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Sample records for sub-20 fs pulses

  1. High-power widely tunable sub-20 fs Gaussian laser pulses for ultrafast nonlinear spectroscopy.

    Science.gov (United States)

    Metzger, Bernd; Steinmann, Andy; Giessen, Harald

    2011-11-21

    We demonstrate the generation of widely tunable sub-20 fs Gaussian-shaped laser pulses using a grating-based 4-f pulse shaper and a liquid crystal spatial light modulator. Our pump source is an Yb:KGW solitary mode-locked oscillator at 44 MHz repetition rate which is coupled into a large mode area microstructured fiber to generate a broad spectrum from below 900 nm to above 1150 nm. These pulses are precompressed by a prism sequence and subsequently sent into the pulse shaper. We use the multiphoton intrapulse interference phase scan (MIIPS) for phase shaping and iterative amplitude optimization to achieve Gaussian-like tunable sub-20 fs pulses with output powers of up to 142 mW as well as nontunable pulses with 310 mW output power as short as 11.5 fs. © 2011 Optical Society of America

  2. Efficient chirped-pulse amplification of sub-20 fs laser pulses

    Energy Technology Data Exchange (ETDEWEB)

    Matsuoka, Shinichi; Yamakawa, Koichi [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    1998-03-01

    We have developed a model for ultrabroadband and ultrashort pulse amplification including the effects of a pulse shaper for regenerative pulse shaping, gain narrowing and gain saturation in the amplifiers. Thin solid etalons are used to control both gain narrowing and gain saturation during amplification. This model has been used to design an optimized Ti:sapphire amplifier system for producing efficiently pulses of < 20-fs duration with approaching peak and average powers of 100 TW and 20 W. (author)

  3. Generation of high-energy sub-20 fs pulses tunable in the 250-310 nm region by frequency doubling of a high-power noncollinear optical parametric amplifier.

    Science.gov (United States)

    Beutler, Marcus; Ghotbi, Masood; Noack, Frank; Brida, Daniele; Manzoni, Cristian; Cerullo, Giulio

    2009-03-15

    We report on the generation of powerful sub-20 fs deep UV pulses with 10 microJ level energy and broadly tunable in the 250-310 nm range. These pulses are produced by frequency doubling a high-power noncollinear optical parametric amplifier and compressed by a pair of MgF2 prisms to an almost transform-limited duration. Our results provide a power scaling by an order of magnitude with respect to previous works.

  4. Frequency-doubled DBR-tapered diode laser for direct pumping of Ti:sapphire lasers generating sub-20 fs pulses.

    Science.gov (United States)

    Müller, André; Jensen, Ole Bjarlin; Unterhuber, Angelika; Le, Tuan; Stingl, Andreas; Hasler, Karl-Heinz; Sumpf, Bernd; Erbert, Götz; Andersen, Peter E; Petersen, Paul Michael

    2011-06-20

    For the first time a single-pass frequency doubled DBR-tapered diode laser suitable for pumping Ti:sapphire lasers generating ultrashort pulses is demonstrated. The maximum output powers achieved when pumping the Ti:sapphire laser are 110 mW (CW) and 82 mW (mode-locked) respectively at 1.2 W of pump power. This corresponds to a reduction in optical conversion efficiencies to 75% of the values achieved with a commercial diode pumped solid-state laser. However, the superior electro-optical efficiency of the diode laser improves the overall efficiency of the Ti:sapphire laser by a factor > 2. The optical spectrum emitted by the Ti:sapphire laser when pumped with our diode laser shows a spectral width of 112 nm (FWHM). Based on autocorrelation measurements, pulse widths of less than 20 fs can therefore be expected.

  5. Frequency-doubled DBR-tapered diode laser for direct pumping of Ti:sapphire lasers generating sub-20 fs pulses

    DEFF Research Database (Denmark)

    Müller, André; Jensen, Ole Bjarlin; Unterhuber, Angelika

    2011-01-01

    For the first time a single-pass frequency doubled DBR-tapered diode laser suitable for pumping Ti:sapphire lasers generating ultrashort pulses is demonstrated. The maximum output powers achieved when pumping the Ti:sapphire laser are 110 mW (CW) and 82 mW (mode-locked) respectively at 1.2 W of p....... The optical spectrum emitted by the Ti:sapphire laser when pumped with our diode laser shows a spectral width of 112 nm (FWHM). Based on autocorrelation measurements, pulse widths of less than 20 fs can therefore be expected.......For the first time a single-pass frequency doubled DBR-tapered diode laser suitable for pumping Ti:sapphire lasers generating ultrashort pulses is demonstrated. The maximum output powers achieved when pumping the Ti:sapphire laser are 110 mW (CW) and 82 mW (mode-locked) respectively at 1.2 W...... of pump power. This corresponds to a reduction in optical conversion efficiencies to 75% of the values achieved with a commercial diode pumped solid-state laser. However, the superior electro-optical efficiency of the diode laser improves the overall efficiency of the Ti:sapphire laser by a factor > 2...

  6. Two-dimensional Fourier transform spectroscopy in the ultraviolet with sub-20 fs pump pulses and 250-720 nm supercontinuum probe

    Science.gov (United States)

    Krebs, N.; Pugliesi, I.; Hauer, J.; Riedle, E.

    2013-08-01

    Experimental realizations of two-dimensional (2D) electronic spectroscopy in the ultraviolet (UV) must so far contend with a limited bandwidth in both the excitation and particularly the probe frequency. The pump bandwidth is at best 1500 cm-1 (full width at half maximum) at a fixed wavelength of 267 nm or 400 cm-1 for tunable pulses. The use of a replica of the pump pulse as a probe limits the observation of photochemical processes to the excitation region and makes the disentanglement of overlapping signal contributions difficult. We show that 2D Fourier transform spectroscopy can be conducted in a shaper-assisted collinear setup comprising fully tunable UV pulse pairs and supercontinuum probe spanning 250-720 nm. The pump pulses are broadened up to a useable spectral coverage of 2000 cm-1 (25 nm at 316 nm) by self-phase modulation in bulk CaF2 and compressed to 18 fs. By referencing the white light probe and eliminating pump stray light contributions, high signal-to-noise ratios even for weak probe intensities are achieved. Data acquisition times as short as 4 min for a selected population time allow the rapid recording of 2D spectra for photolabile biological samples even with the employed 1 kHz laser system. The potential of the setup is demonstrated on two representative molecules: pyrene and 2,2-diphenyl-5,6-benzo(2H)chromene. Well-resolved cross-peaks are observed and the excitation energy dependence of the relaxation processes is revealed.

  7. Ultrafast optical responses of {beta}-carotene and lycopene probed by sub-20-fs time-resolved coherent spectroscopy

    Energy Technology Data Exchange (ETDEWEB)

    Fujiwara, M.; Sugisaki, M. [CREST-JST and Department of Physics, Osaka City University, Osaka 558-8585 (Japan); Gall, A.; Robert, B. [CEA, Institut de Biologie et Technologies de Saclay, and CNRS, Gif-sur-Yvette F-91191 (France); Cogdell, R.J. [IBLS, Glasgow Biomedical Research Centre, University of Glasgow, Glasgow G12 8QQ, Scotland (United Kingdom); Hashimoto, H., E-mail: hassy@sci.osaka-cu.ac.j [CREST-JST and Department of Physics, Osaka City University, Osaka 558-8585 (Japan)

    2009-12-15

    We investigate how structural distortions in carotenoid cause decoherences of its high-frequency vibrational modes by applying the sub-20-fs time-resolved transient grating spectroscopy to {beta}-carotene and lycopene. The results indicate that the C=C central stretching mode shows significant loss of coherence under the effects of the steric hindrance between {beta}-ionone ring and polyene backbone, whereas the other high-frequency modes do not show such dependency on the structural distortions.

  8. Photosensitivity of pulsed laser deposited Ge{sub 20}As{sub 20}Se{sub 60} and Ge{sub 10}As{sub 30}Se{sub 60} amorphous thin films

    Energy Technology Data Exchange (ETDEWEB)

    Hawlová, P.; Olivier, M.; Verger, F. [Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice (Czech Republic); Nazabal, V. [Chemical Sciences Institute of Rennes (ISCR), Glasses and Ceramics Team, UMR-CNRS 6226, University of Rennes 1, 35042 Rennes Cedex (France); Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice (Czech Republic); Němec, P., E-mail: petr.nemec@upce.cz [Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice (Czech Republic)

    2013-10-15

    Graphical abstract: - Highlights: • Amorphous Ge{sub 20}As{sub 20}Se{sub 60}/Ge{sub 10}As{sub 30}Se{sub 60} films are fabricated by pulsed laser deposition. • Photosensitivity of the layers is studied by employing spectroscopic ellipsometry. • As-deposited/relaxed thin films were irradiated by 593, 635, and 660 nm lasers. • Ge{sub 20}As{sub 20}Se{sub 60} layers present almost zero photorefraction in relaxed state. - Abstract: Amorphous Ge{sub 20}As{sub 20}Se{sub 60} and Ge{sub 10}As{sub 30}Se{sub 60} thin films are fabricated by pulsed laser deposition. Prepared films are characterized in terms of their morphology, chemical composition, and optical properties. Special attention is given to the photosensitivity of the layers, which was studied by spectroscopic ellipsometry with as-deposited, annealed and exposed films by three different laser sources (593, 635, and 660 nm). The results show better photostability for Ge{sub 20}As{sub 20}Se{sub 60} thin films, where photoinduced change of optical band gap was found to be equal or less than 0.04 eV and these layers present almost zero photorefraction.

  9. Sub-10 fs deep-ultraviolet pulses generated by chirped-pulse four-wave mixing.

    Science.gov (United States)

    Kida, Yuichiro; Liu, Jun; Teramoto, Takahiro; Kobayashi, Takayoshi

    2010-06-01

    We propose and demonstrate experimentally a novel way of generating sub-10fs deep-UV pulses. The technique is based on chirped-pulse four-wave mixing induced by a broadband near-IR (NIR) pulse and a near-UV pulse. The broadband IR pulse is prepared by preliminarily broadening the spectral width of an NIR pulse by self-phase modulation. The positively chirped broadband IR pulse is suitable for generating a negatively chirped deep-UV pulse, which can be compressed by normal group-velocity dispersion in a transparent medium. Self-compression of the generated deep-UV pulse in air has been demonstrated to produce sub-10fs deep-UV pulses with excellent temporal and spectral profiles for ultrafast spectroscopy in the deep UV.

  10. Note: 15-fs, 15-μJ green pulses from two-stage temporal compressor of ytterbium laser pulses.

    Science.gov (United States)

    Konyashchenko, A V; Kostryukov, P V; Losev, L L; Tenyakov, S Yu

    2012-10-01

    15-fs, 15-μJ light pulses at the central wavelength of 515 nm were generated by two-stage nonlinear compression of 300-fs, 150-μJ ytterbium laser pulses. The compression was based on the pulse spectrum broadening by self-phase modulation in gas filled capillary and second harmonic generation in crystal.

  11. Nonlinear side effects of fs pulses inside corneal tissue during photodisruption

    Science.gov (United States)

    Heisterkamp, A.; Ripken, T.; Mamom, T.; Drommer, W.; Welling, H.; Ertmer, W.; Lubatschowski, H.

    In order to evaluate the potential for refractive surgery, fs laser pulses of 150-fs pulse duration were used to process corneal tissue of dead and living animal eyes. By focusing the laser radiation down to spot sizes of several microns, very precise cuts could be achieved inside the treated cornea, accompanied with minimum collateral damage to the tissue by thermal or mechanical effects. During histo-pathological analysis by light and transmission electron microscopy considerable side effects of fs photodisruption were found. Due to the high intensities at the focal region several nonlinear effects occurred. Self-focusing, photodissociation, UV-light production were observed, leading to streak formation inside the cornea.

  12. High power sub-200fs pulse generation from a colliding pulse modelocked VECSEL

    Science.gov (United States)

    Laurain, Alexandre; Marah, Declan; Rockmore, Robert; McInerney, John G.; Hader, Jorg; Ruiz Perez, Antje; Koch, Stephan W.; Stolz, Wolfgang; Moloney, Jerome V.

    2017-02-01

    We present a passive and robust mode-locking scheme for a Vertical External Cavity Surface Emitting Laser (VECSEL).We placed the semiconductor gain medium and the semiconductor saturable absorber mirror (SESAM) strategically in a ring cavity to provide a stable colliding pulse operation. With this cavity geometry, the two counter propagating pulses synchronize on the SESAM to saturate the absorber together. This minimizes the energy lost and creates a transient carrier grating due to the interference of the two beams. The interaction of the two counter-propagating pulses in the SESAM is shown to extend the range of the modelocking regime and to enable higher output power when compared to the conventional VECSEL cavity geometry. In this configuration, we demonstrate a pulse duration of 195fs with an average power of 225mW per output beam at a repetition rate of 2.2GHz, giving a peak power of 460W per beam. The remarkable robustness of the modelocking regime is discussed and a rigorous pulse characterization is presented.

  13. Terawatt Post compression of high energy fs pulses using ionization: A way to overcome the conventional limitation in energy of few optical cycle pulses

    Directory of Open Access Journals (Sweden)

    Descamps D.

    2013-03-01

    Full Text Available By using optical-field-ionization of helium we postcompress 50 fs pulses to 8 fs with a pulse energy of 8,7 mJ. Hence few cycle pulses were obtained with TW peak power and a good shot-to-shot stability.

  14. Sub-50 fs pulses around 2070 nm from a synchronously-pumped, degenerate OPO.

    Science.gov (United States)

    Rudy, Charles W; Marandi, Alireza; Ingold, Kirk A; Wolf, Stephen J; Vodopyanov, Konstantin L; Byer, Robert L; Yang, Lihmei; Wan, Peng; Liu, Jian

    2012-12-03

    We report generation of 48 fs pulses at a center wavelength of 2070 nm using a degenerate optical parametric oscillator (OPO) synchronously-pumped with a commercially available 36-MHz, femtosecond, mode-locked, Yb-doped fiber laser. The spectral bandwidth of the output is ~137 nm, corresponding to a theoretical, transform-limited pulse width of 33 fs. The threshold of the OPO is less than 10 mW of average pump power. By tuning the cavity length, the output spectrum covers a spectral width of more than 400 nm, limited only by the bandwidth of the cavity mirrors.

  15. Dispersion management for a sub-10-fs, 10 TW optical parametric chirped-pulse amplifier.

    Science.gov (United States)

    Tavella, Franz; Nomura, Yutaka; Veisz, Laszlo; Pervak, Vladimir; Marcinkevicius, Andrius; Krausz, Ferenc

    2007-08-01

    We report the amplification of three-cycle, 8.5 fs optical pulses in a near-infrared noncollinear optical parametric chirped-pulse amplifier (OPCPA) up to energies of 80 mJ. Improved dispersion management in the amplifier by means of a combination of reflection grisms and a chirped-mirror stretcher allowed us to recompress the amplified pulses to within 6% of their Fourier limit. The novel ultrabroad, ultraprecise dispersion control technology presented in this work opens the way to scaling multiterawatt technology to even shorter pulses by optimizing the OPCPA bandwidth.

  16. Nonsequential double ionization of D2 molecules with intense 20-fs pulses

    DEFF Research Database (Denmark)

    Sakai, H.; Larsen, J.J.; Wendt-Larsen, I.

    2003-01-01

    The kinetic-energy distribution of D+ fragments obtained from the ionization of D2 molecules with intense 20-fs pulses includes a high-energy component extending up to ˜10 eV. These fragments are only present for linearly, or slightly elliptically, polarized light. Both the maximum kinetic...

  17. Nonlinear Diffuse fs-Pulse Reflectometry of Harmonic Upconversion Nanoparticles

    Directory of Open Access Journals (Sweden)

    Christian Kijatkin

    2017-02-01

    Full Text Available Nonlinear diffuse femtosecond-pulse reflectometry is introduced as a powerful experimental tool for the unambiguous characterization of polar and non-polar point symmetry groups of harmonic upconversion nanoparticles. Using intense ultrashort 40 femtosecond laser pulses and an appropriate figure of merit (FOM, second and third harmonic emission serve for the structural characterization of polar Yb-doped lithium niobate and non-polar titanium dioxide nanoparticles. The tool is capable of differentiating these two samples by FOM values that differ by up to 13 orders of magnitude. The general applicability to harmonic upconversion nanoparticles over a broad range of intensities and wavelength spectrum, is discussed.

  18. Ultrafast spectroscopy of coherent phonon in carbon nanotubes using sub-5-fs visible pulses

    Energy Technology Data Exchange (ETDEWEB)

    Kobayashi, Takayoshi [Advanced Ultrafast Laser Research Center, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585 (Japan); JST, CREST, 5 Sanbancho, Chiyoda-ku, Tokyo 102-0075 Japan (Japan); Department of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan (China); Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan kobayashi@ils.uec.ac.jp (Japan)

    2016-02-01

    In the last two decades, nano materials are attracting many scientists’ interest for both basic and application viewpoints. In order to understand the properties of nano systems it is needed to understand the dynamic properties which control the specific properties of the systems. All the primary processes in nano systems are taking place in femtosecond regime. Our group has been able to stably generate visible to near-infrared sub-5-fs laser pulses using a noncollinear optical parametric amplifier (NOPA) by the combination of various novel techniques including non-collinear optical parametric amplifier, pulse compression by a prism pair and grating pair. We apply the sub-5-fs pulses to study real-time coherent phonon in a one-dimensional system of carbon nanotubes. We determine exciton-phonon coupling mechanisms by observing the breathing mode in semiconducting carbon nanotubes and show the effect of electronic transition affected by the vibrational mode.

  19. 17-fs pulses from a self-mode-locked Ti:sapphire laser.

    Science.gov (United States)

    Huang, C P; Asaki, M T; Backus, S; Murnane, M M; Kapteyn, H C; Nathel, H

    1992-09-15

    We have generated sub-17-fs-duration pulses directly from a self-mode-locked Ti:sapphire laser. These pulses are near transform limited, with a wavelength centered at 817 nm, a pulse repetition rate of 80 MHz, and an average power of 500 mW. By minimizing the amount of material inside the laser cavity and choosing the correct glass for the intracavity prism pair, third-order dispersion in the laser can be significantly reduced compared with that in previous designs. Extracavity compensation for group-velocity dispersion in the output coupler and autocorrelator optics is necessary to measure this pulse width. To our knowledge this laser generates pulses substantially shorter than any other laser to date.

  20. Pulse shape measurements using single shot-frequency resolved optical gating for high energy (80 J) short pulse (600 fs) laser.

    Science.gov (United States)

    Palaniyappan, S; Shah, R C; Johnson, R; Shimada, T; Gautier, D C; Letzring, S; Jung, D; Hörlein, R; Offermann, D T; Fernández, J C; Hegelich, B M

    2010-10-01

    Relevant to laser based electron/ion accelerations, a single shot second harmonic generation frequency resolved optical gating (FROG) system has been developed to characterize laser pulses (80 J, ∼600 fs) incident on and transmitted through nanofoil targets, employing relay imaging, spatial filter, and partially coated glass substrates to reduce spatial nonuniformity and B-integral. The device can be completely aligned without using a pulsed laser source. Variations of incident pulse shape were measured from durations of 613 fs (nearly symmetric shape) to 571 fs (asymmetric shape with pre- or postpulse). The FROG measurements are consistent with independent spectral and autocorrelation measurements.

  1. Refractive index-modified structures in glass written by 266nm fs laser pulses.

    Science.gov (United States)

    Saliminia, Ali; Bérubé, Jean-Philippe; Vallée, Réal

    2012-12-03

    We demonstrate the inscription of embedded waveguides, anti-waveguides and Bragg gratings by use of intense femtosecond (fs) UV laser pulses at 266nm in pure fused silica, and for the first time, in bulk fused quartz and ZBLAN glasses. The magnitude of induced index changes, depends, besides pulse energy and translation speed, largely on writing depth and varies from ~10(-4) for smooth modifications to ~10(-3) for damaged structures. The obtained results are promising as they present the feasibility of fabrication of short (lasers operating at short wavelengths.

  2. Dynamic fiber delivery of 3 W 160 fs pulses with photonic crystal hollow core fiber patchcord.

    Science.gov (United States)

    Resan, Bojan; Auchli, Raffael; Villamaina, Vesna; Holtz, Ronald

    2017-10-02

    We report output characteristics of a connectorized hollow core photonics crystal fiber when it is subjected to coiling down to a 50 mm radius, bending, and torsion. We achieved coupling efficiency up to 73% with an output average power of 2 W and 24 nJ pulse energy. With optimized coupling, depolarization was as low as 7%. Coiling and bending of the photonic crystal patchcord introduces little distortion; torsion, however, changes the polarization drastically. To our knowledge, this is the first report on dynamic fiber delivery of fs pulses.

  3. The Nature of Emission from Optical Breakdown Induced by Pulses of fs and ns Duration

    Energy Technology Data Exchange (ETDEWEB)

    Carr, C W; Feit, M D; Rubenchik, A M; Demange, P; Kucheyev, S; Shirk, M D; Radousky, H B; Demos, S G

    2004-11-09

    Spectral emission from optical breakdown in the bulk of a transparent dielectric contains information about the nature of the breakdown medium. We have made time resolved measurements of the breakdown induced emission caused by nanosecond and femtosecond infrared laser pulses. We previously demonstrated that the emission due to ns pulses is blackbody in nature allowing determination of the fireball temperature and pressure during and after the damage event. The emission due to femtosecond pulse breakdown is not blackbody in nature; two different spectral distributions being noted. In one case, the peak spectral distribution occurs at the second harmonic of the incident radiation, in the other the distribution is broader and flatter and presumably due to continuum generation. The differences between ns and fs breakdown emission can be explained by the differing breakdown region geometries for the two pulse durations. The possibility to use spectral emission as a diagnostic of the emission region morphology will be discussed.

  4. Generation of sub-100-fs pulses from a CW mode-locked chromium-doped forsterite laser

    Science.gov (United States)

    Seas, A.; Petricevic, V.; Alfano, R. R.

    1992-01-01

    Generation of femtosecond pulses from a continuous-wave mode-locked chromium-doped forsterite laser is reported. The forsterite laser was actively mode locked by using an acoustooptic modulator operating at 78 MHz with two Brewster high-dispersion glass prisms for intracavity chirp compensation. Transform-limited sub-100-fs pulses were routinely generated in the TEM(00) mode with 85 mW of continuous power (with 1 percent output coupler), tunable over 1230-1280 nm. The shortest pulses measured had a 60-fs pulse width.

  5. Interaction Mechanisms of Cavitation Bubbles Induced by Spatially and Temporally Separated fs-Laser Pulses

    Science.gov (United States)

    Tinne, Nadine; Kaune, Brigitte; Krüger, Alexander; Ripken, Tammo

    2014-01-01

    The emerging use of femtosecond lasers with high repetition rates in the MHz regime together with limited scan speed implies possible mutual optical and dynamical interaction effects of the individual cutting spots. In order to get more insight into the dynamics a time-resolved photographic analysis of the interaction of cavitation bubbles is presented. Particularly, we investigated the influence of fs-laser pulses and their resulting bubble dynamics with various spatial as well as temporal separations. Different time courses of characteristic interaction effects between the cavitation bubbles were observed depending on pulse energy and spatio-temporal pulse separation. These ranged from merely no interaction to the phenomena of strong water jet formation. Afterwards, the mechanisms are discussed regarding their impact on the medical application of effective tissue cutting lateral to the laser beam direction with best possible axial precision: the mechanical forces of photodisruption as well as the occurring water jet should have low axial extend and a preferably lateral priority. Furthermore, the overall efficiency of energy conversion into controlled mechanical impact should be maximized compared to the transmitted pulse energy and unwanted long range mechanical side effects, e.g. shock waves, axial jet components. In conclusion, these experimental results are of great importance for the prospective optimization of the ophthalmic surgical process with high-repetition rate fs-lasers. PMID:25502697

  6. Interaction mechanisms of cavitation bubbles induced by spatially and temporally separated fs-laser pulses.

    Directory of Open Access Journals (Sweden)

    Nadine Tinne

    Full Text Available The emerging use of femtosecond lasers with high repetition rates in the MHz regime together with limited scan speed implies possible mutual optical and dynamical interaction effects of the individual cutting spots. In order to get more insight into the dynamics a time-resolved photographic analysis of the interaction of cavitation bubbles is presented. Particularly, we investigated the influence of fs-laser pulses and their resulting bubble dynamics with various spatial as well as temporal separations. Different time courses of characteristic interaction effects between the cavitation bubbles were observed depending on pulse energy and spatio-temporal pulse separation. These ranged from merely no interaction to the phenomena of strong water jet formation. Afterwards, the mechanisms are discussed regarding their impact on the medical application of effective tissue cutting lateral to the laser beam direction with best possible axial precision: the mechanical forces of photodisruption as well as the occurring water jet should have low axial extend and a preferably lateral priority. Furthermore, the overall efficiency of energy conversion into controlled mechanical impact should be maximized compared to the transmitted pulse energy and unwanted long range mechanical side effects, e.g. shock waves, axial jet components. In conclusion, these experimental results are of great importance for the prospective optimization of the ophthalmic surgical process with high-repetition rate fs-lasers.

  7. Interaction mechanisms of cavitation bubbles induced by spatially and temporally separated fs-laser pulses.

    Science.gov (United States)

    Tinne, Nadine; Kaune, Brigitte; Krüger, Alexander; Ripken, Tammo

    2014-01-01

    The emerging use of femtosecond lasers with high repetition rates in the MHz regime together with limited scan speed implies possible mutual optical and dynamical interaction effects of the individual cutting spots. In order to get more insight into the dynamics a time-resolved photographic analysis of the interaction of cavitation bubbles is presented. Particularly, we investigated the influence of fs-laser pulses and their resulting bubble dynamics with various spatial as well as temporal separations. Different time courses of characteristic interaction effects between the cavitation bubbles were observed depending on pulse energy and spatio-temporal pulse separation. These ranged from merely no interaction to the phenomena of strong water jet formation. Afterwards, the mechanisms are discussed regarding their impact on the medical application of effective tissue cutting lateral to the laser beam direction with best possible axial precision: the mechanical forces of photodisruption as well as the occurring water jet should have low axial extend and a preferably lateral priority. Furthermore, the overall efficiency of energy conversion into controlled mechanical impact should be maximized compared to the transmitted pulse energy and unwanted long range mechanical side effects, e.g. shock waves, axial jet components. In conclusion, these experimental results are of great importance for the prospective optimization of the ophthalmic surgical process with high-repetition rate fs-lasers.

  8. Fabrication of waveguides in Gorilla Glass with fs-pulses and its nonlinear features (Conference Presentation)

    Science.gov (United States)

    Almeida, Gustavo F. B.; Almeida, Juliana M. P.; Martins, Renato J.; De Boni, Leonardo; Arnold, Craig B.; Mendonça, Cleber R.

    2017-03-01

    Ultrafast waveguide fabrication has been an active research area since its demonstration, leading to numerous applications. Recently reported high quality waveguide in Gorilla Glass has promoted it as a good candidate for optical devices. In this study, 120-fs laser pulses centered at 520, 650 and 775 nm at a repetition rate of 1 kHz were applied to investigate the influence of the wavelength on micromachining. Grooves ablated onto Gorilla Glass surface with different pulse energies and scanning speeds presented similar features and threshold pulse energy, regardless the excitation wavelength. Fifteen millimeter long waveguides were produced 100 μm below sample surface with pulse energy varying from 250 nJ up to 5 μJ (scanning speed of 200 μm/s). Waveguides longitudinal and transversal profiles were analyzed via optical microscopy and its guiding properties characterized in an objective-lens based coupling system at 633 and 775 nm. Guide modes intensity distribution show that for waveguides fabricated with higher pulse energy light is guided further from the core, while for lower fabrication energy light is guided closer to the center in a more fundamental mode. Considering that light traveling through 15 mm of material in confined mode, we coupled 775 nm fs-pulses into fabricated waveguides. By monitoring the spectrum of the guided light as input pulse energy increased, spectral broadening assigned to self-phase modulation effects was observed followed by white-light generation starting at 450 nm. In conclusion, we found that micromachining on Gorilla Glass is wavelength independent and inscribed waveguides present desirable nonlinear features.

  9. 1 μJ, sub-500 fs chirped pulse amplification in a Tm-doped fiber system.

    Science.gov (United States)

    Sims, R Andrew; Kadwani, Pankaj; Shah, Alex Sincore Lawrence; Richardson, Martin

    2013-01-15

    We demonstrate a Tm-doped fiber laser system producing ~300 fs pulses with 1 μJ energy, corresponding to peak powers greater than 3 MW. Pulses of 150 fs with 30 nm spectral bandwidth and 3 nJ pulse energy are generated in a Raman-soliton self-frequency shift amplifier, then stretched to ~160 ps using a chirped Bragg grating. The 60 MHz oscillator repetition rate is reduced to 100 kHz using an electro-optic modulator. After a single-mode fiber preamplifier and a large-mode-area fiber power amplifier, pulses were compressed using a folded Treacy grating setup to below 500 fs with up to 1 μJ pulse energy. To the best of our knowledge, this is the highest energy yet demonstrated as well as the first demonstration of peak powers exceeding 1 MW from a Tm:fiber laser system.

  10. High-repetition-rate regenerative thin-disk amplifier with 116 microJ pulse energy and 250 fs pulse duration.

    Science.gov (United States)

    Larionov, Mikhail; Butze, Frank; Nickel, Detlef; Giesen, Adolf

    2007-03-01

    A thin-disk regenerative amplifier based on Yb-doped potassium yttrium tungstate is operated at 40 kHz with an output pulse energy of 116 microJ and a pulse duration of 250 fs. Dispersive stretching of the pulse during amplification instead of an external stretcher is used to avoid high peak intensities. The small amount of the laser active material in the amplifier inherent for the thin-disk laser design and a large beam radius in the Pockels cell reduce nonlinear effects further. Consequently the output pulses can be compressed to 250 fs using a pair of diffraction gratings.

  11. Diode-pumped Kerr-lens mode-locked Yb: GSO laser generating 72 fs pulses

    Science.gov (United States)

    Tian, Wenlong; Wang, Zhaohua; Zhu, Jiangfeng; Zheng, Lihe; Xu, Xiaodong; Xu, Jun; Wei, Zhiyi

    2016-05-01

    The generation of 72 fs hyperbolic secant pulses centered at 1050 nm with 17.8 nm bandwidth from a diode pumped Kerr-lens mode-locked Yb: GSO laser is demonstrated. With the help of a semiconductor saturable absorber mirror, stable mode-locking with an average output power of 85 mW at a repetition rate of 113 MHz is realized. To the best of our knowledge, this is the first demonstration of Kerr-lens mode-locking in Yb: GSO laser.

  12. Generation of 12 fs deep-ultraviolet pulses by four-wave mixing through filamentation in neon gas.

    Science.gov (United States)

    Fuji, Takao; Horio, Takuya; Suzuki, Toshinori

    2007-09-01

    Generation of deep-ultraviolet femtosecond pulses by four-wave mixing through filamentation in neon gas was demonstrated. Fundamental (omega) and second-harmonic (2omega) pulses of 25 fs Ti:sapphire amplifier output were focused into neon gas, and 20 microJ pulses with the center wavelength of 260 nm were produced by a four-wave mixing process, 2omega+2omega-omega?3omega through an ~15 cm filament. Additionally, pulses with an energy of 2 microJ at 200 nm were generated, probably by a cascaded process, 3omega+2omega-omega?4omega. The 260 nm pulses were compressed by a grating-based compressor and characterized by a dispersion-free transient grating frequency-resolved optical gating. The estimated pulse width was 12 fs.

  13. Femtosecond time-resolved impulsive stimulated Raman spectroscopy using sub-7-fs pulses: Apparatus and applications

    Energy Technology Data Exchange (ETDEWEB)

    Kuramochi, Hikaru [Molecular Spectroscopy Laboratory, RIKEN, 2-1 Hirosawa, Wako 351-0198 (Japan); Takeuchi, Satoshi; Tahara, Tahei, E-mail: tahei@riken.jp [Molecular Spectroscopy Laboratory, RIKEN, 2-1 Hirosawa, Wako 351-0198 (Japan); Ultrafast Spectroscopy Research Team, RIKEN Center for Advanced Photonics (RAP), 2-1 Hirosawa, Wako 351-0198 (Japan)

    2016-04-15

    We describe details of the setup for time-resolved impulsive stimulated Raman spectroscopy (TR-ISRS). In this method, snapshot molecular vibrational spectra of the photoreaction transients are captured via time-domain Raman probing using ultrashort pulses. Our instrument features transform-limited sub-7-fs pulses to impulsively excite and probe coherent nuclear wavepacket motions, allowing us to observe vibrational fingerprints of transient species from the terahertz to 3000-cm{sup −1} region with high sensitivity. Key optical components for the best spectroscopic performance are discussed. The TR-ISRS measurements for the excited states of diphenylacetylene in cyclohexane are demonstrated, highlighting the capability of our setup to track femtosecond dynamics of all the Raman-active fundamental molecular vibrations.

  14. Diode-pumped Kerr-lens mode-locked Yb:LYSO laser with 61fs pulse duration.

    Science.gov (United States)

    Tian, Wenlong; Wang, Zhaohua; Wei, Long; Peng, Yingnan; Zhang, Jinwei; Zhu, Zheng; Zhu, Jiangfeng; Han, Hainian; Jia, Yulei; Zheng, Lihe; Xu, Jun; Wei, Zhiyi

    2014-08-11

    A stable diode pumped Kerr-lens mode-locked (KLM) Yb:LuYSiO5 (Yb:LYSO) laser of generating 61 fs pulses at a central wavelength of 1055.4 nm is experimentally demonstrated. This is, to the best of our knowledge, the first demonstration of femtosecond KLM operation in Yb:LYSO laser, and it is believed that 61 fs is the shortest pulse duration ever produced from an Yb-doped orthosilicate laser. The average output power of the mode-locked laser is 40 mW and the repetition rate is 113 MHz.

  15. Ultrafast Gigantic Photo-Response in Charge-Ordered Organic Salt (EDO-TTF)2PF6 on 10-fs time scales

    Science.gov (United States)

    Itatani, J.; Rini, M.; Cavalleri, A.; Onda, K.; Ishikawa, T.; Ogihara, S.; Koshihara, S.; Shao, X. F.; Nakano, Y.; Yamochi, H.; Saito, G.; Schoenlein, R. W.

    The initial dynamics of photo-induced phase transition in charge-ordered organic salt (EDO-TTF)2PF6 was investigated using 10-fs near-infrared laser pulses. We observed sub-20-fs gigantic photo-responses (|∆R/R|>100%) due to intra-molecular vibration and a clear signature of a structural bottleneck (~50 fs) for the first time.

  16. Spectral broadening of 25 fs laser pulses via self-phase modulation in a neon filled hollow core fibre

    Energy Technology Data Exchange (ETDEWEB)

    Weichert, Stefan

    2017-05-15

    The goal of this work was the realisation of a setup for spectral broadening and subsequent compression of 25 fs laser pulses provided by a commercial Ti:Sapphire based CPA laser system by means of the hollow core fibre chirped mirror compressor technique. For the spectral broadening a vessel containing the hollow waveguide filled with a noble gas serving as the nonlinear medium was set up and an alignment procedure was developed. Neon was chosen as the nonlinear medium for the self-phase modulation of the pulses. With this setup spectral broadening, sufficient for supporting sub 5 fs pulses, was observed. The spectra at different input energies and neon gas pressures were measured and the stability of these and their respective Fourier transform-limited pulses determined in order to find an operating point. For the compression of the self-phase modulated pulses a chirped mirror compressor was designed and set up, but not tested yet. The layout of a single-shot intensity autocorrelator capable of estimating the pulse duration of sub 10 fs pulses was given.

  17. Towards sub-100 fs multi-GW pulses directly emitted from a Thulium-doped fiber CPA system

    Science.gov (United States)

    Gaida, C.; Gebhardt, M.; Stutzki, F.; Jauregui, C.; Limpert, J.; Tünnermann, A.

    2017-02-01

    Experimental demonstrations of Tm-doped fiber amplifiers (typically in CW- or narrow-band pulsed operation) span a wavelength range going from about 1700 nm to well beyond 2000 nm. Thus, it should be possible to obtain a bandwidth of more than 100 nm, which would enable sub-100 fs pulse duration in an efficient, linear amplification scheme. In fact, this would allow the emission of pulses with less than 20 optical cycles directly from a Tm-doped fiber system, something that seems to be extremely challenging for other dopants in a fused silica fiber. In this contribution, we summarize the current development of our Thulium-doped fiber CPA system, demonstrate preliminary experiments for further scaling and discuss important design factors for the next steps. The current single-channel laser system presented herein delivers a pulse-peak power of 2 GW and a nearly transform-limited pulse duration of 200 fs in combination with 28.7 W of average power. Special care has been taken to reduce the detrimental impact of water vapor absorption by placing the whole system in a dry atmosphere housing (Tm-doped fiber CPA with sub-100 fs pulse duration, multi-GW pulse peak power and >100 W average power can be expected in the near future.

  18. Extreme ultraviolet emission from dense plasmas generated with sub-10-fs laser pulses

    CERN Document Server

    Osterholz, J; Cerchez, M; Fischer, T; Hemmers, D; Hidding, B; Pipahl, A; Pretzler, G; Rose, S J; Willi, O

    2008-01-01

    The extreme ultraviolet (XUV) emission from dense plasmas generated with sub-10-fs laser pulses with varying peak intensities up to 3*10^16 W/cm^2 is investigated for different target materials. K shell spectra are obtained from low Z targets (carbon and boron nitride). In the spectra a series limit for the hydrogen and helium like resonance lines is observed indicating that the plasma is at high density and pressure ionization has removed the higher levels. In addition, L shell spectra from titanium targets were obtained. Basic features of the K and L shell spectra are reproduced with computer simulations. The calculations include hydrodynamic simulation of the plasma expansion and collisional radiative calculations of the XUV emission.

  19. Generation of 70-fs pulses at 286 μm from a mid-infrared fiber laser

    Science.gov (United States)

    Woodward, R. I.; Hudson, D. D.; Fuerbach, A.; Jackson, S. D.

    2017-12-01

    We propose and demonstrate a simple route to few-optical-cycle pulse generation from a mid-infrared fiber laser through nonlinear compression of pulses from a holmium-doped fiber oscillator using a short length of chalcogenide fiber and a grating pair. Pulses from the oscillator with 265-fs duration at 2.86 {\\mu}m are spectrally broadened through self-phase modulation in step-index As2S3 fiber to 141-nm bandwidth and then re-compressed to 70 fs (7.3 optical cycles). These are the shortest pulses from a mid-infrared fiber system to date, and we note that our system is compact, robust, and uses only commercially available components. The scalability of this approach is also discussed, supported by numerical modeling.

  20. Scanning electron microscopy and ablation rates of hard dental tissue using 350-fs and 1-ns laser pulses

    Science.gov (United States)

    Neev, Joseph; Huynh, Daniel S.; Dan, Claudiu C.; White, Joel M.; Da Silva, Luiz B.; Feit, Michael D.; Matthews, Dennis L.; Perry, Michael D.; Rubenchik, Alexander M.; Stuart, Brent C.

    1996-04-01

    Lasers are currently limited in their ability to remove hard tissue. Furthermore, many laser systems, such as the long pulse infrared lasers used to ablate bone or hard dental tissue, also generate unacceptable heat levels and cause collateral tissue damage. Ultrashort pulse lasers, however, are highly efficient, quiet, and relatively free of charge. With recent developments now allowing operation at high pulse repetition rates, ultrashort pulse systems can yield significant material volume removal which can potentially match or even exceed conventional technology while still maintaining the minimal collateral damage characteristics. In this paper, the interaction characteristics of two pulse regimes with enamel and dentin: 350 fs pulse ablation of hard dental tissues is compared to the interaction with one nanosecond pulses. Ablation rates were characterized and surface morphology, and structure were evaluated using a scanning electron microscope.

  1. 500 MW peak power degenerated optical parametric amplifier delivering 52 fs pulses at 97 kHz repetition rate.

    Science.gov (United States)

    Rothhardt, J; Hädrich, S; Röser, F; Limpert, J; Tünnermann, A

    2008-06-09

    We present a high peak power degenerated parametric amplifier operating at 1030 nm and 97 kHz repetition rate. Pulses of a state-of-the art fiber chirped-pulse amplification (FCPA) system with 840 fs pulse duration and 410 microJ pulse energy are used as pump and seed source for a two stage optical parametric amplifier. Additional spectral broadening of the seed signal in a photonic crystal fiber creates enough bandwidth for ultrashort pulse generation. Subsequent amplification of the broadband seed signal in two 1 mm BBO crystals results in 41 microJ output pulse energy. Compression in a SF 11 prism compressor yields 37 microJ pulses as short as 52 fs. Thus, pulse shortening of more than one order of magnitude is achieved. Further scaling in terms of average power and pulse energy seems possible and will be discussed, since both concepts involved, the fiber laser and the parametric amplifier have the reputation to be immune against thermo-optical effects.

  2. 260 fs and 1 nJ pulse generation from a compact, mode-locked Tm-doped fiber laser.

    Science.gov (United States)

    Sobon, Grzegorz; Sotor, Jaroslaw; Pasternak, Iwona; Krajewska, Aleksandra; Strupinski, Wlodek; Abramski, Krzysztof M

    2015-11-30

    We report on generation of 260 fs-short pulses with energy of 1.1 nJ from a fully fiberized, monolithic Tm-doped fiber laser system. The design comprises a simple, graphene-based ultrafast oscillator and an integrated all-fiber chirped pulse amplifier (CPA). The system generates 110 mW of average power at 100.25 MHz repetition rate and central wavelength of 1968 nm. This is, to our knowledge, the highest pulse energy generated from a fully fiberized sub-300 fs Tm-doped laser, without the necessity of using grating-based dispersion compensation. Such compact, robust and cost-effective system might serve as a seed source for nonlinear frequency conversion or mid-infrared supercontinuum generation.

  3. Small-angle Thomson scattering of ultrafast laser pulses for bright, sub-100-fs x-ray radiation

    Directory of Open Access Journals (Sweden)

    Yuelin Li

    2002-04-01

    Full Text Available We propose a scheme for bright sub-100-fs x-ray radiation generation using small-angle Thomson scattering. Coupling high-brightness electron bunches with high-power ultrafast laser pulses, radiation with photon energies between 8 and 40 keV can be generated with pulse duration comparable to that of the incoming laser pulse and with peak spectral brightness close to that of the third-generation synchrotron light sources of ∼10^{20} photons s^{-1} mm^{-2} mrad^{-2} per 10^{-3} bandwidth. A preliminary dynamic calculation is performed to understand the property of this novel scattering scheme with relativistic laser intensities.

  4. Laser-induced periodic surface structures on fused silica upon cross-polarized two-color double-fs-pulse irradiation

    Energy Technology Data Exchange (ETDEWEB)

    Höhm, S., E-mail: hoehm@mbi-berlin.de.de [Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (MBI), Max-Born-Straße 2A, D-12489 Berlin (Germany); Herzlieb, M.; Rosenfeld, A. [Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (MBI), Max-Born-Straße 2A, D-12489 Berlin (Germany); Krüger, J. [BAM Bundesanstalt für Materialforschung und–prüfung, Unter den Eichen 87, D-12205 Berlin (Germany); Bonse, J., E-mail: joern.bonse@bam.de [BAM Bundesanstalt für Materialforschung und–prüfung, Unter den Eichen 87, D-12205 Berlin (Germany)

    2015-05-01

    Graphical abstract: - Highlights: • LIPSS formation on fused silica is studied upon cross-polarized two-color (400 and 800 nm) double-fs-pulse irradiation. • LIPSS orientation follows the polarization of the first pulse. • LIPSS periods are determined by the wavelength of the first pulse. • LIPSS area is increased for temporally overlapping pulses due to nonlinear absorption. - Abstract: The dynamics of the formation of laser-induced periodic surface structures (LIPSS) on fused silica upon irradiation with linearly polarized fs-laser pulses (50 fs pulse duration) is studied by cross-polarized two-color double-fs-pulse experiments. In order to analyze the relevance of temporally distributed energy deposition in the early stage of LIPSS formation, a Mach-Zehnder interferometer was used for generating multiple double-pulse sequences at two different wavelengths (400 and 800 nm). The inter-pulse delay between the individual cross-polarized pulses of each sequence was systematically varied in the sub-ps range and the resulting LIPSS morphologies were characterized by scanning electron microscopy. It is found that the polarization of the first laser pulse arriving to the surface determines the orientation and the periodicity of the LIPSS. These two-color experiments further confirm the importance of the ultrafast energy deposition to the silica surface for LIPSS formation, particularly by the first laser pulse of each sequence. The second laser pulse subsequently reinforces the previously seeded spatial LIPSS characteristics (period, orientation)

  5. Studies on perovskite film ablation and scribing with ns-, ps- and fs-laser pulses

    Science.gov (United States)

    Bayer, Lukas; Ye, Xinyuan; Lorenz, Pierre; Zimmer, Klaus

    2017-10-01

    Hybrid organic-inorganic perovskites attract much attention due to their exceptional optoelectronic properties, in particular for photovoltaic (PV) applications. The accurate, high-speed and reliable patterning of the PV films is required for perovskite solar modules fabrication. Laser scribing provides these characteristics needed for industrial fabrication processes. In this work, the laser ablation and scribing of perovskite layers (CH3NH3PbI3: MAPbI3) with different laser sources (ns-, ps-, fs-laser pulses with wavelengths of 248 nm to 2.5 µm) were systematically investigated. The perovskite material was irradiated from both the film side and the substrate (rear side) side to study and compare the particular processes. The patterning results of the perovskite film can be classified into (1) regular laser ablation, (2) thin-film delamination lift-off process, and (3) lift-off with thermal modifications. A particular process, the localised lift-off of single grains from the perovskite film, has been observed and is discussed in relation to the thin-film lift-off process. Ablation and ablation-related mechanisms provide good conditions for laser scribing of the perovskite layer required for module interconnection via P2.

  6. Mode-locked sub 200 fs laser pulses from an Er-Yb-Ce ZBLAN waveguide laser

    Science.gov (United States)

    Lancaster, David G.; Khurmi, Champak; Bourbeau-Hebert, Nicolas; Genest, Jerome; Chen, George; Zhang, Wenqi; Afshar, Shahraam; Monro, Tanya M.

    2017-02-01

    Passively mode-locked sub 200 fs pulses are generated from Er-Yb co-doped ZBLAN waveguide laser using a semiconductor saturable absorber mirror repetition rates of up to 533 MHz. At 156 MHz and 1556 nm central wavelength, the chip laser operates with a broad 25 nm bandwidth. The waveguides were written in the Er-Yb co-doped ZBLAN glass by using ultrafast laser inscription.

  7. The influence of laser pulse duration and energy on ICP-MS signal intensity, elemental fractionation, and particle size distribution in NIR fs-LA-ICP-MS.

    Science.gov (United States)

    Diwakar, Prasoon K; Harilal, Sivanandan S; LaHaye, Nicole L; Hassanein, Ahmed; Kulkarni, Pramod

    Laser parameters, typically wavelength, pulse width, irradiance, repetition rate, and pulse energy, are critical parameters which influence the laser ablation process and thereby influence the LA-ICP-MS signal. In recent times, femtosecond laser ablation has gained popularity owing to the reduction in fractionation related issues and improved analytical performance which can provide matrix-independent sampling. The advantage offered by fs-LA is due to shorter pulse duration of the laser as compared to the phonon relaxation time and heat diffusion time. Hence the thermal effects are minimized in fs-LA. Recently, fs-LA-ICP-MS demonstrated improved analytical performance as compared to ns-LA-ICP-MS, but detailed mechanisms and processes are still not clearly understood. Improvement of fs-LA-ICP-MS over ns-LA-ICP-MS elucidates the importance of laser pulse duration and related effects on the ablation process. In this study, we have investigated the influence of laser pulse width (40 fs to 0.3 ns) and energy on LA-ICP-MS signal intensity and repeatability using a brass sample. Experiments were performed in single spot ablation mode as well as rastering ablation mode to monitor the Cu/Zn ratio. The recorded ICP-MS signal was correlated with total particle counts generated during laser ablation as well as particle size distribution. Our results show the importance of pulse width effects in the fs regime that becomes more pronounced when moving from femtosecond to picosecond and nanosecond regimes.

  8. Coulomb explosion of H{sub 2} induced by a sub-10 fs intense laser pulse; Explosion coulombienne de H{sub 2} induite par une impulsion laser intense sub-10 fs

    Energy Technology Data Exchange (ETDEWEB)

    Saugout, S

    2006-12-15

    This work presents an experimental and theoretical study of the interaction of H2 with an intense sub-10 fs-laser pulse. The ejection of the two electrons of the molecule by the laser pulse leads to the fragmentation of the physical sys em in two protons. This process is called Coulomb Explosion. The electronic and nuclear dynamics can be analyzed by measuring the kinetic energy spectra as a function of different laser parameters. This dynamics is also analyzed through a non-perturbative, double active electron theoretical model, based on the resolution of the time dependent Schroedinger equation. In this model, the internuclear distance is treated as a quantum variable. The experimental and theoretical results enlight the translation of the kinetic energy spectra towards a higher energy when the pulse duration decreases. Experimentally, laser pulses from 40 to 10 fs were used and down to 1 fs using theoretical simulations. This study shows that, for laser pulses shorter than 4 fs, the carrier envelope phase becomes a crucial parameter. Furthermore, the molecular dynamics of H2 in intense laser field is sensitive to the peak intensity of the pulse. The experimental and theoretical results show that, as the intensity increases, the kinetic energy spectra are centered around a higher energy. In addition, the presence of two double ionization regimes is theoretically demonstrated for a pulse duration of 4 fs. The H{sub 2} molecule is also sensitive to the temporal shape of the laser pulse. This sensitivity allows for the detection of pre- or post-pulses by measuring the experimental kinetic energy spectra. Finally, the different double ionization processes are studied. The results show that the electron rescattering influences the femtosecond nuclear dynamics. (author)

  9. All-fiber high-power monolithic femtosecond laser at 1.59 µm with 63-fs pulse width

    Science.gov (United States)

    Hekmat, M. J.; Omoomi, M.; Gholami, A.; Yazdabadi, A. Bagheri; Abdollahi, M.; Hamidnejad, E.; Ebrahimi, A.; Normohamadi, H.

    2018-01-01

    In this research, by adopting an alternative novel approach to ultra-short giant pulse generation which basically originated from difficulties with traditional employed methods, an optimized Er/Yb co-doped double-clad fiber amplifier is applied to boost output average power of single-mode output pulses to a high level of 2-W at 1.59-µm central wavelength. Output pulses of approximately 63-fs pulse width at 52-MHz repetition rate are obtained in an all-fiber monolithic laser configuration. The idea of employing parabolic pulse amplification for stretching output pulses together with high-power pulse amplification using Er/Yb co-doped active fibers for compressing and boosting output average power plays crucial role in obtaining desired results. The proposed configuration enjoys massive advantages over previously reported literature which make it well-suited for high-power precision applications such as medical surgery. Detailed dynamics of pulse stretching and compressing in active fibers with different GVD parameters are numerically and experimentally investigated.

  10. High harmonics generation at the interaction of an intense fs laser pulse with an overdense plasma layer

    Science.gov (United States)

    Mihailescu, A.; Stancalie, V.; Pais, V.

    2014-04-01

    Harmonics generated with fs laser pulses are not only among the most intense sources in the wavelength range of a few tens of nanometers but also a far better source than X-ray lasers from the coherence point of view. It is anticipated, that in the near future, the harmonics issued from femtosecond laser-produced plasmas will represent a coherent source much brighter than all other XUV sources apart from the XFEL. These particular aspects, correlated with the fact that high order harmonics produced by reflection of an ultrashort and intense laser pulse on an overdense plasma layer impose virtually no restrictions on the intensity of the laser employed, lead the way to a series of potential applications in plasma diagnostics and nonlinear optics. This work presents a theoretical study on the high harmonics generation mechanism occurring at the reflection of a femtosecond Ti-Sapphire terawatt laser pulse (λ0 = 0.8 μm and pulse durations around 100-150 fs) on an overdense steep Al plasma layer. Insights on how different laser parameters influence this generation mechanism and its efficiency are provided.

  11. Four-wave mixing with femtosecond pulses

    Energy Technology Data Exchange (ETDEWEB)

    Skenderovic, H [Institute of Physics, Bijenicka cesta 46, HR-10001 Zagreb (Croatia)], E-mail: hrvoje@ifs.hr

    2009-07-15

    The recent development of noncollinear optical parametric amplifiers (NOPAs) has equipped many laboratories with widely tunable, spectrally broad ultrashort laser pulses with a duration of 15-30 fs. The present work deals with sub-20 fs pulsed degenerate four wave mixing (DFWM) on high-frequency vibrational levels in all-trans-{beta}-carotene. The observed wavepacket motion on the electronic ground state revealed fast oscillating vibrational modes whose frequencies and time development were measured. The coherent control in an open loop is demonstrated by appropriate phase shaping of the pulses.

  12. Low-loss flake-graphene saturable absorber mirror for laser mode-locking at sub-200-fs pulse duration

    CERN Document Server

    Cunning, B V; Kielpinski, D

    2011-01-01

    Saturable absorbers are a key component for mode-locking femtosecond lasers. Polymer films containing graphene flakes have recently been used in transmission as laser mode-lockers, but suffer from high nonsaturable loss, limiting their application in low-gain lasers. Here we present a saturable absorber mirror based on a film of pure graphene flakes. The device is used to mode lock an erbium-doped fiber laser, generating pulses with state-of-the-art, sub-200-fs duration. The laser characteristic indicate that the film exhibits low nonsaturable loss (13% per pass) and large absorption modulation depth (45% of low-power absorption).

  13. Self-slowdown and -advancement of fs pulses in a quantum-dot semiconductor optical amplifier

    DEFF Research Database (Denmark)

    Poel, Mike van der; Mørk, Jesper; Hvam, Jørn Märcher

    2005-01-01

    We demonstrate changes in the propagation time of 180 femtosecond pulses in a quantum-dot semiconductor optical amplifier as function of pulse input power and bias current. The results interpreted as a result of pulse reshaping by gain saturation but are also analogous to coherent population...... oscillations. Relative pulse delays (i.e. pulse time delay to pulse FWHM ratio) up to 40% and relative advancements up to 15% are observed when the amplifier is biased at zero current and at currents well above transparency, respectively. Under gain conditions, no pulsedistortion is seen while a considerable...... pulse distortion occurs at zero bias....

  14. Fs-pulsed laser deposition of PbTe and PbTe/Ag thermoelectric thin films

    Energy Technology Data Exchange (ETDEWEB)

    Bellucci, A. [CNR-ISM, Monterotondo Stazione, Rome (Italy); Universita di Roma Sapienza, Dipartimento di Fisica, Rome (Italy); Cappelli, E.; Trucchi, D.M. [CNR-ISM, Monterotondo Stazione, Rome (Italy); Orlando, S. [CNR-ISM, U.O.S. Tito Scalo Zona Industriale, Tito Scalo, PZ (Italy); Medici, L. [CNR-IMAA, Tito Scalo, PZ (Italy); Mezzi, A.; Kaciulis, S. [CNR -ISMN, Monterotondo Stazione, Rome (Italy); Polini, R. [Universita di Roma Tor Vergata, Dip. Scienze Tecnologie Chimiche, Rome (Italy)

    2014-10-15

    For the first time, thermoelectric thin films were fabricated by femtosecond pulsed laser deposition (fs-PLD) that represents a challenging technological solution for this application since it provides a correct film stoichiometry compared to the starting target, capability of native nanostructuring and a high deposition rate. In particular, this paper shows a preliminary work on PbTe and PbTe/Ag thin films deposited at different substrate temperatures by fs-PLD from a microcrystalline PbTe target. Structural, morphological and compositional characterizations of the deposited films were performed to demonstrate the formation of films composed by crystalline nanograins (about 35 nm size) and characterized by a correct stoichiometry. A remarkable deposition rate of 1.5 nm/s was evaluated. The electrical conductivity and the Seebeck coefficient (thermopower) were measured as a function of operating temperature to derive the thermoelectric power factor that was found to be less than a factor 2 with respect to the bulk materials. Finally, a discussion about the influence of compositional and structural properties of the deposited films on the related thermoelectric performances was presented. (orig.)

  15. Production of high energy electrons by irradiation of fs-pulse laser on copper film

    Energy Technology Data Exchange (ETDEWEB)

    Oishi, Yuji; Nayuki, Takuya; Fujii, Takashi; Nemoto, Koshichi [Central Research Inst. of Electric Power Industry, Komae, Tokyo (Japan); Kayoiji, Tsutomu [Tokyo Inst. of Technology, Interdisciplinary Graduate School of Science and Engineering, Yokohama, Kanagawa (Japan); Okano, Yasuaki; Hironaka, Yoichiro; Nakamura, Kazutaka G.; Kondo, Ken-ichi [Tokyo Inst. of Technology, Materials and Structures Laboratory, Yokohama, Kanagawa (Japan)

    2002-07-01

    Fast electrons with energy corresponding to the ponderomotive potential were produced by laser irradiation of 43-fs, 2.7 X 10{sup 18} W/cm{sup 2} on a 30 {mu}m thick copper target. The energy spectra of the electrons were directly measured using a magnetic spectrometer with an imaging plate. The typical temperature was 350 keV for irradiation at 15deg incidence angle. The energy spectra of high-energy photons, which were expected to be produced from the electrons, were also calculated. (author)

  16. Regenerative amplification of femtosecond pulses: Design and construction of a sub-100fs, {mu}J laser system

    Energy Technology Data Exchange (ETDEWEB)

    Schumacher, A.B. [Universitaet Karlsruhe (Germany). Institut fuer Angewandte Physik]|[Lawrence Berkeley National Lab., CA (United States)

    1996-10-01

    Femtosecond lasers are a powerful tool for a wealth of applications in physics, chemistry and biology. In most cases, however, their use is fundamentally restricted to a rather narrow spectral range. This thesis deals with the construction and characterization of a femtosecond light source for spectroscopic applications which overcomes that restriction. It is demonstrated how the output of a continuously pumped Ti:sapphire femtosecond oscillator is amplified to the {mu}J level, while the pulse duration remains below 100fs. A combination of continuous pumping, acousto-optic switching and Ti:Al{sub 2}O{sub 3} as a gain medium allows amplification at high repetition rates. By focusing the high energy pulses into a sapphire crystal, a broad-band continuum can be generated, extended in wavelengths over several hundred nanometers. To accomplish amplification of three orders of magnitude while maintaining the pulse length, a regenerative multipass amplifier system was built. The thesis describes theoretical design, realization and characterization of the system. Theoretical calculations and preliminary measurements were carried out and allow a critical evaluation of the final performance.

  17. Regenerative Amplification of Femtosecond Pulses: Design andConstruction of a sub-100fs, muon J Laser System

    Energy Technology Data Exchange (ETDEWEB)

    Schumacher, Andreas B. [Univ. of California, Berkeley, CA (United States)

    1996-10-01

    Femtosecond lasers are a powerful tool for a wealth of applications in physics, chemistry and biology. In most cases, however, their use is fundamentally restricted to a rather narrow spectral range. This thesis deals with the construction and characterization of a femtosecond light source for spectroscopic applications which overcomes that restriction. It is demonstrated how the output of a continuously pumped Ti:sapphire femtosecond oscillator is amplified to the μJ level,while the pulse duration remains below 100 fs. A combination of continuous pumping, acousto-optic switching and Ti:Al2O3 as a gain medium allows amplification at high repetition rates. By focusing the high energy pulses into a sapphire crystal, a broad-band continuum can be generated, extended in wavelengths over several hundred nanometers. To accomplish amplification of three orders of magnitude while maintaining the pulse length, a regenerative multipass amplifier system was built. The thesis describes theoretical design, realization and characterization of the system. Theoretical calculations and preliminary measurements were carried out and allow a critical evaluation of the final performance.

  18. Generation of 70-fs pulses at 2.86  μm from a mid-infrared fiber laser.

    Science.gov (United States)

    Woodward, R I; Hudson, D D; Fuerbach, A; Jackson, S D

    2017-12-01

    We propose and demonstrate a simple route to few-optical-cycle pulse generation from a mid-infrared fiber laser through nonlinear compression of pulses from a holmium-doped fiber oscillator using a short length of chalcogenide fiber and a grating pair. Pulses from the oscillator with 265-fs duration at 2.86 μm are spectrally broadened through self-phase modulation in step-index As 2 S 3 fiber to 141-nm bandwidth and then re-compressed to 70 fs (7.3 optical cycles). These are the shortest pulses from a mid-infrared fiber system to date, and we note that our system is compact, robust, and uses only commercially available components. The scalability of this approach is also discussed, supported by numerical modeling.

  19. Controllable nonlocal behaviour by cascaded second-harmonic generation of fs pulses

    DEFF Research Database (Denmark)

    Bache, Morten; Bang, Ole; Krolikowski, Wieslaw

    2008-01-01

    Second-harmonic generation (SHG) of ultra-short pulses can act as a prototypical nonlocal nonlinear model, since the strength and nature of the temporal nonlocality can be controlled through the phase-mismatch parameter. The presence of a group-velocity mismatch namely implies that when the phase...... compression to few-cycle pulses in the cascaded quadratic soliton compressor, the spectral content of the full coupled SHG model is predicted by the nonlocal model even when few-cycle pulses are interacting....

  20. Autocorrelation measurement of 6-fs pulses based on the two-photon-induced photocurrent in a GaAsP photodiode

    NARCIS (Netherlands)

    Ranka, J.K.; Gaeta, A.L.; Baltuska, A.; Pshenichnikov, M.S.; Wiersma, D.A.

    1997-01-01

    We experimentally characterize the two-photon response of a GaAsP photodiode by use of a femtosecond Ti:sapphire laser tuned below the diode bandgap. The photodiode is shown to be highly suitable for real-time second-order autocorrelation measurements of pulses as short as 6 fs in duration and with

  1. Multiple Ionization of Atoms by 25 and 7 fs Laser Pulses

    Science.gov (United States)

    Rudenko, A.; Feuerstein, B.; Zrost, K.; de Jesus, V. L. B.; Schröter, C. D.; Moshammer, R.; Ullrich, J.

    Double, triple and fourfold ionization of rare gas atoms has been studied using a "reaction microscope". We show that ionization dynamics drastically depends on atomic species and present the first data obtained with few-cycle pulses.

  2. 140-fs duration and 60-W peak power blue-violet optical pulses generated by a dispersion-compensated GaInN mode-locked semiconductor laser diode using a nonlinear pulse compressor.

    Science.gov (United States)

    Kono, Shunsuke; Watanabe, Hideki; Koda, Rintaro; Fuutagawa, Noriyuki; Narui, Hironobu

    2015-12-14

    Blue-violet optical pulses of 140-fs duration and 60-W peak power were obtained from a dispersion-compensated GaInN mode-locked semiconductor laser diode using a nonlinear pulse compression technique. Wavelength-dependent group velocity dispersion expressed by third-order phase dispersion was applied to the optical pulses using a pulse compressor with a spatial light modulator. The obtained optical pulses had the shortest duration ever obtained for a mode-locked semiconductor laser diode using edge-emitting type devices.

  3. Fabrication of Super Hydrophobic Surfaces by fs Laser Pulses : How to Produce Self-Cleaning Surfaces

    NARCIS (Netherlands)

    Groenendijk, M.N.W.

    2008-01-01

    The chair of Applied Laser Technology of the University of Twente, The Netherlands, is performing research into applications of ultrashort pulsed lasers for micromachining. In a recent project, PhD student Max Groenendijk developed a method for the production of super water repellant surfaces by

  4. 200 TW 45 fs laser based on optical parametric chirped pulse amplification.

    Science.gov (United States)

    Lozhkarev, V V; Freidman, G I; Ginzburg, V N; Katin, E V; Khazanov, E A; Kirsanov, A V; Luchinin, G A; Mal'shakov, A N; Martyanov, M A; Palashov, O V; Poteomkin, A K; Sergeev, A M; Shaykin, A A; Yakovlev, I V; Garanin, S G; Sukharev, S A; Rukavishnikov, N N; Charukhchev, A V; Gerke, R R; Yashin, V E

    2006-01-09

    200 TW peak power has been achieved experimentally using a Cr:forsterite master oscillator at 1250 nm, a stretcher, three optical parametrical amplifiers based on KD*P (DKDP) crystals providing 14.5 J energy in the chirped pulse at 910 nm central wavelength, and a vacuum compressor. The final parametrical amplifier and the compressor are described in detail. Scaling of such architecture to multipetawatt power is discussed.

  5. Surface modification of polymethylmethacrylate irradiated with 60 fs single laser pulses

    Czech Academy of Sciences Publication Activity Database

    Klinger, D.; Sobierajski, R.; Nietubyc, R.; Krzywinski, J.; Pelka, J.; Juha, Libor; Jurek, M.; Zymierska, D.; Guizard, S.; Merdji, H.

    2009-01-01

    Roč. 78, Suppl. 10 (2009), S71-S74 ISSN 0969-806X R&D Projects: GA AV ČR KAN300100702; GA MŠk LC510; GA MŠk(CZ) LC528; GA MŠk LA08024; GA AV ČR IAA400100701 Institutional research plan: CEZ:AV0Z10100523 Keywords : polymethylmethacrylate (PMMA) * IR laser ablation * femtosecond laser pulse Subject RIV: BH - Optics, Masers, Lasers Impact factor: 1.149, year: 2009

  6. Mechanical behavior and microstructure of Ti{sub 20}Hf{sub 20}Zr{sub 20}Ta{sub 20}Nb{sub 20} high-entropy alloy loaded under quasi-static and dynamic compression conditions

    Energy Technology Data Exchange (ETDEWEB)

    Dirras, G., E-mail: dirras@univ-paris13.fr [Université Paris 13, Sorbonne Paris Cité, LSPM-CNRS, UPR 3407, 99 avenue JB Clément, 93430 Villetaneuse (France); Couque, H. [Nexter-munitions, 7 Route de Guerry, 18200 Bourges (France); Lilensten, L. [Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC, 94320 Thiais (France); Heczel, A. [Department of Materials Physics, Eötvös Loránd University, Budapest, P.O.B. 32, H-1518 (Hungary); Tingaud, D. [Université Paris 13, Sorbonne Paris Cité, LSPM-CNRS, UPR 3407, 99 avenue JB Clément, 93430 Villetaneuse (France); Couzinié, J.-P.; Perrière, L. [Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC, 94320 Thiais (France); Gubicza, J. [Department of Materials Physics, Eötvös Loránd University, Budapest, P.O.B. 32, H-1518 (Hungary); Guillot, I. [Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC, 94320 Thiais (France)

    2016-01-15

    The microstructure and the mechanical behavior of equimolar Ti{sub 20}Hf{sub 20}Zr{sub 20}Ta{sub 20}Nb{sub 20} high-entropy alloy in a wide range of initial strain rates between ~ 10{sup −3} s{sup −1} and ~ 3.4 × 10{sup 3} s{sup −1} were studied. A significant increment in the yield strength with increasing strain rate was observed. The yield strength at ~ 3.4 × 10{sup 3} s{sup −1} was about 40% higher than that measured at ~ 10{sup −3} s{sup −1}. Analysis by electron backscatter diffraction shows that in the low strain rate regime (up to ~ 10 s{sup −1}) the deformation occurs mainly in evenly distributed bands, while in the dynamic regime the deformation is strongly localized in macroscopic shear bands accompanied by softening even after the onset of yielding. The Kernel Average Misorientation technique reveals a high level of lattice rotation within these bands that also carries intense shear. In addition, X-ray diffraction line profile analysis indicates that the sharp increase in the flow stress is mostly related to an increase of the dislocation density. - Highlights: • Strain rate effect on the plastic behavior of Ti{sub 20}Hf{sub 20}Zr{sub 20}Ta{sub 20}Nb{sub 20} HEA was studied. • Low strain rate regime was characterized by a continuous hardening. • At high strain rates softening occurred shortly after the onset of yielding. • Intense strain localization in shear bands occurred in the high strain rate regime. • High dislocation density explained the upturn of flow stress at high strain rates.

  7. Microstructural investigation of plastically deformed Ti{sub 20}Zr{sub 20}Hf{sub 20}Nb{sub 20}Ta{sub 20} high entropy alloy by X-ray diffraction and transmission electron microscopy

    Energy Technology Data Exchange (ETDEWEB)

    Dirras, G., E-mail: dirras@univ-paris13.fr [Université Paris 13, Sorbonne Paris Cité, LSPM (UPR 3407) CNRS, 99 avenue JB Clément, 93430 Villetaneuse (France); Gubicza, J.; Heczel, A. [Department of Materials Physics, Eötvös Loránd University, Budapest, P.O. Box 32, H-1518 (Hungary); Lilensten, L.; Couzinié, J.-P.; Perrière, L.; Guillot, I. [Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC, 94320 Thiais (France); Hocini, A. [Université Paris 13, Sorbonne Paris Cité, LSPM (UPR 3407) CNRS, 99 avenue JB Clément, 93430 Villetaneuse (France)

    2015-10-15

    The microstructure evolution in body-centered cubic (bcc) Ti{sub 20}Zr{sub 20}Hf{sub 20}Nb{sub 20}Ta{sub 20} high entropy alloy during quasi-static compression test was studied by X-ray line profile analysis (XLPA) and transmission electron microscopy (TEM). The average lattice constant and other important parameters of the microstructure such as the mean crystallite size, the dislocation density and the edge/screw character of dislocations were determined by XLPA. The elastic anisotropy factor required for XLPA procedure was determined by nanoindentation. XLPA shows that the crystallite size decreased while the dislocation density increased with strain during compression, and their values reached about 39 nm and 15 × 10{sup 14} m{sup −2}, respectively, at a plastic strain of ~ 20%. It was revealed that with increasing strain the dislocation character became more screw. This can be explained by the reduced mobility of screw dislocations compared to edge dislocations in bcc structures. These observations are in line with TEM investigations. The development of dislocation density during compression was related to the yield strength evolution. - Highlights: • Ti{sub 20}Zr{sub 20}Hf{sub 20}Nb{sub 20}Ta{sub 20} high entropy alloy was processed by arc-melting. • The mechanical was evaluated by RT compression test. • The microstructure evolution was studied by XLPA and TEM. • With increasing strain the dislocation character became more screw. • The yield strength was related to the development of the dislocation density.

  8. Single-clad Tm-Ho:fiber amplifier for high-power sub-100-fs pulses around 1.9 μm.

    Science.gov (United States)

    Coluccelli, Nicola; Cassinerio, Marco; Laporta, Paolo; Galzerano, Gianluca

    2013-08-01

    A Tm-Ho:fiber amplifier based on single-clad geometry is demonstrated for the generation of high-power femtosecond pulses around 1.9 μm. The amplifier is seeded by the low-power Raman soliton generated by an Er:fiber femtosecond laser. Pulse trains at a repetition rate of 250 MHz tunable from 1.84 to 1.92 μm with corresponding powers from 2.6 to 3 W and durations from 80 to 105 fs have been obtained. Beating with a single-frequency Tm laser has shown that the pulse coherence is highly preserved. The overall power fluctuations have been measured to be as low as 0.6%.

  9. Generation of 70 fs broadband pulses in a hybrid nonlinear amplification system with mode-locked Yb:YAG ceramic oscillator

    Science.gov (United States)

    Liu, Yang; Wang, Chao; Luo, Daping; Yang, Chao; Li, Jiang; Ge, Lin; Pan, Yubai; Li, Wenxue

    2017-12-01

    We demonstrate the passively mode-locked laser performances of bulk Yb:YAG ceramic prepared by non-aqueous tape casting, which generates initial pulses in temporal width of 3 ps and spectrum width of 3 nm without intra-cavity dispersion management. The ceramic laser is further used as seeding oscillator in a fiber nonlinear amplification system, where ultrashort pulses in maximum output power of ∼100 W and pulse duration of 70 fs are achieved. Moreover, the laser spectrum is broadened to be ∼41 nm due to self-phase modulation effects in the gain fiber, overcoming the narrow spectrum limitations of ceramic materials. Our approach opens a new avenue for power-scaling and spectrum-expanding of femtosecond ceramic lasers.

  10. Laser assisted removal of synthetic painting-conservation materials using UV radiation of ns and fs pulse duration: Morphological studies on model samples

    Energy Technology Data Exchange (ETDEWEB)

    Pouli, P., E-mail: ppouli@iesl.forth.gr [Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas (IESL-FORTH), P.O. Box 1385, Heraklion, 71110 Crete (Greece); Nevin, A. [Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas (IESL-FORTH), P.O. Box 1385, Heraklion, 71110 Crete (Greece); Courtauld Institute of Art, University of London, Somerset House, Strand, WC2R 0RN, London (United Kingdom); Andreotti, A.; Colombini, P. [Dipartimento di Chimica e Chimica Industriale, Universita di Pisa, via Risorgimento 35, 56126 Pisa (Italy); Georgiou, S. [Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas (IESL-FORTH), P.O. Box 1385, Heraklion, 71110 Crete (Greece); Fotakis, C. [Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas (IESL-FORTH), P.O. Box 1385, Heraklion, 71110 Crete (Greece); Department of Physics, University of Crete, P.O. Box 2208, Heraklion, 71003 (Greece)

    2009-02-15

    In an effort to establish the optimal parameters for the cleaning of complex layers of polymers (mainly based on acrylics, vinyls, epoxys known as Elvacite, Laropal, Paraloid B72, among others) applied during past conservation treatments on the surface of wall paintings, laser cleaning tests were performed with particular emphasis on the plausible morphological modifications induced in the remaining polymeric material. Pulse duration effects were studied using laser systems of different pulse durations (ns and fs) at 248 nm. Prior to tests on real fragments from the Monumental Cemetery in Pisa (Italy) which were coated with different polymers, attention was focused on the study of model samples consisting of analogous polymer films cast on quartz disks. Ultraviolet irradiation is strongly absorbed by the studied materials both in ns and fs irradiation regimes. However, it is demonstrated that ultrashort laser pulses result in reduced morphological alterations in comparison to ns irradiation. In addition, the dependence of the observed alterations on the chemical composition of the consolidation materials in both regimes was examined. Most importantly, it was shown that in this specific conservation problem, an optimum cleaning process may rely not only on the minimization of laser-induced morphological changes but also on the exploitation of the conditions that favour the disruption of the adhesion between the synthetic material and the painting.

  11. 175 fs-long pulses from a high-power single-mode Er-doped fiber laser at 1550 nm

    Science.gov (United States)

    Elahi, Parviz; Kalaycıoğlu, Hamit; Li, Huihui; Akçaalan, Önder; Ilday, F. Ömer

    2017-11-01

    Development of Er-doped ultrafast lasers have lagged behind the corresponding developments in Yb- and Tm-doped lasers, in particular, fiber lasers. Various applications benefit from operation at a central wavelength of 1.5 μm and its second harmonic, including emerging applications such as 3D processing of silicon and 3D printing based on two-photon polymerization. We report a simple, robust fiber master oscillator power amplifier operating at 1.55 μm, implementing chirp pulse amplification using single-mode fibers for diffraction-limited beam quality. The laser generates 80 nJ pulses at a repetition rate of 43 MHz, corresponding to an average power of 3.5 W, which can be compressed down to 175 fs. The generation of short pulses was achieved using a design which is guided by numerical simulations of pulse propagation and amplification and manages to overturn gain narrowing with self-phase modulation, without invoking excessive Raman scattering processes. The seed source for the two-stage amplifier is a dispersion-managed passively mode-locked oscillator, which generates a ∼40 nm-wide spectrum and 1.7-ps linearly chirped pulses.

  12. Single particle deformation and analysis of the same silica coated gold nanorods before and after fs-laser pulse excitation

    NARCIS (Netherlands)

    Albrecht, W.|info:eu-repo/dai/nl/369492242; Deng, Tian-Song; Goris, Bart; van Huis, M.A.|info:eu-repo/dai/nl/304097586; Bals, Sarah; van Blaaderen, Alfons|info:eu-repo/dai/nl/092946488

    2016-01-01

    We performed single particle deformation experiments on silicacoated gold nanorods under femtosecond (fs) illumination. Changes in the particle shape were analyzed by electron microscopy and associated changes in the plasmon resonance by electron energy loss spectroscopy. Silica-coated rods were

  13. On-chip nanostructuring and impedance trimming of transparent and flexible ITO electrodes by laser induced coherent sub-20 nm cuts

    Energy Technology Data Exchange (ETDEWEB)

    Afshar, Maziar, E-mail: m.afshar@lmm.uni-saarland.de [Lab for Micromechanics, Microfluidics, and Microactuators, Saarland University, Saarbrücken D-66123 (Germany); Leber, Moritz [Lab for Micromechanics, Microfluidics, and Microactuators, Saarland University, Saarbrücken D-66123 (Germany); Poppendieck, Wigand [Department of Medical Engineering & Neuroprosthetics, Fraunhofer Institute for Biomedical Engineering, St. Ingbert D-66386 (Germany); König, Karsten [Lab for Biophotonics and Laser Technology, Saarland University, Saarbrücken D-66123 (Germany); Seidel, Helmut; Feili, Dara [Lab for Micromechanics, Microfluidics, and Microactuators, Saarland University, Saarbrücken D-66123 (Germany)

    2016-01-01

    Graphical abstract: - Highlights: • A novel method to make sub-20 nm nanopatterning in ITO thin films by laser writing. • A novel way to functionalize ITO bio-electrodes to yield near-field polarizing feature. • A basic characterization of ITO electrodes was performed by impedance spectroscopy. • Presentation of simulations and possible theoretical approaches to explain the results. - Abstract: In this work, the effect of laser-induced nanostructuring of transparent indium tin oxide (ITO) electrodes on flexible glass is investigated. Multi-electrode arrays (MEA) for electrical and optical characterization of biological cells were fabricated using standard MEMS technologies. Optimal sputter parameters concerning oxygen flow, sputter power and ambient pressure for ITO layers with both good optical and electrical properties were determined. Afterwards, coherent sub-20 nm wide and 150 nm deep nanocuts of many micrometers in length were generated within the ITO electrodes by a sub-15 femtosecond (fs) pulsed laser. The influence of laser processing on the electrical and optical properties of electrodes was investigated. The electrochemical impedance of the manufactured electrodes was measured before and after laser modification using electrochemical impedance spectroscopy. A small reduction in electrode impedance was observed. These nanostructured electrodes show also polarizing effects by the visible spectrum.

  14. Materials challenges for sub-20nm lithography

    Science.gov (United States)

    Thackeray, James W.

    2011-04-01

    This paper discusses the future of resist materials for sub-20nm lithography. It is my contention that polymer-bound PAG based resists will be used to 16nm node. There has been enough progress in resolution and sensitivity to justify the use of these materials. PBP resists have shown that the principal demerit of acid diffusion can be overcome through attachment of the PAG anion to the lithographic polymer. Since the introduction of this chemically amplified resist approach, we have seen steady improvement in resolution, sensitivity, and LWR. We have also seen improvement in OOB response, outgassing, and pattern collapse. There is no doubt that continuous improvement is still required for these resist systems. We believe that increasing the overall resist quantum yield for acid generation substantially improves the shot noise problem thereby leading to faster high resolution resist materials. Using a 0.30NA EUV tool with dipole, we can achieve 22nm hp resolution, with 12mJ dose, and 4.2nm LWR.

  15. Wave-packet dynamics in alkaline dimers. Investigation and control through coherent excitation with fs-pulses; Wellenpaketdynamik in Alkali-Dimeren. Untersuchung und Steuerung durch kohaerente Anregung mit fs-Pulsen

    Energy Technology Data Exchange (ETDEWEB)

    Sauer, F.N.B.

    2007-07-01

    During my PhD thesis I investigated alkaline dimers with coherent control in a molecular beam as well as with pump-probe spectroscopy in a magneto-optical trap (MOT). The aim of the coherent control experiments were the isotope selective ionization with phase- and amplitude-shaped fs-pulses. Chapter 4 described the gained results of isotope selective ionization of NaK and KRb in a molecular beam by using different pulse formers. For the NaK dimer was the reached optimization factor R{sub Ph} and {sub Ampl}{sup 770}=R{sub max}/R{sub min}=25 between maximization and minimization of the isotopomer ratio ({sup 23}Na{sup 39}K){sup +}/({sup 23}Na{sup 41}K){sup +} with phase and amplitude modulation of the fs-pulse with a central wavelength of {lambda}=770 nm. From the electronic ground-state X(1){sup 1}{sigma}{sup +};{nu}''=0 transfers a one-photon-excitation population in the first excited A(2) {sup 1}{sigma}{sup +} state. The coherent control experiment on KRb was used to maximize and minimize the isotopomer ratio ({sup 124}KRb){sup +}/({sup 126}KRb){sup +}. It was the first coherent control experiment with a spectral resolution of 1.84 cm{sup -1}/Pixel. For the phase and amplitude optimization was the received optimization factor between minimization and maximization of the isotopomer ratio R{sub Ph} and {sub Ampl}=R{sub max}/R{sub min}=7 at a central wavelength of 840 nm. The results showed a stepwise excitation process from the electronic ground-state in the first excited (2){sup 1}{sigma}{sup +} state with a further excitation, that is possible over three resonant energy potential curves into the ionic ground-state. In the second part of my thesis I realized pump-probe spectroscopy of Rb{sub 2} dimers in a dark SPOT. (orig.)

  16. An exhaustive study of laser damage in ion beam sputtered pure and mixture oxide thin films at 1030 nm with 500 fs pulse durations

    Science.gov (United States)

    Gallais, Laurent; Mangote, Benoit; Commandré, Mireille; Mende, Mathias; Jensen, Lars; Ehlers, Henrik; Jupé, Marco; Ristau, Detlev; Melninkaitis, Andrius; Sirutkaitis, Valdas; Kičas, Simonas; Tolenis, Tomas; Drazdys, Ramutis

    2012-11-01

    We report on the laser damage resistance of thin films prepared by Ion Beam Sputtering. The samples are fused silica substrates coated with single layer films of pure oxides (SiO2, Nb2O5, ZrO2, HfO2, Ta2O5, Al2O3, Sc2O3) and oxide mixtures with various ratios (Nb2O5/SiO2, ZrO2/SiO2, HfO2/SiO2, Ta2O5/SiO2, Al2O3/SiO2 and Sc2O3/SiO2). For this study the LIDT of more than 60 different samples have measured at 1030nm with pulse durations of 500fs with single pulse irradiation. The results are expressed and compared in terms of LIDT as a function of the measured band gap energy and refractive index. For simple oxide materials a linear evolution of the LIDT with bandgap is observed, with the exception of Sc2O3 material where a very high damage threshold is observed, compared to other high index materials. In the case of mixtures, a more complex behavior is evidenced.

  17. Protons and electrons generated from a 5-{mu}m thick copper tape target irradiated by s-, circularly-, and p-polarized 55-fs laser pulses

    Energy Technology Data Exchange (ETDEWEB)

    Li, Z. [Advanced Photon Research Center, Japan Atomic Energy Agency, Umeimidai 8-1, Kizu, Kyoto 619-0215 (Japan); National Institute of Radiological Sciences, Anagawa 4-9-1, Inage, Chiba 263-8555 (Japan)], E-mail: lizhong@sinap.ac.cn; Daido, H. [Advanced Photon Research Center, Japan Atomic Energy Agency, Umeimidai 8-1, Kizu, Kyoto 619-0215 (Japan); Fukumi, A. [Advanced Photon Research Center, Japan Atomic Energy Agency, Umeimidai 8-1, Kizu, Kyoto 619-0215 (Japan); National Institute of Radiological Sciences, Anagawa 4-9-1, Inage, Chiba 263-8555 (Japan); Bulanov, S.V.; Sagisaka, A.; Ogura, K.; Yogo, A.; Nishiuchi, M.; Orimo, S.; Mori, M. [Advanced Photon Research Center, Japan Atomic Energy Agency, Umeimidai 8-1, Kizu, Kyoto 619-0215 (Japan); Oishi, Y.; Nayuki, T.; Fujii, T.; Nemoto, K. [Central Research Institute of Electric Power Industry, Nagasaka 2-6-1, Yokosuka, Kanagawa 240-0196 (Japan); Nakamura, S.; Noda, A. [Institute of Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011 (Japan); Choi, I.W.; Sung, J.H.; Ko, D.-K.; Lee, J. [Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju 500-712 (Korea, Republic of)

    2007-10-01

    The angular distribution and energy spectra of energetic protons emitted from a 5-{mu}m thick copper tape target irradiated by p-, circularly-, and s-polarized 55-fs laser pulses with intensity of 8-9x10{sup 18} W/cm{sup 2} are measured. The protons are found in the rear target normal direction while the hot electrons are found in the laser propagation direction. The maximum energy of protons is equal to 1.34 MeV for p-polarized irradiation. The energy spectrum of protons depends strongly on the total amount of electrons but it does not so strongly depend on the electron angular distribution under our experiment conditions. Two-dimensional particle in cell simulations also show the maximal proton acceleration for the p-polarized pulse, less efficient acceleration for the circular polarization, and lower acceleration efficiency in the case of the s-polarization, which is related to the electron acceleration efficiency at the front side of the target.

  18. Generation of spin waves by a train of fs-laser pulses: a novel approach for tuning magnon wavelength.

    Science.gov (United States)

    Savochkin, I V; Jäckl, M; Belotelov, V I; Akimov, I A; Kozhaev, M A; Sylgacheva, D A; Chernov, A I; Shaposhnikov, A N; Prokopov, A R; Berzhansky, V N; Yakovlev, D R; Zvezdin, A K; Bayer, M

    2017-07-18

    Currently spin waves are considered for computation and data processing as an alternative to charge currents. Generation of spin waves by ultrashort laser pulses provides several important advances with respect to conventional approaches using microwaves. In particular, focused laser spot works as a point source for spin waves and allows for directional control of spin waves and switching between their different types. For further progress in this direction it is important to manipulate with the spectrum of the optically generated spin waves. Here we tackle this problem by launching spin waves by a sequence of femtosecond laser pulses with pulse interval much shorter than the relaxation time of the magnetization oscillations. This leads to the cumulative phenomenon and allows us to generate magnons in a specific narrow range of wavenumbers. The wavelength of spin waves can be tuned from 15 μm to hundreds of microns by sweeping the external magnetic field by only 10 Oe or by slight variation of the pulse repetition rate. Our findings expand the capabilities of the optical spin pump-probe technique and provide a new method for the spin wave generation and control.

  19. Investigation of laser damage in single layer coatings with pulse durations from 45fs to 24ps

    Science.gov (United States)

    Mangote, B.; Gallais, L.; Melninkaitis, A.; Mirauskas, J.; Zerrad, M.; Jeskevic, M.; Sirutkaitis, V.; Commandré, M.

    2010-11-01

    Single shot LIDT of single layer coatings of different deposited materials (SiO2, HfO2, Ta2O5 and Nb2O5) have been studied. We report dependence of the damage threshold with different operational and material parameters (pulse duration, nature of the deposited material, deposition process or thickness of the layer). For interpretation a model dedicated to optical coatings and based on the conduction band electron rate equation is used. The simulations are compared to experiments. The theoretical approach is in good accordance to the experimental data.

  20. Multiple ionization of Ne and Ar by intense 25 fs laser pulses: few-electron dynamics studied with ion momentum spectroscopy

    Energy Technology Data Exchange (ETDEWEB)

    Zrost, K [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Rudenko, A [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Ergler, Th [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Feuerstein, B [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Jesus, V L B de [Centro Federal de Educacao Tecnologica de Quimica de Nilopolis/RJ, Rua Lucio Tavares 1045, Centro-Nilopolis 26530-060, Rio de Janeiro (Brazil); Schroeter, C D [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Moshammer, R [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Ullrich, J [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany)

    2006-07-14

    Momentum distributions of Ne{sup 2-5+} and Ar{sup 2-7+} ions created by 795 nm, 25 fs laser pulses at intensities of up to 20 PW cm{sup -2} have been measured using a 'reaction microscope'. The experimental results indicate that below 2.0 PW cm{sup -2} the production of Ne{sup 3-4+} ions is dominated by n-fold electron impact ionization (e, ne) collisions of the recolliding electron with its parent ion. Multiple ionization of Ar is found to be dominated by mechanisms involving a combination of recollision-induced and field-induced steps as well as intermediate excitations in the whole range of intensities where non-sequential ionization occurs. Whereas a clear double peak structure characteristic for electron recollision was observed in the momentum distributions of up to Ne{sup 5+}, no signatures of non-sequential ionization were found in the spectra of Ar ions with the charge state higher than 4.

  1. 40-fs hydrogen Raman laser

    Energy Technology Data Exchange (ETDEWEB)

    Didenko, N V; Konyashchenko, A V; Kostryukov, P V; Losev, L L; Pazyuk, V S [P N Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation); Tenyakov, S Yu [Avesta Ltd., Troitsk, Moscow (Russian Federation); Molchanov, V Ya; Chizhikov, S I; Yushkov, K B [National University of Science and Technology ' MISIS' , Acoustooptical Research Center, Moscow (Russian Federation)

    2015-12-31

    40-fs first Stokes pulses at a wavelength of 1.2 μm were generated in a hydrogen SRS-converter pumped by orthogonally polarised double chirped pulses of a Ti : sapphire laser. To obtain a Stokes pulse close to a transform-limited one, a programmed acousto-optic dispersive delay line was placed between the master oscillator and regenerative amplifier. The energy efficiency of Stokes radiation conversion reached 22%. (lasers)

  2. Fiber Optical Parametric Chirped Pulse Amplification of Sub-Picosecond Pulses

    DEFF Research Database (Denmark)

    Cristofori, Valentina; Lali-Dastjerdi, Zohreh; Da Ros, Francesco

    2013-01-01

    We demonstrate experimentally, for the first time to our knowledge, fiber optical parametric chirped pulse amplification of 400-fs pulses. The 400-fs signal is stretched, amplified by 26 dB and compressed back to 500 fs.......We demonstrate experimentally, for the first time to our knowledge, fiber optical parametric chirped pulse amplification of 400-fs pulses. The 400-fs signal is stretched, amplified by 26 dB and compressed back to 500 fs....

  3. Production of doubly charged helium ions by two-photon absorption of an intense sub-10-fs soft x-ray pulse at 42 eV photon energy.

    Science.gov (United States)

    Nabekawa, Yasuo; Hasegawa, Hirokazu; Takahashi, Eiji J; Midorikawa, Katsumi

    2005-02-04

    We report on the observation of doubly charged helium ions produced by a nonlinear interaction between a helium atom and photons with a photon energy of 42 eV which are generated with the 27th harmonic of a femtosecond pulse from a Ti:sapphire laser. The number of ions is proportional to the square of the intensity of the 27th harmonic pulse, and thus two-photon double ionization should be dominantly induced as compared with other nonlinear processes accompanying sequential ionization via a singly charged ion. This phenomenon is utilized to measure the pulse duration of the 27th harmonic pulse by using an autocorrelation technique, for the first time to our knowledge, and as a result a duration of 8 fs is found.

  4. Extended Hubbard model on a C{sub 20} molecule

    Energy Technology Data Exchange (ETDEWEB)

    Lin Fei [Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (United States); Soerensen, Erik S [Department of Physics and Astronomy, McMaster University, Hamilton, ON, L8S 4M1 (Canada); Kallin, Catherine [Department of Physics and Astronomy, McMaster University, Hamilton, ON, L8S 4M1 (Canada); Berlinsky, A John [Department of Physics and Astronomy, McMaster University, Hamilton, ON, L8S 4M1 (Canada)

    2007-11-14

    The electronic correlations on a C{sub 20} molecule, as described by an extended Hubbard Hamiltonian with a nearest-neighbor Coulomb interaction of strength V, are studied using quantum Monte Carlo and exact diagonalization methods. For electron-doped C{sub 20}, it is known that pair binding arising from a purely electronic mechanism is absent within the standard Hubbard model (V = 0). Here we show that this is also the case for hole doping for 0sub 20} are computed. The spin-spin and charge-charge correlations are very short-range, although a weak enhancement in the pairing correlation is observed for a distance equal to the molecular diameter.

  5. Dynamic Characterization of Fiber Optical Chirped Pulse Amplification for Sub-ps Pulses

    DEFF Research Database (Denmark)

    Cristofori, Valentina; Lali-Dastjerdi, Zohreh; Rishøj, Lars Søgaard

    2013-01-01

    We investigate experimentally the propagation of sub-picosecond pulses in fiber optical parametric chirped pulse amplifiers, showing a significant broadening of the pulses from 450 fs up to 720 fs due to dispersion and self-phase modulation.......We investigate experimentally the propagation of sub-picosecond pulses in fiber optical parametric chirped pulse amplifiers, showing a significant broadening of the pulses from 450 fs up to 720 fs due to dispersion and self-phase modulation....

  6. The thermal properties of amorphous Fe{sub 40}Pd{sub 40}B{sub 20} and Fe{sub 60}Pd{sub 20}B{sub 20} thin films

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Yuan-Tsung, E-mail: ytchen@yuntech.edu.tw

    2015-07-15

    The thermal stability of FePdB thin films was studied using nonisothermal and isothermal analyses. X-ray diffraction (XRD) patterns indicated that Fe{sub 40}Pd{sub 40}B{sub 20} and Fe{sub 60}Pd{sub 20}B{sub 20} films with thicknesses in the range 25–75 Å were amorphous, whereas Fe{sub 40}Pd{sub 40}B{sub 20} and Fe{sub 60}Pd{sub 20}B{sub 20} films with thicknesses in the range 100–200 Å exhibited a nanocrystalline FePd (111) structure. The crucial glass forming ability index (γ and γ{sub m}) was determined using the differential scanning calorimetry (DSC) results of amorphous FePdB films. The Kissinger formula was applied to calculate the activation energy (Q) of crystallization for determining the resistance of the films to crystallization. Thermal analysis showed that the thermal stability and incubation time of Fe{sub 40}Pd{sub 40}B{sub 20} are more favorable than those of Fe{sub 60}Pd{sub 20}B{sub 20}. - Highlights: • FePdB films were amorphous in the range 25–75 Å. • FePdB films exhibited a FePd (111) structure in the range 100–200 Å. • The crucial glass forming ability index was determined using the DSC. • Kissinger formula was applied to calculate the activation energy of crystallization. • The thermal performance of Fe{sub 40}Pd{sub 40}B{sub 20} is more favorable than Fe{sub 60}Pd{sub 20}B{sub 20}.

  7. Towards Using DNAzyme in Sub-20 nm Lithography

    Science.gov (United States)

    Dirar, Qassim

    DNAzyme is a unique molecule with applications ranging from gene regulation to molecular machines. Another attractive venue for the use of DNAzyme is next generation lithography, sub-20 nm lithography, harnessing the unique features of specific recognition and self-assembly. Tools to achieve that goal are discussed and experimental procedures were presented. Loading DNAzyme on gold nanoparticles, depositing self-assembled monolayers and DNA patterning using soft lithographic techniques are tools that are explored. To support the findings, different characterization techniques are employed.

  8. A 158 fs 5.3 nJ fiber-laser system at 1 mu m using photonic bandgap fibers for dispersion control and pulse compression

    DEFF Research Database (Denmark)

    Nielsen, C.K.; Jespersen, Kim Giessmann; Keiding, S.R.

    2006-01-01

    We demonstrate a 158 fs 5.3 nJ mode-locked laser system based on a fiber oscillator, fiber amplifier and fiber compressor. Dispersion compensation in the fiber oscillator was obtained with a solid-core photonic bandgap (SC-PBG) fiber spliced to standard fibers, and external compression is obtained...

  9. SeaWiFS

    Data.gov (United States)

    Washington University St Louis — SEAWiFS_US is a high resolution (1km) satellite dataset derived from the eight wavelength SEAWiFS sensor. The dataset also includes the aerosol reflectance over the...

  10. Unified model of plasma formation, bubble generation and shock wave emission in water for fs to ns laser pulses (Conference Presentation)

    Science.gov (United States)

    Liang, Xiao-Xuan; Freidank, Sebastian; Linz, Norbert; Paltauf, Günther; Zhang, Zhenxi; Vogel, Alfred

    2017-03-01

    We developed modeling tools for optical breakdown events in water that span various phases reaching from breakdown initiation via solvated electron generation, through laser induced-plasma formation and temperature evolution in the focal spot to the later phases of cavitation bubble dynamics and shock wave emission and applied them to a large parameter space of pulse durations, wavelengths, and pulse energies. The rate equation model considers the interplay of linear absorption, photoionization, avalanche ionization and recombination, traces thermalization and temperature evolution during the laser pulse, and portrays the role of thermal ionization that becomes relevant for T > 3000 K. Modeling of free-electron generation includes recent insights on breakdown initiation in water via multiphoton excitation of valence band electrons into a solvated state at Eini = 6.6 eV followed by up-conversion into the conduction band level that is located at 9.5 eV. The ability of tracing the temperature evolution enabled us to link the model of laser-induced plasma formation with a hydrodynamic model of plasma-induced pressure evolution and phase transitions that, in turn, traces bubble generation and dynamics as well as shock wave emission. This way, the amount of nonlinear energy deposition in transparent dielectrics and the resulting material modifications can be assessed as a function of incident laser energy. The unified model of plasma formation and bubble dynamics yields an excellent agreement with experimental results over the entire range of investigated pulse durations (femtosecond to nanosecond), wavelengths (UV to IR) and pulse energies.

  11. Dynamic characterization and amplification of sub-picosecond pulses in fiber optical parametric chirped pulse amplifiers

    DEFF Research Database (Denmark)

    Cristofori, Valentina; Lali-Dastjerdi, Zohreh; Rishøj, Lars Søgaard

    2013-01-01

    We show a first-time demonstration of amplification of 400 fs pulses in a fiber optical parametric amplifier. The 400 fs signal is stretched in time, amplified by 26 dB and compressed back to 500 fs. A significant broadening of the pulses is experimentally shown due to dispersion and limited gain...... bandwidth both in saturated and unsaturated gain regimes....

  12. Possibility of gas sensor based on C{sub 20} molecular devices

    Energy Technology Data Exchange (ETDEWEB)

    Zhao, Wenkai [School of Physics and Optoelectronics Engineering, Ludong University, Yantai 264025 (China); Yang, Chuanlu, E-mail: yangchuanlu@126.com [School of Physics and Optoelectronics Engineering, Ludong University, Yantai 264025 (China); Zou, Dongqing [School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 (China); Sun, Zhaopeng [School of Physics and Optoelectronics Engineering, Ludong University, Yantai 264025 (China); Ji, Guomin [Electrical and Computer Engineering, The University of Oklahoma, Norman, Tulsa, OK 74078 (United States)

    2017-06-09

    We theoretically investigate the possibility of diatomic gas detection (NO, CO, O{sub 2}) by making use of the transport properties of the C{sub 20} molecular junctions. The calculations are performed by using nonequilibrium Green's function (NEGF) formalism in combination with density functional theory (DFT). In this work, we systematically study the most stable adsorption structural configurations, adsorption energy, and the transport properties on C{sub 20} molecular junctions with these diatomic gas molecules. It is found that NO and O{sub 2} gas molecule can be detected selectively. We suggest its possibility of nanosensors for highly sensitive and selective based on C{sub 20} molecular junction systems. - Highlights: • The most favorable adsorption site is investigated. • The mechanism of gas sensors is revealed. • NO and O{sub 2} gas molecules can be detected by C{sub 20} selectively.

  13. All-solid-state cavity-dumped sub-5-fs laser

    NARCIS (Netherlands)

    Baltuska, A.; Wei, Z; Pshenichnikov, M.S; Wiersma, D. A.; Szipocs, R.

    We discuss in detail a compact all-solid-state laser delivering sub-5-fs, 2-MW pulses at repetition rates up to 1 MHz. The shortest pulse generated thus far measures only 4.6 fs. The laser system employed is based on a cavity-dumped Ti:sapphire oscillator whose output is chirped in a single-mode

  14. Absolute configuration and optical activity of laevorotatory Bi/sub 12/TiO/sub 20/

    Energy Technology Data Exchange (ETDEWEB)

    Swindells, D.C.N.; Leal Gonzalez, J.

    1988-02-01

    Bismuth titanium oxide, Bi/sub 12/TiO/sub 20/, M/sub r/ = 2875.64, cubic, I23 (T/sup 3/), a = 10.188(6) A, V = 1057(1) A/sup 3/, Z = 2, D/sub x/ = 9.03 Mg m/sup -3/, lambda(MoKanti ..cap alpha..) = 0.71069 A, ..mu.. = 99.60 mm/sup -1/, F(000) = 2356, T = 294 K, R = 0.0205 for 453 unique reflections. The atomic arrangement has the same chirality as that of other laevorotatory sillenites (B/sub 12/SiO/sub 20/ and Bi/sub 12/GeO/sub 20/). The optical rotatory power is calculated by the program of Devarajan and Glazer and compared with experiment.

  15. Generating ultra-short energetic pulses with cascaded soliton compression in lithium niobate crystals

    DEFF Research Database (Denmark)

    Zhou, Binbin; Bache, Morten; Chong, A.

    2010-01-01

    By launching energetic femtosecond pulses in a lithium niobate crystal, the phase mismatched second-harmonic generation process compresses the 50 fs input pulse at 1250 nm to 30 fs through a soliton effect.......By launching energetic femtosecond pulses in a lithium niobate crystal, the phase mismatched second-harmonic generation process compresses the 50 fs input pulse at 1250 nm to 30 fs through a soliton effect....

  16. Magnetoresistivity of YbCo{sub 2}Zn{sub 20} at low temperature

    Energy Technology Data Exchange (ETDEWEB)

    Saiga, Yuta; Matsubayashi, Kazuyuki; Matsumoto, Takehiko; Uwatoko, Yoshiya [Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581 (Japan); Fujiwara, Tetsuya [Graduate School of Science and Engineering, Yamaguchi University, Yamaguchi 753-8512 (Japan); Kosaka, Masashi; Katano, Susumu, E-mail: y-saiga@issp.u-tokyo.ac.j [Graduate School of Science and Engineering, Saitama University, Saitama 338-8570 (Japan)

    2009-03-01

    We have studied the electrical resistivity of YbCo{sub 2}Zn{sub 20} under magnetic field up to 18 T. With applying magnetic field, the contribution of the Kondo interaction to the electrical resistivity is suppressed and the Fermi liquid regime is extended to higher temperature range. Both the T{sup 2} coefficient of the electrical resistivity A and the residual resistivity rho{sub 0} strongly decrease in magnetic field. From the magnetic variation of the resistivity, it has been found that YbCo{sub 2}Zn{sub 20} is classified as a heavy fermion system with small Kondo temperature of approx 1.0K.

  17. FS65 Disposition Option Report

    Energy Technology Data Exchange (ETDEWEB)

    Wenz, Tracy R. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-09-25

    This report outlines the options for dispositioning the MOX fuel stored in FS65 containers at LANL. Additional discussion regarding the support equipment for loading and unloading the FS65 transport containers is included at the end of the report.

  18. Multi-jump magnetic switching in ion-beam sputtered amorphous Co{sub 20}Fe{sub 60}B{sub 20} thin films

    Energy Technology Data Exchange (ETDEWEB)

    Raju, M.; Chaudhary, Sujeet; Pandya, D. K. [Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016 (India)

    2013-08-07

    Unconventional multi-jump magnetization reversal and significant in-plane uniaxial magnetic anisotropy (UMA) in the ion-beam sputtered amorphous Co{sub 20}Fe{sub 60}B{sub 20}(5–75 nm) thin films grown on Si/amorphous SiO{sub 2} are reported. While such multi-jump behavior is observed in CoFeB(10 nm) film when the magnetic field is applied at 10°–20° away from the easy-axis, the same is observed in CoFeB(12.5 nm) film when the magnetic field is 45°–55° away from easy-axis. Unlike the previous reports of multi-jump switching in epitaxial films, their observance in the present case of amorphous CoFeB is remarkable. This multi-jump switching is found to disappear when the films are crystallized by annealing at 420 °C. The deposition geometry and the energy of the sputtered species appear to intrinsically induce a kind of bond orientation anisotropy in the films, which leads to the UMA in the as-grown amorphous CoFeB films. Exploitation of such multi-jump switching in amorphous CoFeB thin films could be of technological significance because of their applications in spintronic devices.

  19. Magnetoresistance effect in Fe{sub 20}Ni{sub 80}/graphene/Fe{sub 20}Ni{sub 80} vertical spin valves

    Energy Technology Data Exchange (ETDEWEB)

    Entani, Shiro, E-mail: entani.shiro@qst.go.jp; Naramoto, Hiroshi; Sakai, Seiji [Quantum Beam Science Directorate, National Institutes for Quantum and Radiological Science and Technology, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195 (Japan); Seki, Takeshi; Yamamoto, Tatsuya; Takahashi, Saburo [Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan); Sakuraba, Yuya [Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan); National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-004 (Japan); Takanashi, Koki [Quantum Beam Science Directorate, National Institutes for Quantum and Radiological Science and Technology, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195 (Japan); Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan)

    2016-08-22

    Vertical spin valve devices with junctions of single- and bi-layer graphene interlayers sandwiched with Fe{sub 20}Ni{sub 80} (Permalloy) electrodes were fabricated by exploiting the direct growth of graphene on the Permalloy. The linear current-voltage characteristics indicated that ohmic contacts were realized at the interfaces. The systematic characterization revealed the significant modification of the electronic state of the interfacial graphene layer on the Permalloy surface, which indicates the strong interactions at the interface. The ohmic transport was attributable to the strong interface-interaction. The vertical resistivity of the graphene interlayer and the spin asymmetry coefficient at the graphene/Permalloy interface were obtained to be 0.13 Ω cm and 0.06, respectively. It was found that the strong interface interaction modifies the electronic structure and metallic properties in the vertical spin valve devices with bi-layer graphene as well as single-layer graphene.

  20. High-energy Few-cycle Pulses Directly Generated from Strongly Phase-mismatched Lithium Niobate Crystal

    DEFF Research Database (Denmark)

    Zhou, Binbin; Chong, A.; Wise, F.W.

    2012-01-01

    We show that effective soliton compression can be realized in strongly phase-mismatched quadratic media. Sub-15 fs pulses are experimentally generated directly from 10-mm-long bulk lithium niobate crystal by 120-fs input pulses at 1300 nm.......We show that effective soliton compression can be realized in strongly phase-mismatched quadratic media. Sub-15 fs pulses are experimentally generated directly from 10-mm-long bulk lithium niobate crystal by 120-fs input pulses at 1300 nm....

  1. Laser modification of silica, simulating pulse shape and length

    Energy Technology Data Exchange (ETDEWEB)

    Corrales, L. Rene [Departments of Materials Science and Engineering, and Chemistry, University of Arizona, Tucson, Arizona 85721 (United States)], E-mail: lrcorral@email.arizona.edu; Moore, Emily [Departments of Materials Science and Engineering, and Chemistry, University of Arizona, Tucson, Arizona 85721 (United States)

    2009-09-15

    Computer simulations of instantaneous thermal heating due to a laser pulse is modeled as a pulse occurring over 1 or 100 fs, during which time the atoms within a cylinder are given excess kinetic energy to mimic the effect of adding energy locally to a system by a laser. The response of the material under conditions in which a similar amount of energy is dumped within 1 fs versus over a 100 fs pulse with two distinct shapes, square and Gaussian-like, is explored. Key physics disclosed is that with a pulse width of 100 fs, as the energy is being added it begins to dissipate away from region where it is added. With a 1 fs (instantaneous) pulse there is greater initial ballistic behavior than when it is dumped over a 100 fs period. In the latter, there are localized hot spots displaying ballistic behavior.

  2. CW seeded optical parametric amplifier providing wavelength and pulse duration tunable nearly transform limited pulses.

    Science.gov (United States)

    Hädrich, S; Gottschall, T; Rothhardt, J; Limpert, J; Tünnermann, A

    2010-02-01

    An optical parametric amplifier that delivers nearly transform limited pulses is presented. The center wavelength of these pulses can be tuned between 993 nm and 1070 nm and, at the same time, the pulse duration is varied between 206 fs and 650 fs. At the shortest pulse duration the pulse energy was increased up to 7.2 microJ at 50 kHz repetition rate. Variation of the wavelength is achieved by applying a tunable cw seed while the pulse duration can be varied via altering the pump pulse duration. This scheme offers superior flexibility and scaling possibilities.

  3. Fs-laser processing of polydimethylsiloxane

    Energy Technology Data Exchange (ETDEWEB)

    Atanasov, Petar A., E-mail: paatanas@ie.bas.bg; Nedyalkov, Nikolay N. [Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Shose, Sofia 1784 (Bulgaria); Valova, Eugenia I.; Georgieva, Zhenya S.; Armyanov, Stefan A.; Kolev, Konstantin N. [Rostislaw Kaischew Institute of Physical Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Block 11, Sofia 1113 (Bulgaria); Amoruso, Salvatore; Wang, Xuan; Bruzzese, Ricardo [CNR-SPIN, Dipartimento di Scienze Fisiche, Universita degli Studi di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli (Italy); Sawczak, Miroslaw; Śliwiński, Gerard [Photophysics Department, The Szewalski Institute, Polish Academy of Sciences, 14 Fiszera St, 80-231 Gdańsk (Poland)

    2014-07-14

    We present an experimental analysis on surface structuring of polydimethylsiloxane films with UV (263 nm) femtosecond laser pulses, in air. Laser processed areas are analyzed by optical microscopy, SEM, and μ-Raman spectroscopy. The laser-treated sample shows the formation of a randomly nanostructured surface morphology. μ-Raman spectra, carried out at both 514 and 785 nm excitation wavelengths, prior and after laser treatment allow evidencing the changes in the sample structure. The influence of the laser fluence on the surface morphology is studied. Finally, successful electro-less metallization of the laser-processed sample is achieved, even after several months from the laser-treatment contrary to previous observation with nanosecond pulses. Our findings address the effectiveness of fs-laser treatment and chemical metallization of polydimethylsiloxane films with perspective technological interest in micro-fabrication devices for MEMS and nano-electromechanical systems.

  4. Investigation of possible fs-LASIK induced retinal damage

    Science.gov (United States)

    Schumacher, S.; Sander, M.; Stolte, A.; Doepke, C.; Baumgaertner, W.; Lubatschowski, H.

    2006-02-01

    Rapid development of new laser technologies enabled the application of ultra short lasers in refractive surgery. Focused ultra short laser pulses in near-infrared spectral range can generate a laser induced breakdown (LIB) in the cornea, which will disrupt the tissue. Cutting depth and position can be established by varying the laser focus. The fs-LASIK technique allows both flap and lenticule to be formed by using fs-pulses without the presence of any mechanical impact. During the cutting process not all of the pulse energy is deposited into the cornea; approximately half of the remaining energy propagates through the eye and reaches the retina. Though defocused, the transmitted energy can still induce damage to the retina due to absorption by the retinal pigment epithelium and the transfer of thermal energy to surrounding tissue. The fs-LASIK process was simulated with two laser systems; one continous-wave and one in the fs-regime. For the simulation the exposure time and focusing numerical aperature which defines the retinal spot size were varied. The Damage thresholds of the laser beam exposed eyes were determined in terms of ophthalmoscopic and histopathologic observations.

  5. Thermal expansion and magnetostriction measurements on PrIr{sub 2}Zn{sub 20}

    Energy Technology Data Exchange (ETDEWEB)

    Woerl, Andreas; Stingl, Christian; Sakai, Akito; Gegenwart, Philipp [Experimentalphysics VI, Center for Electronic Correlations and Magnetism, University of Augsburg (Germany); Matsumoto, Keisuke T.; Onimaru, Takahiro [Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima (Japan); Takabatake, Toshiro [Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima (Japan); Institute for Advanced Materials Research, Hiroshima University, Higashi-Hiroshima (Japan)

    2016-07-01

    Strong hybridization between electric quadrupole moments and conduction electrons gives rise to interesting physical phenomena such as new quantum phases and novel metallic properties. Non-fermi-liquid behavior based on the two channel Kondo effect is predicted by theory. PrIr{sub 2}Zn{sub 20} crystallizes in the CeCr{sub 2}Al{sub 20}-type structure, where the Pr{sup 3+} ions are surrounded by the highly symmetric cubic crystal field of 16 Zn atoms. The ground state is the non-magnetic Γ{sub 3} doublet and carries only electric quadrupole and a magnetic octupole moment. At T{sub Q}=0.11 K the electric quadrupole moments order in a antiferroquadrupolar way. A superconducting transition occurs at T{sub c}=0.05 K. The phase transition at T{sub Q}=0.11 K can be suppressed by high magnetic fields parallel to the [100] direction. We investigate the thermal expansion and magnetostriction at low temperatures. By applying high magnetic fields the system is tuned towards a quadrupolar quantum critical point. Furthermore the reaction of the system on breaking the cubic symmetry by compressive stress is explored.

  6. An improved method for characterizing photoresist lithographic and defectivity performance for sub-20nm node lithography

    Science.gov (United States)

    Amblard, Gilles; Purdy, Sara; Cooper, Ryan; Hockaday, Marjory

    2016-03-01

    The overall quality and processing capability of lithographic materials are critical for ensuring high device yield and performance at sub-20nm technology nodes in a high volume manufacturing environment. Insufficient process margin and high line width roughness (LWR) cause poor manufacturing control, while high defectivity causes product failures. In this paper, we focus on the most critical layer of a sub-20nm technology node LSI device, and present an improved method for characterizing both lithographic and post-patterning defectivity performance of state-of-the-art immersion photoresists. Multiple formulations from different suppliers were used and compared. Photoresists were tested under various process conditions, and multiple lithographic metrics were investigated (depth of focus, exposure dose latitude, line width roughness, etc.). Results were analyzed and combined using an innovative approach based on advanced software, providing clearer results than previously available. This increased detail enables more accurate performance comparisons among the different photoresists. Post-patterning defectivity was also quantified, with defects reviewed and classified using state-of-the-art inspection tools. Correlations were established between the lithographic and post-patterning defectivity performances for each material, and overall ranking was established among the photoresists, enabling the selection of the best performer for implementation in a high volume manufacturing environment.

  7. Ultrabroadband 50-130 THz pulses generated via phase-matcheddifference frequency mixing in LiIO3

    Energy Technology Data Exchange (ETDEWEB)

    Zentgraf, Thomas; Huber, Rupert; Nielsen, Nils C.; Chemla, DanielS.; Kaindl, Robert A.

    2006-10-10

    We report the generation of ultrabroadband pulses spanningthe 50-130 THz frequency range via phase-matched difference frequencymixing within the broad spectrum of sub-10 fs pulses in LiIO_3. Modelcalculations reproduce the octave-spanning spectra and predict few-cycleTHz pulse durations less than 20~;fs. The applicability of this scheme isdemonstrated with 9-fs pulses from a Ti:sapphire oscillator and with 7-fsamplified pulses from a hollow fiber compressor as pumpsources.

  8. High-power 100-fs SESAM-modelocked VESCEL (Conference Presentation)

    Science.gov (United States)

    Waldburger, Dominik; Link, Sandro M.; Alfieri, Cesare G. E.; Golling, Matthias; Keller, Ursula

    2017-03-01

    Ultrafast vertical external-cavity surface-emitting lasers (VECSELs) are versatile laser sources and feature high-power operation. To date the best modelocking results have been achieved with a semiconductor saturable absorber mirror (SESAM). Ultrafast optically pumped semiconductor disk lasers (SDLs) are compact, cost-efficient and provide excellent beam quality at gigahertz pulse repetition rates for applications such as for example multi-photon imaging, ultrafast communication and in particular self-referenced gigahertz frequency combs. The highest peak power obtained with an ultrafast VECSEL is 4.35 kW in 400-fs pulses and the shortest pulses until now are 107 fs at 3 mW average output power. Here we present a SESAM-modelocked VECSEL with pulses as short as 96 fs and 100 mW average output power. These are to the best of our knowledge the shortest pulses achieved by a fundamentally modelocked SDL and result in a very high peak power of 0.56 kW at a pulse repetition rate of 1.63 GHz. The short pulse duration was achieved by introducing a small amount of positive group delay dispersion with a single path through an external 2-mm thick ZnSe window plate that compensated the initially negatively chirped 107-fs output pulses. Currently the power is limited by the transition from fundamental modelocking to multi-pulse operation, which reduces the pulse peak power and introduces additional noise. Therefore, we present a study of the multi-pulse behavior of the high-power 100-fs SDL resulting from the complex modelocking mechanism. This study also provides an insight into special issues of pulse characterization that may suggest stable fundamental modelocking even if this is not the case.

  9. Room to high temperature measurements of flexible SOI FinFETs with sub-20-nm fins

    KAUST Repository

    Diab, Amer El Hajj

    2014-12-01

    We report the temperature dependence of the core electrical parameters and transport characteristics of a flexible version of fin field-effect transistor (FinFET) on silicon-on-insulator (SOI) with sub-20-nm wide fins and high-k/metal gate-stacks. For the first time, we characterize them from room to high temperature (150 °C) to show the impact of temperature variation on drain current, gate leakage current, and transconductance. Variation of extracted parameters, such as low-field mobility, subthreshold swing, threshold voltage, and ON-OFF current characteristics, is reported too. Direct comparison is made to a rigid version of the SOI FinFETs. The mobility degradation with temperature is mainly caused by phonon scattering mechanism. The overall excellent devices performance at high temperature after release is outlined proving the suitability of truly high-performance flexible inorganic electronics with such advanced architecture.

  10. Vortex distribution in small star-shaped Mo{sub 80}Ge{sub 20} plate

    Energy Technology Data Exchange (ETDEWEB)

    Vu, The Dang, E-mail: vu-dang@pe.osakafu-u.ac.jp [Department of Physics and Electronics, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan); Department of Physics and Electronics, University of Sciences, Vietnam National University HCMC (Viet Nam); Matsumoto, Hitoshi; Miyoshi, Hiroki [Department of Physics and Electronics, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan); Huy, Ho Thanh [Department of Physics and Electronics, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan); Department of Physics and Electronics, University of Sciences, Vietnam National University HCMC (Viet Nam); Shishido, Hiroaki [Department of Physics and Electronics, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan); Institute for Nanofabrication Research, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan); Kato, Masaru [Institute for Nanofabrication Research, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan); Department of Mathematical Science, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan); Ishida, Takekazu [Department of Physics and Electronics, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan); Institute for Nanofabrication Research, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)

    2017-02-15

    Highlights: • We found the general feature of vortex configuration in small star-shaped Mo{sub 80}Ge{sub 20} plates such as the appearance of symmetric line, the rule of shell filling and the existence of a magic number in both theoretical predictions and experimental results. • We found that the vortex distribution in a concave decagon tends to adapt to one of the five symmetric axes of the star-shaped plate expected in confining vortices in a restricted sample geometry. • The numerical results of Ginzburg–Landau equation confirmed that the filling rules for a vortex configuration and the existence of a magic number for small star-shaped plates are in good agreement with experiment results. - Abstract: We investigated vortex states in small star-shaped Mo{sub 80}Ge{sub 20} plates both theoretically and experimentally. The numerical calculations of the Ginzburg–Landau equation have been carried out with the aid of the finite element method, which is convenient to treat an arbitrarily shaped superconductor. The experimental results were observed by using a scanning SQUID microscope. Through systematic measurements, we figured out how vortices form symmetric configuration with increasing the magnetic field. The vortex distribution tends to adapt to one of five mirror symmetric lines when vortices were located at the five triangular horns of a star-shaped plate. The crystalline homogeneity of a sample was confirmed by the X-ray diffraction and the superconducting properties so that vortices are easily able to move for accommodating vortices in the geometric symmetry of the star-shaped plate. The experimental vortex configurations obtained for a star-shaped plate are in good agreement with theoretical predictions from the nonlinear Ginzburg–Landau equation.

  11. Fragmentation dynamics of molecular hydrogen in strong ultrashort laser pulses

    Energy Technology Data Exchange (ETDEWEB)

    Rudenko, A; Feuerstein, B; Zrost, K; Jesus, V L B de; Ergler, T; Dimopoulou, C; Schroeter, C D; Moshammer, R; Ullrich, J [Max-Planck-Institut fuer Kernphysik, D-69029 Heidelberg (Germany)

    2005-03-14

    We present the results of a systematic experimental study of dissociation and Coulomb explosion of molecular hydrogen induced by intense ultrashort (7-25 fs) laser pulses. Using coincident recoil-ion momentum spectroscopy we can distinguish the contributions from dissociation and double ionization even if they result in the same kinetic energies of the fragments. The dynamics of all fragmentation channels drastically depends on the pulse duration, and for 7 fs pulses becomes extremely sensitive to the pulse shape.

  12. Route to the minimum pulse duration in normal-dispersion fiber lasers

    Science.gov (United States)

    Chong, Andy; Renninger, William H.; Wise, Frank W.

    2011-01-01

    The factors that control the pulse duration in all-normal-dispersion lasers are identified. To minimize the pulse duration, the cavity dispersion should be as small as possible. For fixed dispersion, increasing pulse energy leads to shorter, but more-structured, pulses. Experiments performed with ordinary single-mode fiber at 1 μm wavelength agree reasonably with numerical simulations, and produce clean ~80-fs pulses. The simulations indicate that 30-fs pulses can be reached at higher energies. PMID:19015693

  13. Single attosecond pulse production with an ellipticity-modulated driving IR pulse

    Energy Technology Data Exchange (ETDEWEB)

    Strelkov, V [CELIA, Universite Bordeaux 1, 351 Cours de la liberation, 33405 Talence (France); Zair, A [CELIA, Universite Bordeaux 1, 351 Cours de la liberation, 33405 Talence (France); Tcherbakoff, O [CELIA, Universite Bordeaux 1, 351 Cours de la liberation, 33405 Talence (France); Lopez-Martens, R [Department of Physics, Lund Institute of Technology, PO Box 118, S-22100, Lund (Sweden); Cormier, E [CELIA, Universite Bordeaux 1, 351 Cours de la liberation, 33405 Talence (France); Mevel, E [CELIA, Universite Bordeaux 1, 351 Cours de la liberation, 33405 Talence (France); Constant, E [CELIA, Universite Bordeaux 1, 351 Cours de la liberation, 33405 Talence (France)

    2005-05-28

    We theoretically study attosecond pulse production via high-harmonic generation using a driving laser pulse with a time-dependent ellipticity. The theoretical approach produces results that agree with our experimental data obtained using 35 fs driving laser pulses and is further used to study the generation of single attosecond pulses with shorter laser pulses. We find an equation for the duration of the temporal window created by the time-varying driving laser polarization in which high-harmonic emission can occur. We formulate the necessary requirements concerning the driving laser field in order to confine the high-harmonic emission in the form of a single attosecond pulse. Indeed, we show that using incident 12 fs laser pulses single attosecond pulses can be produced for certain carrier-envelope phase (CEP) values of the driving pulse. For 6 fs incident laser pulses, single attosecond pulses are produced for all values of the CEP (the intensity of the attosecond pulse still depends on the actual value of the CEP). If implemented with state-of-the-art 5 fs laser pulses, this technique can even lead to the production of sub-100 as pulses. (letter to the editor)

  14. Abrupt symmetry decrease in the ThT{sub 2}Al{sub 20} alloys (T = 3d transition metal)

    Energy Technology Data Exchange (ETDEWEB)

    Uziel, A.; Bram, A.I. [Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva, 8410501 (Israel); Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva, 8410501 (Israel); Venkert, A. [Nuclear Research Center-Negev, POB 9001, Beer-Sheva (Israel); Kiv, A.E.; Fuks, D. [Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva, 8410501 (Israel); Meshi, L., E-mail: louisa@bgu.ac.il [Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva, 8410501 (Israel); Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva, 8410501 (Israel)

    2015-11-05

    Th-T-Al system, where T-3d transition metals, was studied at ThT{sub 2}Al{sub 20} stoichiometry to establish the influence of T on the structural stability of ternary aluminide formed. Different alloys were prepared, varying T in the row from Ti to Fe. Using electron microscopy and X-ray diffraction methods it was found that ThT{sub 2}Al{sub 20} phase adopts CeCr{sub 2}Al{sub 20} structure type when T = Ti, V, and Cr. Starting from Mn, the symmetry of the stable Al-rich phase, which forms in the alloys with the same composition, decreases from cubic to orthorhombic. The results of Density Functional Theory (DFT) calculations coincide with experiments. Concepts of the Theory of Coordination Compounds and Jahn–Teller effect were used to explain the observed abrupt change of the symmetry. These considerations were supported by DFT calculations. - Highlights: • Type of transition metal influences symmetry change in the ThT{sub 2}Al{sub 20} alloys. • It was found that cubic ThT{sub 2}Al{sub 20} phase is stable for T = Ti, V and Cr. • When T = Mn, Fe–Al + orthorhombic ThT{sub 2}Al{sub 10} are formed, lowering the symmetry. • Experimental results and DFT calculations were in full agreement. • TCC and of Jahn–Teller effect were used for explanation of the results.

  15. Ultrasonic study of the Yb-based heavy fermion compound YbRh{sub 2}Zn{sub 20}

    Energy Technology Data Exchange (ETDEWEB)

    Nakanishi, Y; Ito, K; Nakamura, M; Yoshizawa, M [Graduate School of Engineering, Iwate University, Morioka 020-8551 (Japan); Saiga, Y; Kosaka, M [Department of Physics, Saitama University, Saitama 338-8570 (Japan); Uwatoko, Y, E-mail: yoshiki@iwate-u.ac.j [Institute for Solid State Physics, University of Tokyo, Kashiwa 227-8581 (Japan)

    2009-03-01

    We report ultrasonic measurements on the high quality single crystal of the Yb-based heavy fermion compound YbRh{sub 2}Zn{sub 20} over a temperature range from 200 K to 0.5 K. A shallow, but clear minimum was observed in the temperature dependent elastic constants C{sub 11}, (C{sub 11} - C{sub 12})/2 and C{sub 44} around 15 K, probably attributed to the ground state and low-lying excited states of Yb{sup 3} in the cubic CEF. We discuss the low-temperature elastic properties and possible energy level scheme of localized 4f state of Yb{sup 3} ions in YbRh{sub 2}Zn{sub 20}. CEF ground state developed at the low temperatures and physical parameters relating to a quadrupolar moment in YbRh{sub 2}Zn{sub 20}

  16. Technology for fabrication of sub-20 nm silicon planar nanowires array

    Science.gov (United States)

    Miakonkikh, Andrey V.; Tatarintsev, Andrey A.; Rogozhin, Alexander E.; Rudenko, Konstantin V.

    2016-12-01

    The results presented on Silicon one-dimensional structures fabrication which are promising for application in nanoelectronics, sensors, THz-applications. We employ two-stage technology of precise anizotropic plasma etching of silicon over e-beam resist and isotropic removal of thermally oxidised defected surface layer of silicon by wet etch. As first the process for nano-fins fabrication on SOI substrate was developed. HSQ resist was used as a negative-tone electron beam resist with good etch-resistance, high resolution and high mechanical stability. The etching was performed by RIE in mix of SF6 + C4F8. plasma. By changing the ratio SF6:C4F8, the sidewall profile angle can be controlled thoroughly. Next step to minimize lateral size of structures and reduce impact of surface defects on electron mobility in core of nanowires was the application of surface thermal oxidation to defected layer. It was used for selective removal of damaged silicon layer and polymer residues. Oxidation was performed with controlled flow of dry oxygen and water vapour. Oxidation rate was precisely controlled by ex-situ spectral ellipsometry on unpatterned chips As a result the arrays of planar sub-20 nm Silicon nanowires with length in the range 200 nm - 500 um were made.

  17. Unconventional spin distributions in thick Ni{sub 80}Fe{sub 20} nanodisks

    Energy Technology Data Exchange (ETDEWEB)

    Kumar, D.; Lupo, P.; Haldar, A.; Adeyeye, A. O., E-mail: eleaao@nus.edu.sg [Information Storage Materials Laboratory, Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576 (Singapore)

    2016-05-09

    We study the spin distributions in permalloy (Py: Ni{sub 80}Fe{sub 20}) nanodisks as a function of diameter D (300 nm ≤ D ≤ 1 μm) and thickness L (30 nm ≤ L ≤ 100 nm). We observed that beyond a certain thickness, for a fixed disk diameter, an unconventional spin topology precipitates which is marked by the presence of a divergence field within the magnetic vortex curl. The strength of this divergence changes anti-symmetrically from negative to positive—depending on the core polarity—along the axis of the cylindrical nanodisk. This is also accompanied by a skyrmion-like out-of-plane bending of the spin vectors farther away from the disk center. Additionally, the vortex core dilates significantly when compared to its typical size. This has been directly observed using magnetic force microscopy. We determined from the ferromagnetic resonance spectroscopy measurements that the unconventional topology in the thicker nanodisks gyrated at a frequency, which is significantly lower than what is predicted by a magnetic vortex based analytical model. Micromagnetic simulations involving dipolar and exchange interactions appear to satisfactorily reproduce the experimentally observed static and dynamic behaviors. Besides providing a physical example of an unconventional topology, these results can also aid the design of topologically protected memory elements.

  18. Device parameter optimization for sub-20 nm node HK/MG-last bulk FinFETs

    Science.gov (United States)

    Miao, Xu; Huaxiang, Yin; Huilong, Zhu; Xiaolong, Ma; Weijia, Xu; Yongkui, Zhang; Zhiguo, Zhao; Jun, Luo; Hong, Yang; Chunlong, Li; Lingkuan, Meng; Peizhen, Hong; Jinjuan, Xiang; Jianfeng, Gao; Qiang, Xu; Wenjuan, Xiong; Dahai, Wang; Junfeng, Li; Chao, Zhao; Dapeng, Chen; Simon, Yang; Tianchun, Ye

    2015-04-01

    Sub-20 nm node bulk FinFET PMOS devices with an all-last high-k/metal gate (HK/MG) process are fabricated and the influence of a series of device parameters on the device scaling is investigated. The high and thin Fin structure with a tapered sidewall shows better performance than the normal Fin structure. The punch through stop layer (PTSL) and source drain extension (SDE) doping profiles are carefully optimized. The device without SDE annealing shows a larger drive current than that with SDE annealing due to better Si crystal regrowth in the amorphous Fin structure after source/drain implantation. The band-edged MG has a better short channel effect immunity, but the lower effective work function (EWF) MG shows a larger driveability. A tradeoff choice for different EWF MGs should be carefully designed for the device's scaling. Project supported by the National 02 IC Projects and the Opening Project of Key Laboratory of Microelectronics Devices & Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences.

  19. Magnetization in a epitaxial [Fe/Cr/Co/Cr]{sub 20x} spin valve system

    Energy Technology Data Exchange (ETDEWEB)

    Bruessing, Frank; Toperverg, Boris; Zhernenkov, Kirill; Wolff, Maximilian; Zabel, Hartmut [Department of Physics, Ruhr-University Bochum (Germany); Theis-Broehl, Katharina [University of Applied Sciences Bremerhaven (Germany); Wiemann, Carsten; Kaiser, Alexander; Schneider, Claus M. [Institut fuer Festkoerperforschung, Forschungszentrum Juelich GmbH (Germany)

    2010-07-01

    Magnetic heterostructures containing different magnetic layers, such as Co and Fe, are essential elements for modern spintronic devices. As a model system we have chosen [Co/Cr/Fe/Cr(100)]{sub 20x} epitaxial superlattices with spin valve properties. The thicknesses of the Fe and Co layers were adjusted such that their magnetization magnitudes are roughly equal. The quality of the layering and the epitaxial relationship were verified via x-ray methods. Via PEEM and PNR the ground state and the magnetization reversal were studied. In this work we mainly focused on the magnetic correlation between Co and Fe mediated by Cr spacer layer and its dependence on the Co bcc-hcp martensitic transition. The alignment between neighboring Co and Fe layers can be recognized via intensity variations of the superlattice Bragg peaks, which are different for odd and even orders. For a certain thickness of the Co and Fe layers in the as grown state additional half-order peaks can be recognized, which indicate a spiral like magnetic ordering in the sample. A combination of the magnetic anisotropy of the different layers and interlayer exchange coupling is most likely the reason for the spiral state.

  20. Efficient reflection grisms for pulse compression and dispersion compensation of femtosecond pulses.

    Science.gov (United States)

    Gibson, Emily A; Gaudiosi, David M; Kapteyn, Henry C; Jimenez, Ralph; Kane, Steve; Huff, Rachel; Durfee, Charles; Squier, Jeff

    2006-11-15

    Efficient reflection grisms for pulse-compression and material-dispersion compensation have been designed and demonstrated in a 40 fs, 300 microJ, 5 kHz downchirped pulse amplification system for the first time to our knowledge. A grism design for 800 nm femtosecond laser pulse dispersion compensation applications is realized by using standard, commercial diffraction gratings.

  1. Background gas collisional effects on expanding fs and ns laser ablation plumes

    Science.gov (United States)

    Harilal, S. S.; Farid, N.; Freeman, J. R.; Diwakar, P. K.; LaHaye, N. L.; Hassanein, A.

    2014-10-01

    The collisional effects of a background gas on expanding ultrafast and short pulse laser ablation plumes were investigated by varying background pressure from vacuum to atmospheric pressure levels. For producing Cu ablation plumes, either 40 fs, 800 nm pulses from a Ti: Sapphire laser or 6 ns, 1,064 nm pulses from a Nd:YAG laser were used. The role of background pressure on plume hydrodynamics, spectral emission features, absolute line intensities, signal to background ratios and ablation craters was studied. Though the signal intensities were found to be maximum near to atmospheric pressure levels, the optimum signal to background ratios are observed ~20-50 Torr for both ns and fs laser ablation plumes. The differences in laser-target and laser-plasma couplings between ns and fs lasers were found to be more engraved in the crater morphologies and plasma hydrodynamic expansion features.

  2. Few-cycle pulse characterization with an acousto-optic pulse shaper.

    Science.gov (United States)

    Cousin, S L; Forget, N; Grün, A; Bates, P K; Austin, Dane R; Biegert, J

    2011-08-01

    An acousto-optic pulse shaper has been used to characterize few-cycle pulses generated in a hollow-core fiber. A grism pair precompensates for the dispersion of the acousto-optic crystal, allowing the full pulse-shaping window to be used for replica generation rather than self-compensation. A 9.4 fs pulse was measured, the shortest ever measured with an acousto-optic pulse shaper, to our knowledge. © 2011 Optical Society of America

  3. Ultrabroadband 50-130 THz pulses generated via phase-matched difference frequency mixing in LiIO3

    OpenAIRE

    Zentgraf, Thomas; Huber, Rupert; Nielsen, Nils C.; Chemla, Daniel S.; Kaindl, Robert A.

    2006-01-01

    We report the generation of ultrabroadband pulses spanning the 50-130 THz frequency range via phase-matched difference frequency mixing within the broad spectrum of sub-10 fs pulses in LiIO_3. Model calculations reproduce the octave-spanning spectra and predict few-cycle THz pulse durations less than 20~;fs. The applicability of this scheme is demonstrated with 9-fs pulses from a Ti:sapphire oscillator and with 7-fs amplified pulses from a hollow fiber compressor as pump sources.

  4. An Advantage of the Equivalent Velocity Spectroscopy for Femtsecond Pulse Radiolysis

    CERN Document Server

    Kondoh, Takafumi; Tagawa, Seiichi; Tomosada, Hiroshi; Yang Jin Feng; Yoshida, Yoichi

    2005-01-01

    For studies of electron beam induced ultra-fast reaction process, femtosecond(fs) pulse radiolysis is under construction. To realize fs time resolution, fs electron and analyzing light pulses and their jitter compensation system are needed. About a 100fs electron pulse was generated by a photocathode RF gun linac and a magnetic pulse compressor. Synchronized Ti: Sapphire laser have a puleswidth about 160fs. And, it is significant to avoid degradation of time resolution caused by velocity difference between electron and analyzing light in a sample. In the 'Equivalent velocity spectroscopy' method, incident analyzing light is slant toward electron beam with an angle associated with refractive index of sample. Then, to overlap light wave front and electron pulse shape, electron pulse shape is slanted toward the direction of travel. As a result of the equivalent velocity spectroscopy for hydrated electrons, using slanted electron pulse shape, optical absorption rise time was about 1.4ps faster than normal electro...

  5. Cavity-less sub-picosecond pulse generation for the demultiplexing of a 640 Gbaud OTDM signal

    DEFF Research Database (Denmark)

    Kong, Deming; Guan, Pengyu; Hu, Hao

    2015-01-01

    A 703 fs cavity-less pulse source based on pulse carving and pulse compression is demonstrated and utilized for demultiplexing a 640 Gbaud OTDM signal. Timing jitter is found to be the main limiting factor.......A 703 fs cavity-less pulse source based on pulse carving and pulse compression is demonstrated and utilized for demultiplexing a 640 Gbaud OTDM signal. Timing jitter is found to be the main limiting factor....

  6. Cross-validation of theoretically quantified fiber continuum generation and absolute pulse measurement by MIIPS for a broadband coherently controlled optical source

    DEFF Research Database (Denmark)

    Tu, H.; Liu, Y.; Lægsgaard, Jesper

    2012-01-01

    source with the MIIPS-integrated pulse shaper produces compressed transform-limited 9.6 fs (FWHM) pulses or arbitrarily shaped pulses at a central wavelength of 1020 nm, an average power over 100 mW, and a repetition rate of 76 MHz. In comparison to the 229-fs pump laser pulses that generate the fiber...

  7. Automatic feature selection using FS-NEAT

    NARCIS (Netherlands)

    Ethembabaoglu, A.; Whiteson, S.

    2008-01-01

    This article describes a series of experiments used to analyze the FS-NEAT method on a double pole-balancing domain. The FS-NEAT method is compared with regular NEAT to discern its strengths and weaknesses. Both FS-NEAT and regular NEAT find a policy, implemented in a neural network, to solve the

  8. Numerical evidence for quadrupolar-octopolar order in RETM{sub 2}(Al,Zi){sub 20}

    Energy Technology Data Exchange (ETDEWEB)

    Attig, Jan [Institute for Theoretical Physics, University of Cologne (Germany); Tse, Darrell; Lee, Eric Kin-Ho; Paramekanti, Arun; Kim, Yong Baek [Department of Physics, University of Toronto, ON (Canada)

    2016-07-01

    Motivated by recent experiments on materials of the type RETM{sub 2}(Al,Zi){sub 20} (where RE is a rare earth and TM a transition metal element) we investigate a minimal model for the pseudo-spin degrees of freedom of the rare earth ions. The model is described by J1-J2 pseudo-spin interactions in three-dimensions where the XY part models quadrupolar order and the Ising part models octopolar order. We use various computational methods such as simulating annealing to find the zero temperature phase digram and investigate further by using single-spin flip Monte Carlo simulations for finite temperature. One notable finding is the existence of non-coplanar spiral ordering of pseudo-spins, which may explain some of the experimental data on the electronic ordering in RETM{sub 2}(Al,Zi){sub 20}.

  9. Synthesis and magnetic characterization of a Cu{sub 80}Co{sub 20} thin film obtained by electrodeposition technique

    Energy Technology Data Exchange (ETDEWEB)

    Bran, Julien; Jean, Malick; Lardé, Rodrigue; Sauvage, Xavier [Groupe de Physique des Matériaux, UMR 6634 CNRS, Université et INSA de Rouen, 76801 St Etienne du Rouvray (France); Breton, Jean-Marie Le, E-mail: jean-marie.lebreton@univ-rouen.fr [Groupe de Physique des Matériaux, UMR 6634 CNRS, Université et INSA de Rouen, 76801 St Etienne du Rouvray (France); Morin-Grognet, Sandrine [Laboratoire de Biophysique et Biomatériaux, MERCI EA 3829, Centre Universitaire d’Evreux, Université de Rouen, 1 rue du 7ème Chasseurs, 27002 Evreux Cedex (France); Pautrat, Alain [Laboratoire Crismat, UMR 6508 CNRS ENSICAEN, 6 boulevard du maréchal Juin, 14050 Caen Cedex (France)

    2014-05-01

    Highlights: • A Cu{sub 80}Co{sub 20} alloy was obtained by low cost electrodeposition. • The structure was investigated down to the atomic scale. • No oxides were formed. • Magnetoresistance is clearly related to superparamagnetic Co nanoparticles. - Abstract: A granular Cu{sub 80}Co{sub 20} alloy was elaborated by a low cost electrodeposition technique consisting in reducing simultaneously the Cu{sup 2+} and Co{sup 2+} ions onto a silicon substrate. The deposition parameters were determined from current-potential curves. The structure of the film was characterized down to the atomic scale by transmission electron microscopy and atom probe tomography. The results show that the as-deposited Cu{sub 80}Co{sub 20} thin film consists mainly of a paramagnetic Cu–Co solid solution containing 10–30% of Co, in which pure Co superparamagnetic nanoparticles are dissolved. Annealing at 500 °C for 1 h leads to the decomposition of the Cu–Co solid solution into purified Cu matrix containing ferromagnetic Co-rich precipitates. The magnetoresistance effect decreases after the heat treatment, in relation with the disappearance of the superparamagnetic Co nanoparticles upon annealing.

  10. Black phosphorus mode-locked sub-100 fs bulk laser based on heterostructured Yb composite crystal

    Science.gov (United States)

    Lou, Fei; Zhang, Baitao; Sun, Shijia; Hu, Chen; Lin, Zhoubin; Jiang, Jieyu; Zhang, Shuaiyi; Wang, Xia; Teng, Bing; He, Jingliang

    2018-01-01

    A physically combined heterostructured (PCH) Yb:KGW/Yb:SYB crystal is used to demonstrate a black phosphorus (BP) mode-locked sub-100 fs bulk laser. Near-transform-limited 75 fs pulses are yielded at 1054.6 nm with an output power of 1.03 W, corresponding to an optical-to-optical efficiency of 10%. This is the first implementation of the PCH concept into a mode-locked Yb-crystal laser to the best of our knowledge. The results not only illustrate the potential of the PCH Yb-crystal as an ideal candidate for realizing ultrafast lasers, but also indicate that BP mode-locking is a very promising approach for generating sub-100 fs pulses from a laser oscillator.

  11. Fiber-coupled high-speed asynchronous optical sampling with sub-50 fs time resolution.

    Science.gov (United States)

    Krauss, N; Nast, A; Heinecke, D C; Kölbl, C; Barros, H G; Dekorsy, T

    2015-02-09

    We present a fiber-coupled pump-probe system with a sub-50 fs time resolution and a nanosecond time window, based on high-speed asynchronous optical sampling. By use of a transmission grism pulse compressor, we achieve pump pulses with a pulse duration of 42 fs, an average power of 300 mW and a peak power exceeding 5 kW at a pulse repetition rate of 1 GHz after 6 m of optical fiber. With this system we demonstrate thickness mapping of soft X-ray mirrors at a sub-nm thickness resolution on a cm(2) scan area. In addition, terahertz field generation with resolved spectral components of up to 3.5 THz at a GHz frequency resolution is demonstrated.

  12. Spectral Compression of Intense Femtosecond Pulses by Self Phase Modulation in Silica Glass

    DEFF Research Database (Denmark)

    Iwaszczuk, Krzysztof; Zhou, Binbin; Bache, Morten

    2012-01-01

    We experimentally demonstrate spectral compression of mJ fs pulses by self phase modulation in silica glass. Spectral narrowing by factor 2.4 of near-transform-limited pulses is shown, with good agreement between experiment and numerical simulation.......We experimentally demonstrate spectral compression of mJ fs pulses by self phase modulation in silica glass. Spectral narrowing by factor 2.4 of near-transform-limited pulses is shown, with good agreement between experiment and numerical simulation....

  13. Pulse shortening of an ultrafast VECSEL

    Science.gov (United States)

    Waldburger, D.; Alfieri, C. G. E.; Link, S. M.; Gini, E.; Golling, M.; Mangold, M.; Tilma, B. W.; Keller, U.

    2016-03-01

    Ultrafast, optically pumped, passively modelocked vertical external-cavity surface-emitting lasers (VECSELs) are excellent sources for industrial and scientific applications that benefit from compact semiconductor based high-power ultrafast lasers with gigahertz repetition rates and excellent beam quality. Applications such as self-referenced frequency combs and multi-photon imaging require sub-200-fs pulse duration combined with high pulse peak power. Here, we present a semiconductor saturable absorber mirror (SESAM) modelocked VECSEL with a pulse duration of 147 fs and 328 W of pulse peak power. The average output power was 100 mW with a repetition rate of 1.82 GHz at a center wavelength of 1034 nm. The laser has optimal beam quality operating in a fundamental transverse mode with a M2 value of strain-compensated InGaAs quantum wells (QWs). The QWs are placed symmetrical around the antinodes of the standing electric field at a reduced average field enhancement in the QWs of ≈ 0.5 (normalized to 4 outside the structure). These results overcome the trade-off between pulse duration and peak power of the state-of-the-art threshold values of 4.35 kW peak power for a pulse duration of 400 fs and 3.3 W peak power for a pulse duration of 107 fs.

  14. Fs = μs Fn

    Directory of Open Access Journals (Sweden)

    Bruno Ministro

    2016-09-01

    Full Text Available http://dx.doi.org/10.5007/1807-9288.2016v12n1p195 Fs = μs Fn é uma releitura a três vozes dos Homeóstatos de José-Alberto Marques. Partindo do desmembramento e recomposição digital do material sonoro, testam-se, com base nas possibilidades oferecidas pelo cruzamento entre a plasticidade vocal e as ferramentas digitais de manipulação, as potencialidades combinatórias que uma obra desta natureza encerra.

  15. Automatic feature selection using FS-NEAT

    OpenAIRE

    Ethembabaoglu, A.; Whiteson, S.

    2008-01-01

    This article describes a series of experiments used to analyze the FS-NEAT method on a double pole-balancing domain. The FS-NEAT method is compared with regular NEAT to discern its strengths and weaknesses. Both FS-NEAT and regular NEAT find a policy, implemented in a neural network, to solve the pole-balancing task by use of genetic algorithms. FS-NEAT, contrary to regular NEAT, uses a different starting population. Whereas regular NEAT networks start out with links between all the inputs an...

  16. Vortex distribution in amorphous Mo{sub 80}Ge{sub 20} plates with artificial pinning center

    Energy Technology Data Exchange (ETDEWEB)

    Matsumoto, Hitoshi [Department of Physics and Electronics, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531 (Japan); Huy, Ho Thanh [Department of Physics and Electronics, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531 (Japan); Department of Physics and Electronics, University of Sciences, Vietnam National University HCMC, 227 Nguyen Van Cu, District 5, HoChiMinh City (Viet Nam); Miyoshi, Hiroki; Okamoto, Takuto; Dang, Vu The [Department of Physics and Electronics, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531 (Japan); Kato, Masaru [Institute for Nanofabrication Research, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531 (Japan); Department of Mathematical Science, Osaka Prefecture University1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531 (Japan); Ishida, Takekazu, E-mail: ishida@center.osakafu-u.ac.jp [Department of Physics and Electronics, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531 (Japan); Institute for Nanofabrication Research, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531 (Japan)

    2016-11-15

    Highlights: • We reveal that the vortex distribution in small amorphous Mo{sub 80}Ge{sub 20} superconducting starshaped plate by using a scanning SQUID microscope. • We find that vortex configuration evolves systematically when the applied magnetic field is changed at the several different fields. • We fabricate an artificial dip by Ar ion milling in a mesoscopic plate, and find this works as a pinning center by comparing the vortex behavior in a sample without pins. - Abstract: Vortices in superconductor give rise to a rich variety of phenomena because they interact with shielding currents, temperature gradients, sample defects, boundaries, and other neighboring vortices. It would be very important to understand particular features of vortex states in a downsized system. Our study focuses on vortex states in small star-shaped Mo{sub 80}Ge{sub 20} plates with and without an artificial pin at the plate center. Vortex states are greatly influenced by the sample geometry, the temperature and the magnetic field, and they can be occasionally exotic compared to the bulk case. We use the amorphous Mo{sub 80}Ge{sub 20} films due to the nature of weak pinning in studying vortex configurations. We applied scanning superconducting quantum interference device (SQUID) microscopy because it enables us to see vortex states directly and it is the most sensitive instrument for mapping tiny local current flows or magnetic moments without damaging the sample. We interpreted that vortex configurations had essentially the nature of mirror reflection symmetry in both cases with an artificial pin and without an artificial pin and pinned cases while the influence of disorder was seen in our observation on the specimen without an artificial pin.

  17. Effect of interface on magnetic properties of Co{sub 20}Fe{sub 60}B{sub 20} in ion-beam sputtered Si/CoFeB/MgO and Si/MgO/CoFeB bilayers

    Energy Technology Data Exchange (ETDEWEB)

    Raju, M., E-mail: rajuhcu519@gmail.com [Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110 016 (India); Chaudhary, Sujeet; Pandya, D.K. [Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110 016 (India)

    2013-04-15

    Effect of interface on magnetic properties of Co{sub 20}Fe{sub 60}B{sub 20} in ion-beam sputtered Si/MgO/CoFeB(top) and Si/CoFeB(bottom)/MgO bilayers is reported. The X-ray reflectivity and magneto-optical Kerr effect analysis revealed that, the interface between bottom MgO and top CoFeB is sensitive to the MgO growth process (post-oxidation, ion-assisted and reactive growth) and its process parameters (assist-ion energy). An increase in interface width from 0.17 nm to 0.47 nm correlates to increase in coercivity from 6 Oe to 34 Oe, decrease of in-plane uniaxial magnetic anisotropy (UMA) from 8×10{sup 3} to 5×10{sup 3} J/m{sup 3} and changes in magnetization reversal. In contrast, the CoFeB(bottom)/MgO interface shows different magnetic behavior and no UMA. - Highlights: ► Dependence of the magnetic response of CoFeB on interface with MgO. ► Growth methods studied for MgO are post-oxidation, reactive and ion-assisted growth. ► Significant amount of in-plane magnetic anisotropy observed for CoFeB(top)/MgO. ► Absence of in-plane magnetic anisotropy in MgO/CoFeB(bottom)

  18. Fs-laser processing of medical grade polydimethylsiloxane (PDMS)

    Energy Technology Data Exchange (ETDEWEB)

    Atanasov, P.A., E-mail: paatanas@ie.bas.bg [Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsaridradsko shose Blvd., Sofia 1784 (Bulgaria); Stankova, N.E.; Nedyalkov, N.N. [Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsaridradsko shose Blvd., Sofia 1784 (Bulgaria); Fukata, N. [International Centre for Materials for NanoArchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1Namiki, Tsukuba 305-0044 (Japan); Hirsch, D.; Rauschenbach, B. [Leibniz Institute of Surface Modification (IOM), Permoserstrasse 15, D-04318 Leipzig (Germany); Amoruso, S.; Wang, X. [Dipartimento di Fisica Università degli Studi di Napoli Federico II and CNR-SPIN, Complesso Universitario di Monte S.Angelo, Via Cintia, I-80126 Napoli (Italy); Kolev, K.N.; Valova, E.I.; Georgieva, J.S.; Armyanov, St.A. [Rostislaw Kaischew Institute of Physical Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Block 11, Sofia 1113 (Bulgaria)

    2016-06-30

    Highlights: • Fs-laser (263, 527 and 1055 nm) processing of PDMS-elastomer is studied. • High quality trenches are produced on the PDMS surface. • The trenches are analyzed by Laser Microscope and by μ-Raman spectrometry. • Selective Ni metallization of the trenches is accomplished via electro-less plating. • The metalized trenches are studied by SEM. - Abstract: Medical grade polydimethylsiloxane (PDMS) elastomer is a biomaterial widely used in medicine and high-tech devices, e.g. MEMS and NEMS. In this work, we report an experimental investigation on femtosecond laser processing of PDMS-elastomer with near infrared (NIR), visible (VIS) and ultraviolet (UV) pulses. High definition trenches are produced by varying processing parameters as laser wavelength, pulse duration, fluence, scanning speed and overlap of the subsequent pulses. The sample surface morphology and chemical composition are investigated by Laser Microscopy, SEM and Raman spectroscopy, addressing the effects of the various processing parameters through comparison with the native materials characteristics. For all the laser pulse wavelengths used, the produced tracks are successfully metalized with Ni via electro-less plating method. We observe a negligible influence of the time interval elapsed between laser treatment and metallization process. Our experimental findings suggest promising perspectives of femtosecond laser pulses in micro- and nano-fabrication of hi-tech PDMS devices.

  19. Transient Newton rings in dielectrics upon fs laser ablation

    CERN Document Server

    Garcia-Lechuga, Mario; Hernandez-Rueda, Javier; Solis, Javier

    2014-01-01

    We report the appearance of transient Newton rings in dielectrics (sapphire and lead-oxide glass) during ablation with single fs laser pulses. Employing femtosecond microscopy with 800 nm excitation and 400 nm illumination, we observe a characteristic ring pattern that dynamically changes for increasing delay times between pump and probe pulse. Such transient Newton rings have been previously observed in metals and semiconductors at fluences above the ablation threshold and were related to optical interference of the probe beam reflected at the front surface of the ablating layer and at the interface of the non-ablating substrate. Yet, it had been generally assumed that this phenomenon cannot be (and has not been) observed in dielectrics due to the different ablation mechanism and optical properties of dielectrics. The fact that we are able to observe them has important consequences for the comprehension of the ablation mechanisms in dielectrics and provides a new method for investigating these mechanisms in ...

  20. Exploiting sub-20-nm complementary metal-oxide semiconductor technology challenges to design affordable systems-on-chip

    Science.gov (United States)

    Vaidyanathan, Kaushik; Zhu, Qiuling; Liebmann, Lars; Lai, Kafai; Wu, Stephen; Liu, Renzhi; Liu, Yandong; Strojwas, Andzrej; Pileggi, Larry

    2015-01-01

    For the past four decades, cost and features have driven complementary metal-oxide semiconductor (CMOS) scaling. Severe lithography and material limitations seen below the 20-nm node, however, are challenging the fundamental premise of affordable CMOS scaling. Just continuing to co-optimize leaf cell circuit and layout designs with process technology does not enable us to exploit the challenges of sub-20-nm CMOS. For affordable scaling, it is imperative to work past sub-20-nm technology impediments while exploiting its features. To this end, we propose to broaden the scope of design technology co-optimization (DTCO) to be more holistic by including microarchitecture design and computer-aided design, along with circuits, layout, and process technology. Furthermore, we undertook such a holistic DTCO for all critical design elements such as embedded memory, standard cell logic, analog components, and physical synthesis in a 14-nm process. Measurements results from experimental designs in a representative 14-nm process from IBM demonstrate the efficacy of the proposed approach.

  1. Inter-diffusion and its correlation with dynamical cross correlation in liquid Ce{sub 80}Ni{sub 20}

    Energy Technology Data Exchange (ETDEWEB)

    Hu, J.L.; Zhong, L.X.; Zhu, C.A.; Zhang, B. [Hefei University of Technology, School of Materials Science and Engineering and Anhui Provincial Key Lab of Functional Materials and Devices, Hefei (China)

    2017-03-15

    We reported the inter-diffusion coefficients in liquid Ce{sub 80}Ni{sub 20} measured by the sliding cell technique. Combined with the self-diffusion data of Ni measured by quasi-elastic neutron scattering in the literature, it was found that the relationship between inter-diffusion and self-diffusion in liquid Ce{sub 80}Ni{sub 20} was strongly deviated from the standard Darken equation with an abnormally small dynamical cross correlation factor S (the so called Manning factor) in a range of 0.6-0.8, less than unity in standard systems. Through the calculated distinct diffusion coefficient and its deviation from the standard one, it was discovered that the small S value was directly originated from enhanced distinct diffusion between Ce and Ni atoms and reduced distinct diffusion between Ni and Ni atoms. Because the inter-atomic interaction was not considered in the standard liquids, the present small S factor and intrinsic distinct diffusion coefficients were believed to be resulted from the chemical interaction between Ce and Ni in the liquid. The results provide new evidence of the dynamic cross correlation in liquid diffusion, and thus shed light on the understanding of the correlation between dynamics and structure in liquid alloys. (orig.)

  2. Magnetic properties of Fe{sub 20} Ni{sub 80} antidots: Pore size and array disorder

    Energy Technology Data Exchange (ETDEWEB)

    Palma, J.L., E-mail: juan.palma.s@usach.cl [Departamento de Física, Universidad de Santiago de Chile (USACH), Avda. Ecuador 3493, 917-0124 Santiago (Chile); Gallardo, C. [Departamento de Física, Universidad de Santiago de Chile (USACH), Avda. Ecuador 3493, 917-0124 Santiago (Chile); Spinu, L.; Vargas, J.M. [Advanced Material Research Institute (AMRI) and Department of Physics, University of New Orleans, New Orleans, LA 70148 (United States); Dorneles, L.S. [Departamento de Fisica, Universidade Federal de Santa Maria UFSM, Av. Roraima 1000, Camobi, Santa Maria, RS 97105-900 (Brazil); Denardin, J.C.; Escrig, J. [Departamento de Física, Universidad de Santiago de Chile (USACH), Avda. Ecuador 3493, 917-0124 Santiago (Chile); Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Avda. Ecuador 3493, 917-0124 Santiago (Chile)

    2013-10-15

    Magnetic properties of nanoscale Fe{sub 20}Ni{sub 80} antidot arrays with different hole sizes prepared on top of nanoporous alumina membranes have been studied by means of magnetometry and micromagnetic simulations. The results show a significant increase of the coercivity as well as a reduction of the remanence of the antidot arrays, as compared with their parent continuous film, which depends on the hole size introduced in the Fe{sub 20}Ni{sub 80} thin film. When the external field is applied parallel to the antidots, the reversal of magnetization is achieved by free-core vortex propagation, whereas when the external field is applied perpendicular to the antidots, the reversal occurs through a process other than the coherent rotation (a maze-like pattern). Besides, in-plane hysteresis loops varying the angle show that the degree of disorder in the sample breaks the expected hexagonal symmetry. - Highlights: • Magnetic properties are strongly influenced by the pore diameter of the samples. • Coercive fields for antidots are higher than the values for the continuous film. • Disorder breaks the hexagonal symmetry of the sample. • Each hole acts as a vortex nucleation point. • Antidots have unique properties that allow them to be used in applications.

  3. Modeling of ablation threshold dependence on pulse duration for dielectrics with ultrashort pulsed laser

    Science.gov (United States)

    Sun, Mingying; Zhu, Jianqiang; Lin, Zunqi

    2017-01-01

    We present a numerical model of plasma formation in ultrafast laser ablation on the dielectrics surface. Ablation threshold dependence on pulse duration is predicted with the model and the numerical results for water agrees well with the experimental data for pulse duration from 140 fs to 10 ps. Influences of parameters and approximations of photo- and avalanche-ionization on the ablation threshold prediction are analyzed in detail for various pulse lengths. The calculated ablation threshold is strongly dependent on electron collision time for all the pulse durations. The complete photoionization model is preferred for pulses shorter than 1 ps rather than the multiphoton ionization approximations. The transition time of inverse bremsstrahlung absorption needs to be considered when pulses are shorter than 5 ps and it can also ensure the avalanche ionization (AI) coefficient consistent with that in multiple rate equations (MREs) for pulses shorter than 300 fs. The threshold electron density for AI is only crucial for longer pulses. It is reasonable to ignore the recombination loss for pulses shorter than 100 fs. In addition to thermal transport and hydrodynamics, neglecting the threshold density for AI and recombination could also contribute to the disagreements between the numerical and the experimental results for longer pulses.

  4. 700 MW peak power of a 380 fs regenerative amplifier with Tm:YAP.

    Science.gov (United States)

    Wienke, Andreas; Wandt, Dieter; Morgner, Uwe; Neumann, Jörg; Kracht, Dietmar

    2015-06-29

    We report on a high power ultrashort pulse regenerative amplifier system, entirely based on thulium-doped laser materials operating around 1.94 μm. At a repetition rate of 1 kHz the Tm:YAP regenerative amplifier emits pulse energies > 700 μJ, only limited by the damage threshold of the Tm:YAP crystal. The pulses can be compressed to 380 fs at an efficiency of 50 %. Purging of the regenerative amplifier cavity with nitrogen is necessary due to atmospheric absorptions causing long ps pedestals in the autocorrelation.

  5. Femtosecond laser ablation of silver foil with single and double pulses

    CSIR Research Space (South Africa)

    Roberts, DE

    2009-01-01

    Full Text Available The average ablation depth per pulse of silver foil by 130 fs laser pulses has been measured in vacuum over a range of three orders of magnitude of pulse fluence up to 900 J cm_2. In addition, double pulses with separations up to 3.4 ns have been...

  6. Femtosecond laser ablation of silver foil with single and double pulses

    CSIR Research Space (South Africa)

    Roberts, DE

    2009-01-01

    Full Text Available The average ablation depth per pulse of silver foil by 130 fs laser pulses has been measured in vacuum over a range of three orders of magnitude of pulse fluence up to 900 J cm-2. In addition, double pulses with separations up to 3.4 ns have been...

  7. Pulse Compression of Phase-matched High Harmonic Pulses from a Time-Delay Compensated Monochromator

    Directory of Open Access Journals (Sweden)

    Ito Motohiko

    2013-03-01

    Full Text Available Pulse compression of single 32.6-eV high harmonic pulses from a time-delay compensated monochromator was demonstrated down to 11±3 fs by compensating the pulse front tilt. The photon flux was intensified up to 5.7×109 photons/s on target by implementing high harmonic generation under a phase matching condition in a hollow fiber used for increasing the interaction length.

  8. Long-term marker-free multiphoton imaging, targeted transfection, optical cleaning of stem cell clusters, and optical transport of microRNA with extreme ultrashort laser pulses

    Science.gov (United States)

    Uchugonova, Aisada; Földes-Papp, Zeno; Kostner, Gerhard M.; König, Karsten

    2010-02-01

    The novel utrashort femtosecond laser scanning microscope FemtOgene (JenLab GmbH, Germany) with 12 femtoseconds at the focal plane have been employed in marker-free imaging and optical manipulation of stem cells as well as for the non-contact introduction of microRNA in cancer cells. Human adult pancreatic stem cells, salivary gland stem cells, and human dental pulp stem cells have been investigated by femtosecond laser multiphoton microscopy. Autofluorescence based on NAD(P)H and flavoproteins and second harmonic generation due to collagen have been imaged with submicron spatial resolution, 270 ps temporal resolution, and 10 nm spectral resolution. Major emission peaks at 460 nm and 530 nm with typical mean fluorescence lifetimes of 1.8 ns and 2.0 ns, respectively, were measured in a variety of stem cells using spectral imaging and time-correlated single photon counting. During differentiation, the ratios of bound to free NAD(P)H and NAD(P)H/flavoproteins changed. In addition, the biosynthesis of lipids and collagen was detected over a long period of time of up to 5 weeks. Nanoprocessing was performed with 12 femtosecond laser pulses and low picojoule pulse energies to realize targeted transfection and optical cleaning of human adult stem cell populations. Multiphoton sub-20fs microscopes may become novel non-invasive tools for marker-free optical stem cell characterization, for on-line monitoring of differentiation within a three-dimensional microenvironment, and for optical manipulation.

  9. Application of ultrashort laser pulses for intrastromal refractive surgery.

    Science.gov (United States)

    Lubatschowski, H; Maatz, G; Heisterkamp, A; Hetzel, U; Drommer, W; Welling, H; Ertmer, W

    2000-01-01

    Recently, laser systems have become available which generate ultrashort laser pulses with a duration of 100-200 femtoseconds (fs). By generating micro-plasmas inside the corneal stroma with fs pulses, it is possible to achieve a cutting effect inside the tissue while leaving the anterior layers intact. The energy threshold to generate a micro-plasma with fs pulses is some orders of magnitude lower than it is for picosecond or nanosecond pulses. This results in a strong reduction of the thermal and mechanical damage of the surrounding tissue. With a titanium:sapphire fs laser system, the cutting effect on corneal tissue from freshly enucleated porcine eye globes was investigated with different pulse energies. The irradiated samples were examined by light and electron microscopy. The laser-induced pressure transients and the laser-induced bubble formation were analysed with a broadband acoustic transducer and by flash photography. With fs laser pulses, the extent of thermal and mechanical damage of the adjacent tissue is in the order of 1 microm or below and therefore comparable with the tissue alterations after ArF excimer laser ablation. Using pulse energies of approximately 1-2 microJ and a spot diameter of 5-10 microm, intrastromal cuts can be performed very precisely in order to prepare corneal flaps and lenticules. Femtosecond photodisruption has the potential to become an attractive tool for intrastromal refractive surgery.

  10. Energy scaling of Yb fiber oscillator producing clusters of femtosecond pulses

    Science.gov (United States)

    Nie, Bai; Parker, Greg; Lozovoy, Vadim Vadimovich; Dantus, Marcos

    2014-05-01

    A Yb fiber oscillator producing high-energy femtosecond pulse clusters is reported. Visualized by averaging autocorrelation, the output pulses consist of femtosecond pulse clusters that appear as a picosecond envelope with a ˜100-fs pulse in its center. Using more than 200-m fiber, the pulse energy is scaled up to 450 nJ. This high energy in a cluster of femtosecond pulses enables an important application-laser-induced breakdown spectroscopy.

  11. Description of pulse propagation in a dispersive medium by use of a pulse quality factor.

    Science.gov (United States)

    Rousseau, Guy; McCarthy, Nathalie; Pichãé, Michel

    2002-09-15

    We investigated how the duration of short laser pulses evolves in a dispersive material, using rms widths and a propagation law based on a pulse quality factor. Experiments were carried out with femtosecond pulses (10 to 25fs at the temporal waist) propagating in bulk fused silica. Excellent agreement was found between theory and experiment. This approach does not require complete characterization of laser pulses and eliminates the need for any assumption regarding the interpretation of autocorrelation traces. The method is of general validity, and it can be applied to pulses of arbitrary shape.

  12. Femtosecond and nanosecond pulsed laser deposition of silicon and germanium

    Energy Technology Data Exchange (ETDEWEB)

    Reenaas, Turid Worren [Department of Physics, Norwegian University of Science and Technology, 7491 Trondheim (Norway); Lee, Yen Sian [Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur (Malaysia); Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia); Chowdhury, Fatema Rezwana; Gupta, Manisha; Tsui, Ying Yin [Department of Electrical and Computer Engineering, University of Alberta (Canada); Tou, Teck Yong [Faculty of Engineering, Multimedia University, 63100 Cyberjaya, Selangor (Malaysia); Yap, Seong Ling [Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia); Kok, Soon Yie [Faculty of Engineering, Multimedia University, 63100 Cyberjaya, Selangor (Malaysia); Yap, Seong Shan, E-mail: seongshan@gmail.com [Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur (Malaysia)

    2015-11-01

    Highlights: • Ge and Si were deposited by fs and ns laser at room temperature and at vacuum. • Ion of 10{sup 4} ms{sup −1} and 30–200 eV was obtained for ns ablation for Ge and Si. • Highly energetic ions of 10{sup 5} ms{sup −1} with 2–7 KeV were produced in fs laser ablation. • Nanocrystalline Si and Ge were deposited by using fs laser. • Nanoparticles < 10 nm haven been obtained by fs laser. - Abstract: 150 fs Ti:Sapphire laser pulsed laser deposition of Si and Ge were compared to a nanosecond KrF laser (25 ns). The ablation thresholds for ns lasers were about 2.5 J cm{sup −2} for Si and 2.1 J cm{sup −2} for Ge. The values were about 5–10 times lower when fs laser were used. The power densities were 10{sup 8}–10{sup 9} W cm{sup −2} for ns but 10{sup 12} W cm{sup −2} for fs. By using an ion probe, the ions emission at different fluence were measured where the emitting ions achieving the velocity in the range of 7–40 km s{sup −1} and kinetic energy in the range of 30–200 eV for ns laser. The ion produced by fs laser was measured to be highly energetic, 90–200 km s{sup −1}, 2–10 KeV. Two ion peaks were detected above specific laser fluence for both ns and fs laser ablation. Under fs laser ablation, the films were dominated by nano-sized crystalline particles, drastically different from nanosecond pulsed laser deposition where amorphous films were obtained. The ions characteristics and effects of pulse length on the properties of the deposited films were discussed.

  13. USAARL NUH-60FS Acoustic Characterization

    Science.gov (United States)

    2016-11-01

    Aeromedical Research Laboratory 2Laulima Government Solutions, LLC 3Oak Ridge Institute for Science and Education United States Army Aeromedical Research...74.8 98.8 The NUH-60FS has been upgraded since the previous characterization, and these upgrades may have affected the ambient noise levels. The... ambient noise levels of the NUH-60FS while operating can be controlled via either software or hardware adjustments. The new data collected looked at the

  14. Gibberellin A sub 3 is biosynthesized from gibberellin A sub 20 via gibberellin A sub 5 in shoots of Zea mays L

    Energy Technology Data Exchange (ETDEWEB)

    Fujioka, Shozo; Spray, C.R.; Phinney, B.O. (Univ. of California, Los Angeles (USA)); Gaskin, P.; MacMillan, J. (Univ. of Bristol (England)); Yamane, Hisakazu (Univ. of California, Los Angeles (USA) Univ. of Tokyo (Japan)); Takahashi, Nobutaka (Univ. of Tokyo (Japan))

    1990-09-01

    (17-{sup 13}C, {sup 3}H)-Labeled gibberellin A{sub 20} (GA{sub 20}), GA{sub 5}, and GA{sub 1} were fed to homozygous normal (+/+), heterozygous dominant dwarf (D8/+), and homozygous dominant dwarf (D8/D8) seedlings of Zea mays L. (maize). {sup 13}C-Labeled GA{sub 29}, GA{sub 8}, GA{sub 5}, GA{sub 1}, and 3-epi-GA{sub 1}, as well as unmetabolized ({sup 13}C)GA{sub 20}, were identified by gas chromatography-selected ion monitoring (GC-SIM) from feeds of (17-{sup 13}C, {sup 3}H)GA{sub 20} to all three genotypes. {sup 13}C-Labeled GA{sub 8} and 3-epi-G{sub 1}, as well as unmetabolized ({sup 13}C)GA{sub 1}, were identified by GC-SIM from feeds of (17-{sup 13}C, {sup 3}H)GA{sub 1} to all three genotypes. From feeds of (17-{sup 13}C, {sup 3}H)GA{sub 5}, {sup 13}C-labeled GA{sub 3} and the GA{sub 3}-isolactone, as well as unmetabolized ({sup 13}C)GA{sub 5}, were identified by GC-SIM from +/+ and D8/D8, and by full scan GC-MS from D8/+. No evidence was found for the metabolism of (17-{sup 13}C, {sup 3}H)GA{sub 5} to ({sup 13}C)GA{sub 1}, either by full scan GC-mass spectrometry or by GC-SIM. The results demonstrate the presence in maize seedlings of three separate branches from GA{sub 20}, as follows: (a) GA{sub 20} {yields} GA{sub 1} {yields} GA{sub 8}; (b) GA{sub 20} {yields} GA{sub 5} {yields} GA{sub 3}; and (c) GA{sub 20} {yields} GA{sub 29}. The in vivo biogenesis of GA{sub 3} from GA{sub 5}, as well as the origin of GA{sub 5} from GA{sub 20}, are conclusively established for the first time in a higher plant (maize shoots).

  15. Sub-100 fs single-walled carbon nanotube saturable absorber mode-locked Yb-laser operation near 1 microm.

    Science.gov (United States)

    Schmidt, Andreas; Rivier, Simon; Cho, Won Bae; Yim, Jong Hyuk; Choi, Sun Young; Lee, Soonil; Rotermund, Fabian; Rytz, Daniel; Steinmeyer, Günter; Petrov, Valentin; Griebner, Uwe

    2009-10-26

    Transmission- and reflection-type single-walled carbon nanotube saturable absorbers (SWCNT-SAs) were designed and fabricated for passive mode-locking of bulk lasers in the 1 microm spectral range. Mode-locked laser operation based on a diffusion-bonded Yb:KYW/KYW crystal was demonstrated, and pulses as short as 83 fs and 140 fs were achieved applying reflection-type and transmission-type SWCNT-SA, respectively. The nonlinear parameters of the absorbers were measured to be in close vicinity to those of a semiconductor saturable absorber mirror for the same wavelength range. Mode-locking performance with SWCNT-SAs and the SESAM was compared utilizing the same cavity, with the SESAM resulting in only slightly shorter pulses of 66 fs duration. The nearly identical performance indicates that well-optimized SWCNT-SAs can substitute SESAMs even in the 1 microm region.

  16. Control of ultrafast pulse propagation in semiconductor components

    DEFF Research Database (Denmark)

    Poel, Mike van der; Hansen, Per Lunnemann; Mørk, Jesper

    2009-01-01

    Time shifting of optical pulses with duration in the range from 100 fs to a few ps represents one extreme of slow light, where THz bandwidth for the slow down or speed up is necessary. The physics of the time shifting of such very short pulses involves the gain saturation of the optical medium...

  17. Structure and photocatalytic properties of Nb-doped Bi{sub 12}TiO{sub 20} prepared by the oxidant peroxide method (OPM)

    Energy Technology Data Exchange (ETDEWEB)

    Nogueira, André E., E-mail: andreesteves86@hotmail.com; Lima, Alan R. F., E-mail: alan_rogerio2000@yahoo.com.br [UFSCar-Universidade Federal de São Carlos, LIEC-Laboratório Interdisciplinar de Eletroquímica e Cerâmica, Departamento de Química (Brazil); Longo, Elson, E-mail: elson@iq.unesp.br [UNESP-Universidade Estadual Paulista, Instituto de Química de Araraquara (Brazil); Leite, Edson R., E-mail: edson.leite@pq.cnpq.br; Camargo, Emerson R., E-mail: camargo@ufscar.br [UFSCar-Universidade Federal de São Carlos, LIEC-Laboratório Interdisciplinar de Eletroquímica e Cerâmica, Departamento de Química (Brazil)

    2014-12-15

    Pure (Bi{sub 12}TiO{sub 20}) and niobium-doped (Bi{sub 12}Ti{sub 1−x}Nb{sub x}O{sub 20}, with “x” up to 0.15) bismuth titanates were prepared by the oxidant peroxide method (OPM) and used to photodegradate rhodamine b (RhB) under UV and visible radiation. Rietveld refinements showed samples consisting mainly of sillenite structure with small amounts of a perovskite secondary phase in the Nb-doped materials. These bismuth-based catalysts exhibited superior performance than the commercial TiO{sub 2}, with band gaps ranging from 2.53 of pure Bi{sub 12}TiO{sub 20} to 2.73 eV depending on the amount of niobium added, which seems to be responsible for the improved photoactivity of the doped catalysts under UV radiation.

  18. Passively mode-locked glass waveguide laser with 14-fs timing jitter.

    Science.gov (United States)

    Schlager, John B; Callicoatt, Berton E; Mirin, Richard P; Sanford, Norman A; Jones, David J; Ye, Jun

    2003-12-01

    Ultralow jitter pulse trains are produced from a passively mode-locked, erbium/ytterbium co-doped, planar waveguide laser by use of high-bandwidth feedback control acting on the physical cavity length and optical pump power. Synchronization of a 750-MHz, fundamentally mode-locked laser to an external clock signal yields an ultralow, root-mean-square relative timing jitter of 14.4 fs integrated from 10 Hz to the Nyquist frequency of 375 MHz.

  19. Hybrid fs/ps CARS for Sooting and Particle-laden Flames [PowerPoint

    Energy Technology Data Exchange (ETDEWEB)

    Hoffmeister, Kathryn N. Gabet; Guildenbecher, Daniel Robert; Kearney, Sean P.

    2016-01-01

    We report the application of ultrafast rotational coherent anti-Stokes Raman scattering (CARS) for temperature and relative oxygen concentration measurements in the plume emanating from a burning aluminized ammonium perchlorate propellant strand. Combustion of these metal-based propellants is a particularly hostile environment for laserbased diagnostics, with intense background luminosity, scattering and beam obstruction from hot metal particles that can be as large as several hundred microns in diameter. CARS spectra that were previously obtained using nanosecond pulsed lasers in an aluminumparticle- seeded flame are examined and are determined to be severely impacted by nonresonant background, presumably as a result of the plasma formed by particulateenhanced laser-induced breakdown. Introduction of fs/ps laser pulses enables CARS detection at reduced pulse energies, decreasing the likelihood of breakdown, while simultaneously providing time-gated elimination of any nonresonant background interference. Temperature probability densities and temperature/oxygen correlations were constructed from ensembles of several thousand single-laser-shot measurements from the fs/ps rotational CARS measurement volume positioned within 3 mm or less of the burning propellant surface. Preliminary results in canonical flames are presented using a hybrid fs/ps vibrational CARS system to demonstrate our progress towards acquiring vibrational CARS measurements for more accurate temperatures in the very high temperature propellant burns.

  20. Hybrid fs/ps CARS for Sooting and Particle-laden Flames

    Energy Technology Data Exchange (ETDEWEB)

    Hoffmeister, Kathryn N. Gabet; Guildenbecher, Daniel Robert; Kearney, Sean P.

    2015-12-01

    We report the application of ultrafast rotational coherent anti-Stokes Raman scattering (CARS) for temperature and relative oxygen concentration measurements in the plume emanating from a burning aluminized ammonium perchlorate propellant strand. Combustion of these metal-based propellants is a particularly hostile environment for laserbased diagnostics, with intense background luminosity, scattering and beam obstruction from hot metal particles that can be as large as several hundred microns in diameter. CARS spectra that were previously obtained using nanosecond pulsed lasers in an aluminumparticle- seeded flame are examined and are determined to be severely impacted by nonresonant background, presumably as a result of the plasma formed by particulateenhanced laser-induced breakdown. Introduction of fs/ps laser pulses enables CARS detection at reduced pulse energies, decreasing the likelihood of breakdown, while simultaneously providing time-gated elimination of any nonresonant background interference. Temperature probability densities and temperature/oxygen correlations were constructed from ensembles of several thousand single-laser-shot measurements from the fs/ps rotational CARS measurement volume positioned within 3 mm or less of the burning propellant surface. Preliminary results in canonical flames are presented using a hybrid fs/ps vibrational CARS system to demonstrate our progress towards acquiring vibrational CARS measurements for more accurate temperatures in the very high temperature propellant burns.

  1. Controllable delay of ultrashort pulses in a quantum dot optical amplifier

    DEFF Research Database (Denmark)

    Poel, Mike van der; Mørk, Jesper; Hvam, Jørn Märcher

    2005-01-01

    Optical and electrical tuning of the propagation time of 170 fs pulses in a quantum dot semiconductor amplifier at room temperature is demonstrated. Both pulse slowdown and advancement is possible and we achieve fractional delays (delay divided with pulse duration) of up to 40%. The results...... are explained by a simple gain saturation model....

  2. Fiber-Optical Parametric Amplification of Sub-Picosecond Pulses for High-Speed Optical Communications

    DEFF Research Database (Denmark)

    Lali-Dastjerdi, Zohreh; Cristofori, Valentina; Rottwitt, Karsten

    2015-01-01

    This article reviews recent results of amplification of short optical pulses using fiber-optical parametric amplifiers. This includes chirped-pulse amplification of 400 fs pulses, error-free amplification of a 640-Gbit/s optical time-division multiplexed signal with less than a 1-dB power penalty...

  3. A grating-less, fiber-based oscillator that generates 25 nJ pulses

    Energy Technology Data Exchange (ETDEWEB)

    An, J; Kim, D; Dawson, J W; Messerly, M J; Barty, C J

    2006-12-28

    We report a passively mode-locked fiber-based oscillator that has no internal dispersion-compensating gratings. This design, the first of its kind, produces 25 nJ pulses at 80 MHz with the pulses compressible to 150 fs. The pulses appear to be self-similar and initial data imply that their energy is further scalable.

  4. 70-fs mode-locked erbium-doped fiber laser with topological insulator.

    Science.gov (United States)

    Liu, Wenjun; Pang, Lihui; Han, Hainian; Tian, Wenlong; Chen, Hao; Lei, Ming; Yan, Peiguang; Wei, Zhiyi

    2016-01-27

    Femtosecond optical pulses have applications in optical communication, astronomical frequency combs, and laser spectroscopy. Here, a hybrid mode-locked erbium-doped fiber (EDF) laser with topological insulator (TI) is proposed, for the first time to our best knowledge. The pulsed laser deposition (PLD) method is employed to fabricate the fiber-taper TI saturable absorber (TISA). By virtue of the fiber-taper TISA, the hybrid EDF laser is passively mode-locked using the nonlinear polarization evolution (NPE), and emits 70 fs pulses at 1542 nm, whose 3 dB spectral width is 63 nm with a repetition rate and transfer efficiency of 95.4 MHz and 14.12%, respectively. Our experiments indicate that the proposed hybrid mode-locked EDF lasers have better performance to achieve shorter pulses with higher power and lower mode-locking threshold in the future.

  5. 152 fs nanotube-mode-locked thulium-doped all-fiber laser

    Science.gov (United States)

    Wang, Jinzhang; Liang, Xiaoyan; Hu, Guohua; Zheng, Zhijian; Lin, Shenghua; Ouyang, Deqin; Wu, Xu; Yan, Peiguang; Ruan, Shuangchen; Sun, Zhipei; Hasan, Tawfique

    2016-01-01

    Ultrafast fiber lasers with broad bandwidth and short pulse duration have a variety of applications, such as ultrafast time-resolved spectroscopy and supercontinuum generation. We report a simple and compact all-fiber thulium-doped femtosecond laser mode-locked by carbon nanotubes. The oscillator operates in slightly normal cavity dispersion at 0.055 ps2, and delivers 152 fs pulses with 52.8 nm bandwidth and 0.19 nJ pulse energy. This is the shortest pulse duration and the widest spectral width demonstrated from Tm-doped all-fiber lasers based on 1 or 2 dimensional nanomaterials, underscoring their growing potential as versatile saturable absorber materials. PMID:27374764

  6. Ultrasonic investigation close to quantum critical point in YbTr{sub 2}Zn{sub 20} (Tr: Co, Rh, and Ir)

    Energy Technology Data Exchange (ETDEWEB)

    Nakanishi, Y; Kamiyama, T; Ito, K; Nakamura, M; Yoshizawa, M [Graduate School of Engineering, Iwate University, Morioka 020-8551 (Japan); Saiga, Y [Graduate School of Advanced Sciences of Matter, Hiroshima University, HigashiHiroshima 739-8530 (Japan); Kosaka, M [Department of Physics, Saitama University, Saitama 338-8570 (Japan); Uwatoko, Y, E-mail: yoshiki@iwate-u.ac.j [Institute for Solid State Physics, University of Tokyo, Kashiwa 227-8581 (Japan)

    2010-01-15

    We performed ultrasonic measurements on high quality single crystals of the Yb-based heavy fermion compounds YbTr{sub 2}Zn{sub 20} (Tr: Co, Rh and Ir) over a temperature range from 200 K to 0.5 K, which seem to be close to a quantum critical point (QCP). A sharp contrast of the temperature dependence of elastic constants was found at low temperature among the three compounds, reflecting the 4f electronic state stemmed from Yb ion. The results indicate that a crystalline electric field (CEF) effect seems to be dominant in the systems YbRh{sub 2}Zn{sub 20} and YbIr{sub 2}Zn{sub 20} at low temperatures. On the other hand, the CEF effect is much less, but an additional effect would be dominant which is most probably ascribable to non Fermi liquid characteristics formed close to the QCP. We discuss briefly each 4f electronic state developed at the low temperatures and physical parameters relating to a renormalized band model in YbTr{sub 2}Zn{sub 20} in the framework of a deformation potential approximation.

  7. Femtosecond laser pulses for chemical-free embryonic and mesenchymal stem cell differentiation

    CSIR Research Space (South Africa)

    Mthunzi, P

    2011-08-01

    Full Text Available . Femtosecond (fs) laser pulses have been reported to non-invasively deliver exogenous materials, including foreign genetic species into both multipotent and pluripotent stem cells successfully. Through this multi-photon facilitated technique, directly...

  8. Sub-100  fs Tm:MgWO4 laser at 2017  nm mode locked by a graphene saturable absorber.

    Science.gov (United States)

    Wang, Yicheng; Chen, Weidong; Mero, Mark; Zhang, Lizhen; Lin, Haifeng; Lin, Zhoubin; Zhang, Ge; Rotermund, Fabian; Cho, Young Jun; Loiko, Pavel; Mateos, Xavier; Griebner, Uwe; Petrov, Valentin

    2017-08-15

    We present the first sub-100 fs bulk solid-state laser in the 2-μm spectral range employing the monoclinic Tm3+-dopedMgWO4 crystal as an active medium. By applying a graphene-based saturable absorber and chirped mirrors for dispersion management, stable self-starting mode-locked operation at 2017 nm was achieved. Nearly Fourier-limited pulses as short as 86 fs featuring a bandwidth of 53 nm were generated at a repetition rate of 76 MHz. A pulse energy of 1.1 nJ was achieved at 87 MHz for a pulse duration of 96 fs. The mode-locked Tm3+:MgWO4 laser exhibits excellent stability with a fundamental beat note extinction ratio of 80 dBc above noise level.

  9. High-power 200 fs Kerr-lens mode-locked Yb:YAG thin-disk oscillator.

    Science.gov (United States)

    Pronin, O; Brons, J; Grasse, C; Pervak, V; Boehm, G; Amann, M-C; Kalashnikov, V L; Apolonski, A; Krausz, F

    2011-12-15

    We demonstrate a power-scalable Kerr-lens mode-locked Yb:YAG thin-disk oscillator. It delivers 200 fs pulses at an average power of 17 W and a repetition rate of 40 MHz. At an increased (180 W) pump power level, the laser produces 270 fs 1.1 μJ pulses at an average power of 45 W (optical-to-optical efficiency of 25%). Semiconductor-saturable-absorber-mirror-assisted Kerr-lens mode locking (KLM) and pure KLM with a hard aperture show similar performance. To our knowledge, these are the shortest pulses achieved from a mode-locked Yb:YAG disk oscillator and this is the first demonstration of a Kerr-lens mode-locked thin-disk laser.

  10. Bidirectional operation of 100 fs bound solitons in an ultra-compact mode-locked fiber laser.

    Science.gov (United States)

    Li, Lei; Ruan, Qiujun; Yang, Runhua; Zhao, Luming; Luo, Zhengqian

    2016-09-05

    We report on the experimental observation of bidirectional 100-fs bound solitons from a nanotube-mode-locked dispersion-managed Er-fiber laser with an ultra-simple linear cavity. Two mode-locked pulse trains in opposite directions are delivered simultaneously from the linear cavity. Under the pump power of <74 mW, both the bidirectional outputs of the laser work at the single-soliton state with pulse duration of 173 fs and 182 fs, respectively. Once the pump power is more than 74 mW, both the bidirectional outputs evolve into the two-soliton bound states with soliton separation of 1.53 ps. Interestingly, the bidirectional operations can show the different bound states, i.e. the forward bound solitons with phase difference of + π/2, and the backward ones with phase difference of -π/2. This is, to the best of our knowledge, the first demonstration of such compact bidirectional soliton fiber laser with the sub-200 fs pulses.

  11. Disclosing intrinsic molecular dynamics on the 1-fs scale through extreme-ultraviolet pump-probe measurements

    Science.gov (United States)

    Carpeggiani, P. A.; Tzallas, P.; Palacios, A.; Gray, D.; Martín, F.; Charalambidis, D.

    2014-02-01

    Through frequency up-conversion of polarization-shaped, femtosecond laser pulses nonlinearly interacting with xenon atoms, energetic, broadband, coherent, XUV continuum radiation is generated. By exploiting the thus-formed short-duration XUV pulses, all the optically allowed excited states of H2 are coherently populated. Nuclear and electronic 1-fs-scale dynamics are subsequently investigated by means of XUV-pump-XUV-probe measurements, which are compared to the results of ab initio calculations. The revealed dynamics reflects the intrinsic molecular behavior, as the XUV probe pulse hardly distorts the molecular potential.

  12. Optimal generation of pulsed entangled photon pairs

    Science.gov (United States)

    Hodelin, Juan F.; Khoury, George; Bouwmeester, Dirk

    2006-07-01

    We experimentally investigate a double-pass parametric down-conversion scheme for producing pulsed, polarization-entangled photon pairs with high visibility. The amplitudes for creating photon pairs on each pass interfere to compensate for distinguishing characteristics that normally degrade two-photon visibility. The result is a high-flux source of polarization-entangled photon pulses that does not require spectral filtering. We observe quantum interference visibility of over 95% without the use of spectral filters for 200fs pulses, and up to 98.1% with 5nm bandwidth filters.

  13. Pressure Monitoring Using Hybrid fs/ps Rotational CARS

    Science.gov (United States)

    Kearney, Sean P.; Danehy, Paul M.

    2015-01-01

    We investigate the feasibility of gas-phase pressure measurements at kHz-rates using fs/ps rotational CARS. Femtosecond pump and Stokes pulses impulsively prepare a rotational Raman coherence, which is then probed by a high-energy 6-ps pulse introduced at a time delay from the Raman preparation. Rotational CARS spectra were recorded in N2 contained in a room-temperature gas cell for pressures from 0.1 to 3 atm and probe delays ranging from 10-330 ps. Using published self-broadened collisional linewidth data for N2, both the spectrally integrated coherence decay rate and the spectrally resolved decay were investigated as means for detecting pressure. Shot-averaged and single-laser-shot spectra were interrogated for pressure and the accuracy and precision as a function of probe delay and cell pressure are discussed. Single-shot measurement accuracies were within 0.1 to 6.5% when compared to a transducer values, while the precision was generally between 1% and 6% of measured pressure for probe delays of 200 ps or more, and better than 2% as the delay approached 300 ps. A byproduct of the pressure measurement is an independent but simultaneous measurement of the gas temperature.

  14. The Three Fs of Classroom Management

    Science.gov (United States)

    Daniels, Mark L.

    2009-01-01

    This article describes a cohesive theory of classroom management, developed by the author. This "three Fs" theory, predicated upon extant empiricism and scholarship vis-a-vis classroom management, was devised and implemented over several semesters within a field-based course at the University of Texas at Austin for preservice mathematics majors…

  15. Optic fiber pulse-diagnosis sensor of traditional Chinese medicine

    Science.gov (United States)

    Ni, J. S.; Jin, W.; Zhao, B. N.; Zhang, X. L.; Wang, C.; Li, S. J.; Zhang, F. X.; Peng, G. D.

    2013-09-01

    The wrist-pulse is a kind of signals, from which a lot of physiological and pathological status of patients are deduced according to traditional Chinese medicine theories. This paper designs a new optic fiber wrist-pulse sensor that based on a group of FBGs. Sensitivity of the optic fiber wrist-pulse measurement system reaches 0.05% FS and the range reaches 50kPa. Frequency response is from 0 Hz to 5 kHz. A group of typical pulse signal is given out in the paper to compare different status of patient. It will improve quantification of pulse diagnosis greatly.

  16. Análise epidemiológica de lesões no futebol de salão durante o XV Campeonato Brasileiro de Seleções Sub 20 Análisis epidemiológico de las lesiones en el fútbol de salón durante el XV Campeonato Brasileño de Selecciones Sub 20 Epidemiologic analysis of injuries occurred during the 15th Brazilian Indoor Soccer (Futsal) Sub20 Team Selection Championship

    OpenAIRE

    Rodrigo Nogueira Ribeiro; Leonardo Oliveira Pena Costa

    2006-01-01

    INTRODUÇÃO: Vários autores têm investigado a incidência de lesões no futebol. Entretanto, poucos trabalhos têm analisado as lesões no Futebol de Salão. O objetivo deste estudo foi analisar a incidência, circunstâncias e características das lesões registradas no Futebol de Salão durante o XV Campeonato Brasileiro de Futebol de Salão Sub 20. MÉTODOS: Fisioterapeutas ou médicos de todas as seleções participantes do XV Campeonato Brasileiro de Futebol de Salão Sub 20 responderam a um questionário...

  17. Capillary compressor of femtosecond laser pulses with nonlinear rotation of polarisation ellipse

    Energy Technology Data Exchange (ETDEWEB)

    Konyashchenko, Aleksandr V; Kostryukov, P V; Losev, Leonid L; Tenyakov, S Yu

    2012-03-31

    The process of nonlinear rotation of the polarisation ellipse of laser radiation, occurring simultaneously with the broadening of the pulse spectrum due to nonlinear self-phase modulation in a gas-filled capillary, is studied. It is shown that the maximal rotation of the polarisation ellipse is experienced by the spectral components, shifted towards the short-wavelength side with respect to the central wavelength of the initial laser pulse. Using the effect of polarisation ellipse rotation, an eightfold increase in the energy contrast ratio of a 28-fs light pulse, obtained by compression of the radiation pulse from an ytterbium laser with the duration 290 fs, is implemented.

  18. Autocorrelation measurement of fast electron pulses emitted through the interaction of femtosecond laser pulses with a solid target.

    Science.gov (United States)

    Inoue, Shunsuke; Tokita, Shigeki; Otani, Kazuto; Hashida, Masaki; Hata, Masayasu; Sakagami, Hitoshi; Taguchi, Toshihiro; Sakabe, Shuji

    2012-11-02

    We report the first direct measurement of the emission duration of laser-accelerated fast electrons from the surface of a solid target irradiated by a high-intensity femtosecond laser pulse. The emission duration is determined by autocorrelation measurement using the Coulomb repulsive forces that act on two equivalent electron pulses. The emission duration depends on the laser pulse duration for laser pulses of 200-690 fs. Numerical modeling of three-dimensional charged particle dynamics indicates that the emission duration of fast electrons is almost equal to the duration of the laser pulse.

  19. Pulse on Pulse

    DEFF Research Database (Denmark)

    Schmidt, Ulrik; Carlson, Merete

    2012-01-01

    of the visitor’s beating heart to the blink of a fragile light bulb, thereby transforming each light bulb into a register of individual life. But at the same time the blinking light bulbs together produce a chaotically flickering light environment composed by various layers of repetitive rhythms, a vibrant...... and pulsating ‘room’. Hence, the visitors in Pulse Room are invited into a complex scenario that continuously oscillates between various aspects of signification (the light bulbs representing individual lives; the pulse itself as the symbolic ‘rhythm of life’) and instants of pure material processuality...... (flickering light bulbs; polyrhythmic layers). Taking our point of departure in a discussion of Gilles Deleuze’s concepts of modulation and signaletic material in relation to electronic media, we examine how the complex orchestration of pulsation between signification and material modulation produces...

  20. Plasmonic angular tunability of gold nanoparticles generated by fs laser ablation

    Energy Technology Data Exchange (ETDEWEB)

    Pace, M.L.; Guarnaccio, A.; Ranù, F. [CNR, ISM UOS Tito Scalo, Zona Industriale, Tito Scalo (PZ) 85050 (Italy); Trucchi, D. [CNR, ISM UOS Montelibretti, Via Salaria km 29.300, Monterotondo Scalo, (RM) 00015 (Italy); Orlando, S., E-mail: stefano.orlando@ism.cnr.it [CNR, ISM UOS Tito Scalo, Zona Industriale, Tito Scalo (PZ) 85050 (Italy); Mollica, D.; Parisi, G.P. [CNR, ISM UOS Tito Scalo, Zona Industriale, Tito Scalo (PZ) 85050 (Italy); Medici, L.; Lettino, A. [CNR, IMAA, Area della Ricerca di Potenza -Zona Industriale, Tito Scalo, (PZ) 85050 (Italy); De Bonis, A.; Teghil, R. [Dipart. di Scienze,Università della Basilicata, Viale dell’Ateneo Lucano 10, Potenza, 85100 (Italy); Santagata, A. [CNR, ISM UOS Tito Scalo, Zona Industriale, Tito Scalo (PZ) 85050 (Italy)

    2016-06-30

    Highlights: • fs pulsed laser ablation as a technique to produce nanoparticles. • Nanoparticle distribution as an evidence for plasmonic tunable resonances. • Correlation between angular distribution of deposited nanoparticles and specific plasmonic resonances. - Abstract: With the aim to study the influence of deposition parameters on the plasmonic properties of gold (Au) nanoparticles (NPs) deposited by ultra-short ablation, we have focused our attention in evaluating how their size distribution can be varied. In this work, the role played by the NPs’ angular distribution, agglomeration and growth is related to the resulting optical properties. UV–vis-NIR absorption spectra together with Scanning Electron Microscopy, Transmission Electron Microscopy and X-ray microdiffraction observations are presented in order to show how the angular distribution of fs laser ablation and deposition of Au NPs provides different plasmonic properties which can be beneficial for several aims, from optoelectronic to biosensor applications.

  1. Multiferroic and visible light photocatalytic properties of six-layered perovskite oxide Nd{sub 6}Ti{sub 4}Fe{sub 2}O{sub 20}

    Energy Technology Data Exchange (ETDEWEB)

    Cheng, Xiangyi; Yang, Hongshun; Ruan, Keqing; Xu, Xiaoliang [University of Science and Technology of China, Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences and School of Physical Sciences, Hefei (China); Meng, Dechao [University of Science and Technology of China, Hefei National Laboratory for Physical Sciences at Microscale, Hefei (China)

    2017-04-15

    The layered perovskite-related oxide Nd{sub 6}Ti{sub 4}Fe{sub 2}O{sub 20} was prepared by incorporating NdFeO{sub 3} in the host Nd{sub 2}Ti{sub 2}O{sub 7} using floating-zone melting technique. XRD and HRTEM results suggested that the material has a layered structure of n = 6 type. Nd{sub 6}Ti{sub 4}Fe{sub 2}O{sub 20} exhibited spin glass-like behavior, and its magnetic behavior was affected by magnetic Nd{sup 3+} ions strongly at low temperature. The ferromagnetic and ferroelectric properties were observed by magnetic and PFM measurements at the room temperature. UV-Vis absorption spectroscopy revealed that the compound is a visible light absorbing photocatalyst with a direct band gap of 2.2 eV. In addition, the photocatalytic behaviors of bulk Nd{sub 6}Ti{sub 4}Fe{sub 2}O{sub 20} were evaluated by photodegradation of rhodamine B under visible light irradiation. (orig.)

  2. Replacement of unobservable coupling DoFs in substructure decoupling

    Science.gov (United States)

    D'Ambrogio, Walter; Fregolent, Annalisa

    2017-10-01

    In this paper, suitable criteria are sought for an optimal replacement of unobservable coupling DoFs when performing substructure decoupling, that is the identification of a dynamic model of a substructure embedded in a known structure. The need arises since coupling DoFs are often difficult to observe, either because they cannot be easily accessed or because they include rotational DoFs. The substitution must be carried out both to preserve the information that would be lost when some coupling DoFs are not taken into account, and to avoid or minimize ill-conditioning problems. As shown in previous papers, coupling DoFs can be effectively replaced by internal DoFs for the sake of substructure decoupling. Furthermore, criteria for an appropriate selection of the internal DoFs used to replace unobservable coupling DoFs are sketched, which involve either the Frequency Response Function (FRF) or the transmissibility between internal and coupling DoFs. Here, previously introduced FRF and transmissibility criteria are combined with the condition number of the interface flexibility matrix to develop a procedure to optimally replace some coupling DoFs with a subset of internal DoFs. The procedure is tested using both simulated and experimental data of a tree structure (known structure), made by a cantilever beam with two offset short arms, coupled to another beam (structure to be identified).

  3. FS5 sun exposure survivability analysis

    Directory of Open Access Journals (Sweden)

    Ming-Ying Hsu

    2017-01-01

    Full Text Available During the Acquisition and Safe Hold (ASH mode, FORMOAT-5 (FS5 satellite attitude is not fully controlled. Direct sun exposure on the Remote Sensing Instrument (RSI satellite telescope sensor may occur. The sun exposure effect on RSI sensor performance is investigated to evaluate the instrument’s survivability in orbit. Both satellite spin speed and sun exposure duration are considered as the key parameters in this study. A simple radiometry technique is used to calculate the total sun radiance exposure to examine the RSI sensor integrity. Total sun irradiance on the sensor is computed by considering the spectral variation effect through the RSI’s five-band filter. Experiments that directly expose the sensor to the sun on the ground were performed with no obvious performance degradation found. Based on both the analysis and experiment results, it is concluded that the FS5 RSI sensor can survive direct sun exposure during the ASH mode.

  4. Manila on CephFS at CERN

    CERN Document Server

    Wiebalck, Arne

    2017-01-01

    In response to the user demand for a light-weight provisioning of distributed file system shares, the OpenStack and Ceph teams at CERN have recently added Manila/CephFS to their service catalogues. While leveraging the operational experience with a 190'000 core OpenStack deployment and a 12 PB Ceph cluster for such a self-service kiosque suggested itself, the service design and setup phases were followed by a number of functionality and stress tests to ensure the individual components are ready for production use. The final service design and the results obtained during the pre-production phase, for instance when scaling to a large number of Manila and CephFS clients or the integration with Magnum/Kubernetes, will be presented alongside the initial use cases and our first experiences running these new services in production.

  5. Optical and electrical properties of SnO2 thin films after ultra-short pulsed laser annealing

    NARCIS (Netherlands)

    Scorticati, D.; Illiberi, A.; Römer, G.R.B.E.; Bor, T.; Ogieglo, W.; Klein Gunnewiek, M.; Lenferink, A.; Otto, C.; Skolski, J.Z.P.; Grob, F.; Lange, D.F. de; Huis in 't Veld, A.J.

    2013-01-01

    Ultra-short pulsed laser sources, with pulse durations in the ps and fs regime, are commonly exploited for cold ablation. However, operating ultra-short pulsed laser sources at fluence levels well below the ablation threshold allows for fast and selective thermal processing. The latter is especially

  6. Degree of compression and energy efficiency of a capillary compressor of femtosecond laser pulses

    Energy Technology Data Exchange (ETDEWEB)

    Konyashchenko, Aleksandr V; Kostryukov, P V; Losev, Leonid L; Tenyakov, S Yu

    2011-11-30

    A relation between the degree of pulse compression and energy efficiency is derived for femtosecond laser pulse compressors that utilise spectral broadening of pulses in a gas-filled capillary. We show that the degree of compression has a maximum at an energy efficiency from 15% to 30%. A 15-fold compression of a 290-fs pulse with an energy efficiency of 24% is demonstrated.

  7. FS4, FS4-p, and FSP: a 4-month crossover study of 3 fine structure sound-coding strategies.

    Science.gov (United States)

    Riss, Dominik; Hamzavi, Jafar-Sasan; Blineder, Michaela; Honeder, Clemens; Ehrenreich, Isabella; Kaider, Alexandra; Baumgartner, Wolf-Dieter; Gstoettner, Wolfgang; Arnoldner, Christoph

    2014-01-01

    The aim of the present study was to compare two novel fine structure strategies "FS4" and "FS4-p" with the established fine structure processing (FSP) strategy. FS4 provides fine structure information on the apical four-electrode channels. With FS4-p, these electrodes may be stimulated in a parallel manner. The authors evaluated speech perception, sound quality, and subjective preference. A longitudinal crossover study was done on postlingually deafened adults (N = 33) who were using FSP as their default strategy. Each participant was fitted with FS4, FS4-p, and FSP, for 4 months in a randomized and blinded order. After each run, an Adaptive Sentence test in noise (Oldenburger Sentence Test [OLSA]) and a Monosyllable test in quiet (Freiburger Monosyllables) were performed, and subjective sound quality was determined with a Visual Analogue Scale. At the end of the study the preferred strategy was noted. Scores of the OLSA did not reveal any significant differences among the three strategies, but the Freiburger test showed a statistically significant effect (p = 0.03) with slightly worse scores for FS4 (49.7%) compared with FSP (54.3%). Performance of FS4-p (51.8%) was comparable with the other strategies. Both audiometric tests depicted a high variability among subjects. The number of best-performing strategies for each participant individually was as follows: (a) for the OLSA: FSP, N = 10.5; FS4, N = 10.5; and FS4-p, N = 12; and (b) for the Freiburger test: FSP, N = 14; FS4, N = 9; and FS4-p, N = 10. A moderate agreement was found in the best-performing strategies of the Speech tests within the participants. For sound quality, speech in quiet, classical, and pop music were assessed. No significant effects of strategy were found for speech in quiet and classical music, but auditory impression of pop music was rated as more natural in FSP compared with FS4 (p = 0.04). It is interesting that at the end of the study, a majority of the participants favored the new

  8. Design and implementation of a fs-resolved transmission electron microscope based on thermionic gun technology

    Energy Technology Data Exchange (ETDEWEB)

    Piazza, L., E-mail: luca.piazza@epfl.ch [Laboratory for Ultrafast Microscopy and Electron Scattering (LUMES), ICMP, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne (Switzerland); Masiel, D.J. [Integrated Dynamic Electron Solutions, Inc., 455 Bolero Drive, Danville, CA 94526 (United States); LaGrange, T.; Reed, B.W. [Condensed Matter and Materials Division Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, P.O. Box 808, L-356, Livermore, CA 94550 (United States); Barwick, B. [Department of Physics, Trinity College, 300 Summit St., Hartford, CT 06106 (United States); Carbone, Fabrizio [Laboratory for Ultrafast Microscopy and Electron Scattering (LUMES), ICMP, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne (Switzerland)

    2013-09-23

    Highlights: • We present the implementation of a femtosecond-resolved ultrafast TEM. • This is the first ultrafast TEM based on a thermionic gun geometry. • An additional condenser lens has been used to maximize the electron count. • We achieved a time resolution of about 300 fs and an energy resolution of 1 eV. - Abstract: In this paper, the design and implementation of a femtosecond-resolved ultrafast transmission electron microscope is presented, based on a thermionic gun geometry. Utilizing an additional magnetic lens between the electron acceleration and the nominal condenser lens system, a larger percentage of the electrons created at the cathode are delivered to the specimen without degrading temporal, spatial and energy resolution significantly, while at the same time maintaining the femtosecond temporal resolution. Using the photon-induced near field electron microscopy effect (PINEM) on silver nanowires the cross-correlation between the light and electron pulses was measured, showing the impact of the gun settings and initiating laser pulse duration on the electron bunch properties. Tuneable electron pulses between 300 fs and several ps can be obtained, and an overall energy resolution around 1 eV was achieved.

  9. Fringe resolved autocorrelator for characterization of ultrashort laser pulses using second harmonics of ZnO nanorods

    Science.gov (United States)

    Panda, Rudrashish; Das, Susanta Kumar

    2017-11-01

    Use of second harmonics (SH) of Zinc oxide (ZnO) nanorods for ultrashort pulse characterization is reported here. The used ZnO nanorods are grown by chemical bath deposition method. The pulse characterization is done by the autocorrelator technique. From this, the pulse duration is estimated to be 14 femtosecond (fs). The spectral bandwidth of the pulse under probe is ∼ 85 nm with central wavelength at 820 nm. Theoretically, Fourier transformation limited pulse width corresponding to this spectral bandwidth is 12 fs. So experimentally measured pulse width closely matches with the theoretical prediction. The reported characterization system is cost effective and can be used for characterization of fs laser of broad wavelength range.

  10. Análise epidemiológica de lesões no futebol de salão durante o XV Campeonato Brasileiro de Seleções Sub 20 Análisis epidemiológico de las lesiones en el fútbol de salón durante el XV Campeonato Brasileño de Selecciones Sub 20 Epidemiologic analysis of injuries occurred during the 15th Brazilian Indoor Soccer (Futsal Sub20 Team Selection Championship

    Directory of Open Access Journals (Sweden)

    Rodrigo Nogueira Ribeiro

    2006-02-01

    Full Text Available INTRODUÇÃO: Vários autores têm investigado a incidência de lesões no futebol. Entretanto, poucos trabalhos têm analisado as lesões no Futebol de Salão. O objetivo deste estudo foi analisar a incidência, circunstâncias e características das lesões registradas no Futebol de Salão durante o XV Campeonato Brasileiro de Futebol de Salão Sub 20. MÉTODOS: Fisioterapeutas ou médicos de todas as seleções participantes do XV Campeonato Brasileiro de Futebol de Salão Sub 20 responderam a um questionário para investigar a ocorrência de lesões durante as partidas. A taxa de resposta foi de 100%. RESULTADOS: Um total de 32 lesões foi registrado durante as 23 partidas, com incidência de 1,39 lesão por partida ou 208,6 lesões por 1.000 horas/jogo. Aproximadamente 1 a 3 lesões por partida resultaram em afastamento de jogadores em partidas ou treinamentos. As lesões de contato eram predominantes em 65,62% (21 das 32 lesões e a maioria dessas lesões não resultou no afastamento dos jogadores. CONCLUSÕES: O presente estudo observou que a incidência das lesões durante o XV Campeonato Brasileiro de Futebol de Salão Sub 20 foi semelhante à registrada em torneios de Futebol de Salão, mas superior aos achados em torneios de futebol, caracterizando a especificidade do esporte. Entretanto, circunstâncias e características são similares entre eles devido à semelhança de demanda do esporte.INTRODUCCIÓN: Varios autores han estado investigando la incidencia de lesiones en el fútbol. Sin embargo, pocos trabajos han estado analizando las lesiones en el fútbol de salón. El objetivo de este estudio fue el de analizar la incidencia, y las circunstancias, y características de las lesiones registradas en el fútbol de salón durante el XV Campeonato Brasileño de Fútbol de salón Sub 20. MÉTODOS: Médicos y/o fisioterapeutas del todos los participantes del XV Campeonato Brasileño de Fútbol de salón Sub 20 contestaron una encuesta

  11. FS laser processing of bio-polymer thin films for studying cell-to-substrate specific response

    Energy Technology Data Exchange (ETDEWEB)

    Daskalova, A., E-mail: a_daskalova@code.bg [Institute of Electronics, Bulgarian Academy of Sciences, 72, Tsarigradsko Chaussee Blvd., 1784 Sofia (Bulgaria); Nathala, Chandra S.R. [Institute of General Physics, Vienna University of Technology, Wiedner Hauptstr. 8-10/134, A-1040 Wien (Austria); Spectra-Physics Vienna, Fernkorngasse 10, 1100 Wien (Austria); Kavatzikidou, P.; Ranella, A. [Institute for Electronic Structure and Lasers-FORTH, P.O. Box 1385, Vassilika Vouton, 711 10 Heraklion, Crete (Greece); Szoszkiewicz, R. [Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Str., 02-507 Warsaw, Poland (Poland); Husinsky, W. [Institute of General Physics, Vienna University of Technology, Wiedner Hauptstr. 8-10/134, A-1040 Wien (Austria); Fotakis, C. [Institute for Electronic Structure and Lasers-FORTH, P.O. Box 1385, Vassilika Vouton, 711 10 Heraklion, Crete (Greece)

    2016-09-30

    Highlights: • Systematic research in the field of fs laser interaction with biopolymers for application in tissue engineering. • Utilizing a new biopolymer blend of collagen/elastin material for studying the interaction process in the fs domain. • Obtaining of improved, circularly shaped, interconnected nanopores, with high reproducibility from collagen/elastin layer. • Observation of randomly arranged pattern outside modification zone due to formation of an impact wave over biofilm surface. • NIH/3T3 cell-interface interaction reveal a preferable cell migration on fs laser-modified surface array. - Abstract: The use of ultra-short pulses for nanoengineering of biomaterials opens up possibilities for biological, medical and tissue engineering applications. Structuring the surface of a biomaterial into arrays with micro- and nanoscale features and architectures, defines new roadmaps to innovative engineering of materials. Thin films of novel collagen/elastin composite and gelatin were irradiated by Ti:sapphire fs laser in air at central wavelength 800 nm, with pulse durations in the range of 30 fs. The size and shape as well as morphological forms occurring in the resulted areas of interaction were analyzed as a function of irradiation fluence and number of pulses by atomic force microscopy (AFM). The fs interaction regime allows generation of well defined micro porous surface arrays. In this study we examined a novel composite consisting of collagen and elastin in order to create a biodegradable matrix to serve as a biomimetic surface for cell attachment. Confocal microscopy images of modified zones reveal formation of surface fringe patterns with orientation direction alongside the area of interaction. Outside the crater rim a wave-like topography pattern is observed. Structured, on a nanometer scale, surface array is employed for cell-culture experiments for testing cell’s responses to substrate morphology. Mice fibroblasts migration was monitored

  12. Three-dimensional laser pulse intensity diagnostic for photoinjectors

    Directory of Open Access Journals (Sweden)

    Heng Li

    2011-11-01

    Full Text Available Minimizing the electron-beam emittance of photoinjectors is an important task for maximizing the brightness of the next-generation x-ray facilities, such as free-electron lasers and energy recovery linacs. Optimally shaped laser pulses can significantly reduce emittance. A reliable diagnostic for the laser pulse intensity is required for this purpose. We demonstrate measurement of three-dimensional spatiotemporal intensity profiles, with spatial resolution of 20  μm and temporal resolution of 130 fs. The capability is illustrated by measurements of stacked soliton pulses and pulses from a dissipative-soliton laser.

  13. Quartic-phase-limited grism-based ultrashort pulse shaper.

    Science.gov (United States)

    Field, Jeffrey J; Durfee, Charles G; Squier, Jeff A; Kane, Steve

    2007-11-01

    By replacing the dispersive element in a zero-dispersion pulse shaper with a grism, we have constructed a quartic-phase-limited pulse shaper. We demonstrate compensation of 4500 fs2 without the use of a dynamic element in the pulse shaping line, which is approximately the amount of dispersion induced by a typical multiphoton microscope. We also demonstrate that detuning the pulse shaper to compensate for quadratic phase induces negligible spatial chirp, thereby maintaining a high-quality focal spot for a microscopy setup.

  14. Intrastromal refractive sugery with ultrashort laser pulses in living animals

    Science.gov (United States)

    Heisterkamp, Alexander; Mamom, Thanongsak; Kermani, Omid; Drommer, Wolfgang; Welling, Herbert; Ertmer, Wolfgang; Lubatschowski, Holger

    2002-06-01

    In order to perform refractive surgery, fs-laser pulses of 130-fs pulse duration were focused into animal cornea. By focusing the radiation down to spot-sizes of 5 micrometers , very precise cuts could be achieved inside the treated eyes, accompanied with minimum collateral damage to the tissue by thermal or mechanical effects. Due to these low side effects, micrometers -cutting precisions at preparing of corneal flaps and lenticules can be achieved. Thus, animal studies with 8 living rabbits were performed, in which intrastromal lenticules and flaps were created and extracted. Wound healing reactions were studied by histo- pathological analysis of the treated eyes in intervals at one, 7, 14 and 28 days after surgery. The treated eyes showed mild wound healing reactions with comparable results to what is known from Excimer-LASIK. Moreover the use of the fs-laser offered new possibilities in preparation of corneal flaps, providing advantages to the use of the mechanical keratome.

  15. Laser impulse coupling measurements at 400 fs and 80 ps using the LULI facility at 1057 nm wavelength

    Science.gov (United States)

    Phipps, C. R.; Boustie, M.; Chevalier, J.-M.; Baton, S.; Brambrink, E.; Berthe, L.; Schneider, M.; Videau, L.; Boyer, S. A. E.; Scharring, S.

    2017-11-01

    At the École Polytechnique « LULI » facility, we have measured the impulse coupling coefficient Cm (target momentum per joule of incident laser light) with several target materials in vacuum, at 1057 nm and 400 fs and 80 ps pulse duration. A total of 64 laser shots were completed in a two-week experimental campaign, divided between the two pulse durations and among the materials. Our main purpose was to resolve wide discrepancies among reported values for Cm in the 100 ps region, where many applications exist. A secondary purpose was to compare Cm at 400 fs and 80 ps pulse duration. The 80 ps pulse was obtained by partial compression. Materials were Al, Ta, W, Au, and POM (polyoxymethylene, trade name Delrin). One application of these results is to pulsed laser ablation propulsion in space, including space debris re-entry, where narrow ranges in Cm and specific impulse Isp spell the difference between dramatic and uneconomical performance. We had difficulty measuring mass loss from single shots. Imparted momentum in single laser shots was determined using pendulum deflection and photonic Doppler velocimetry. Cm was smaller at the 400 fs pulse duration than at 80 ps. To our surprise, Cm for Al at 80 ps was at most 30 N/MW with 30 kJ/m2 incident fluence. On the other extreme, polyoxymethylene (POM, trade name Delrin) demonstrated 770 N/MW under these conditions. Together, these results offer the possibility of designing a Cm value suited to an application, by mixing the materials appropriately.

  16. Flexible and transparent silicon-on-polymer based sub-20 nm non-planar 3D FinFET for brain-architecture inspired computation

    KAUST Repository

    Sevilla, Galo T.

    2014-02-22

    An industry standard 8′′ silicon-on-insulator wafer based ultra-thin (1 μm), ultra-light-weight, fully flexible and remarkably transparent state-of-the-art non-planar three dimensional (3D) FinFET is shown. Introduced by Intel Corporation in 2011 as the most advanced transistor architecture, it reveals sub-20 nm features and the highest performance ever reported for a flexible transistor. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  17. Preemiad said Rein Raud, fs, Mart Kivastik

    Index Scriptorium Estoniae

    2005-01-01

    Eesti Kultuurkapitali 2004. aasta kirjanduse aastapreemia laureaadid on: Rein Raud ("Hector ja Bernard"), fs (luulekogu "2004"), Mart Kivastik (näidend "Külmetava kunstniku portree"), Jaan Rannap ("Nelja nimega koer"), Toomas Haug ("Troojamäe tõotus"), Harald Rajamets (tõlkeluule kogumik "Pegasos ja peegel"), Antoine Chalvin ("Kalevipoja" tõlge prantsuse keelde"), Ilmar Talve ("Eesti kultuurilugu"), Lauri Sommer (artikkel Uku Masingu käsikirja "Saadik Magellani pilvest" vaimne, ajalis-ruumiline ja elulooline taust), Boris Tuch ("Gorjatshaja desjatka estonskihh pisatelei")

  18. Ultrashort pulse fiber delivery with optimized dispersion control by reflection grisms at 800 nm.

    Science.gov (United States)

    Kalashyan, Meri; Lefort, Claire; Martínez-León, Lluís; Mansuryan, Tigran; Mouradian, Levon; Louradour, Frederic

    2012-11-05

    We experimentally demonstrate a compact and efficient arrangement for fiber delivery of sub-30 fs energetic light pulses at 800 nm. Pulses coming from a broadband Ti:Sapphire oscillator are negatively pre-chirped by a grism-pair stretcher that allows for the control of second and third orders of dispersion. At the direct exit of a 2.7-m long large mode area (LMA) photonic crystal fiber 1-nJ pulses are temporally compressed to 29 fs producing close to 30 kW of peak power. The tunability of the device is studied. Comparison between LMA fibers and standard SMF fibers is also discussed.

  19. Monolithic stabilized Yb-fiber All-PM laser directly delivering nJ-level femtosecond pulses

    DEFF Research Database (Denmark)

    Turchinovich, Dmitry; Liu, Xiaomin; Lægsgaard, Jesper

    2008-01-01

    We present a monolithic, self-starting, all-PM, stabilized Yb-fiber laser, pulse-compressed in a hollow-core PM photonic crystal fiber, providing the 370 fs pulses of 4 nJ energy with high mode quality.......We present a monolithic, self-starting, all-PM, stabilized Yb-fiber laser, pulse-compressed in a hollow-core PM photonic crystal fiber, providing the 370 fs pulses of 4 nJ energy with high mode quality....

  20. fs - kes ta on ja kust ta tuleb : [luuletused] / [Mesikepp, Indrek] fs

    Index Scriptorium Estoniae

    fs, pseud., 1971-

    2004-01-01

    Sisu: fs - kes ta on ja kust ta tuleb ; "töötasin arhiivis..." ; mustad puud mustas vees ; "on päev. on kylm. on öö..." ; "tead ju kyll..." ; "päiksest paistes päevad..." ; "mida sa teed kui on öö..."

  1. Nielsen: Aladdin-Suite, FS89. Maskarade-Overture / Robert Layton

    Index Scriptorium Estoniae

    Layton, Robert

    1996-01-01

    Uuest heliplaadist "Nielsen: Aladdin-Suite, FS89. Maskarade-Overture, Prelude, Act 2. The Cockerels' Dance. Rhapsody Overture: An imaginary journey to the Faroe Islands, FS123. Helios Overture, FS32. Saga-Drom, FS46. Pan and Syrinx, FS87. Gothenburg Symphony Orchestra, Neeme Järvi" DG 447 757-2GH (72 minutes: DDD)

  2. Investigation of all-in-fiber Yb doped femtosecond fiber oscillator for generation of parabolic pulses in normal dispersion fiber amplifier

    Science.gov (United States)

    Frankinas, S.; Bartulevicius, T.; Michailovas, A.; Rusteika, N.

    2017-07-01

    In this work femtosecond passively mode-locked environmentally stable Ytterbium fiber oscillator generating pulses with duration of 380 fs is presented. Short pulse duration and smooth spectrum were obtained from the oscillator using chirped fiber Bragg grating with very low anomalous chromatic dispersion (0.15 ps2) and semiconductor saturable absorber mirror. Linearly chirped parabolic pulses were produced after amplification of the oscillator pulses in low concentration ytterbium doped fiber amplifier. Transform limited duration of the generated parabolic pulses was 110 fs.

  3. Fiber-optic soliton self-compression to subcycle pulse widths in the mid-infrared

    Science.gov (United States)

    Meshchankin, D. V.; Voronin, A. A.; Zheltikov, A. M.

    2017-12-01

    We demonstrate physical scenarios whereby ultrashort mid-infrared pulses even with very low pulse energies can be compressed to subcycle pulse widths using nonlinear-optical field transformations in chalcogenide photonic-crystal fibers. We show that an 85 fs pulse with a spectrum centered at 3.5 µm can be compressed to a subcycle pulse width through a solitonic transformation inside a chalcogenide photonic-crystal fiber with a hexagonal cladding. Waveform distortions of such pulses can be suppressed, as our simulations show, by combining chalcogenide photonic-crystal fibers with carefully optimized solid-state components for accurate nonlinear phase compensation.

  4. Time resolved EUV pump-probe microscopy of fs-LASER induced nanostructure formation

    Science.gov (United States)

    Freiberger, R.; Hauck, J.; Reininghaus, M.; Wortmann, D.; Juschkin, L.

    2011-05-01

    We report on our efforts in design and construction of a compact Extreme Ultraviolet (EUV)-pump-probe microscope. The goal is the observation of formation of nanostructures, induced by a femtosecond (fs)-laser pulse. The unique interaction processes of fs-laser radiation with matter open up new markets in laser material processing and, therefore, are actively investigated in the last decade. The resulting "sub 100 nm"-structures offer vast potential benefits in photonics, biotechnology, tribological surface design, plasmonic applications and production of nanoparticles. Focused fs-laser radiation causes a local modification resulting in nanostructures of high precision and reproducibility. However the formation dynamics is not well understood. Research in this field requires high temporal and spatial resolution. A combination of fs-laser and EUV-microscope provides a tool for "in situ"-observation of the formation dynamics. As exemplary structures to be investigated, we use nanojets on thin gold films and periodic surface structures (ripples) on dielectrics. In the future, the EUV-pump-probe microscope can become a versatile tool to observe physical or biological processes. Microscopy using EUV-light is capable of detecting structures on a scale down to several tens of nanometers. For detailed investigations a compact EUV-microscope has been realized utilizing OVI Balmer-alpha radiation at 17.3 nm coming from a discharge produced oxygen plasma. As optical elements a grazing incidence elliptical collector and a zone plate with a width of outermost zone of 50 nm and a spectral filter to avoid chromatic aberrations are used. The detector is a fast gated microchannel plate with a pore size of 2 microns contacted by a low impedance transmission line. The expected spatial resolution of the setup is better than 100 nm and the time resolution is better than 1 ns. The newly developed EUV-microscope is a powerful tool for a wide field of investigations that need high time

  5. Ultrafast pulse generation with black phosphorus

    CERN Document Server

    Li, Diao; Karvonen, Lasse; Ye, Guojun; Lipsanen, Harri; Chen, Xianhui; Sun, Zhipei

    2015-01-01

    Black phosphorus has been recently rediscovered as a new and interesting two-dimensional material due to its unique electronic and optical properties. Here, we study the linear and nonlinear optical properties of black phosphorus thin films, indicating that both linear and nonlinear optical properties are anisotropic and can be tuned by the film thickness. Then we employ the nonlinear optical property of black phosphorus for ultrafast (pulse duration down to ~786 fs in mode-locking) and large-energy (pulse energy up to >18 nJ in Q-switching) pulse generation in fiber lasers at the near-infrared telecommunication band ~1.5 {\\mu}m. Our results underscore relatively large optical nonlinearity in black phosphorus and its prospective for ultrafast pulse generation, paving the way to black phosphorus based nonlinear and ultrafast photonics applications (e.g., ultrafast all-optical switches/modulators, frequency converters etc.).

  6. Heat treatment and thickness-dependent electrical study of Se{sub 50}Te{sub 20}S{sub 30} thin film

    Energy Technology Data Exchange (ETDEWEB)

    Abd-Elrahman, M.I.; Hafiz, M.M.; Qasem, Ammar; Abdel-Rahim, M.A. [Assiut University, Physics Department, Faculty of Science, Assiut (Egypt)

    2016-08-15

    Chalcogenide Se{sub 50}Te{sub 20}S{sub 30} thin film of different thickness was deposited using thermal evaporation technique. The thermogram of the chalcogenide bulk Se{sub 50}Te{sub 20}S{sub 30} was obtained using a differential scanning calorimetry (DSC) with heating rate of 7.5 K/min. The glass transition temperature T{sub g}, crystallization temperature T{sub c} and peak crystallization temperature T{sub p} were identified. The X-ray diffraction (XRD) examination indicates the amorphous nature of the as-deposited film and polycrystalline structure of the thermal annealed ones. The dark electrical resistivity (ρ) measurements were taken in temperature range (300-500 K) and thickness range (200-450 nm). Analysis of the electrical resistivity results revealed two types of conduction mechanisms: conduction due to extended states in the temperature range (T > T{sub c}) and variable range hopping in the temperature range (T < T{sub c}). The effect of the heat treatment and thickness on the density of localized states at the Fermi level N(E{sub F}) and hopping parameters were studied. (orig.)

  7. Effect of additional elements on compositional modulated atomic layered structure of hexagonal Co{sub 80}Pt{sub 20} alloy films with superlattice diffraction

    Energy Technology Data Exchange (ETDEWEB)

    Hinata, Shintaro [Department of Electronic Engineering, Graduate School of Engineering, Tohoku University, 6-6-05, Aoba, Aramaki, Aoba-ku, Sendai 980-8579 (Japan); Research Fellowship Division Japan Society for the Promotion of Science (JSPS), Kojimachi Business Center Building, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083 (Japan); Yamane, Akira; Saito, Shin [Department of Electronic Engineering, Graduate School of Engineering, Tohoku University, 6-6-05, Aoba, Aramaki, Aoba-ku, Sendai 980-8579 (Japan)

    2016-05-15

    The effect of additional element on compositionally modulated atomic layered structure of hexagonal Co{sub 80}Pt{sub 20} alloy films with superlattice diffraction was investigated. In this study it is found that the addition of Cr or W element to Co{sub 80}Pt{sub 20} alloy film shows less deterioration of hcp stacking structure and compositionally modulated atomic layer stacking structure as compared to Si or Zr or Ti with K{sub u} of around 1.4 or 1.0 × 10{sup 7} erg/cm{sup 3} at 5 at.% addition. Furthermore, for O{sub 2} addition of O{sub 2} ≥ 5.0 × 10{sup −3} Pa to CoPt alloy, compositionally modulated atomic layer stacking structure will be deteriorated with enhancement of formation of hcp stacking structure which leads higher K{sub u} of 1.0 × 10{sup 7} erg/cm{sup 3}.

  8. Effect of irradiation temperature on crystallization of {alpha}-Fe induced by He irradiations in Fe{sub 80}B{sub 20} amorphous alloy

    Energy Technology Data Exchange (ETDEWEB)

    San-noo, Toshimasa; Toriyama, Tamotsu; Wakabayashi, Hidehiko; Iijima, Hiroshi [Musashi Inst. of Tech., Tokyo (Japan); Hayashi, Nobuyuki; Sakamoto, Isao

    1997-03-01

    Since amorphous alloys are generally highly resistant to irradiation and their critical radiation dose is an order of magnitude higher for Fe-B amorphous alloy than Mo-methods, these alloys are expected to become applicable as for fusion reactor materials. The authors investigated {alpha}-Fe crystallization in an amorphous alloy, Fe{sub 80}B{sub 20} using internal conversion electron Moessbauer spectroscopy. The amount of {alpha}-Fe component was found to increase by raising the He-irradiation dose. The target part was modified to enable He ion radiation at a lower temperature (below 400 K) by cooling with Peltier element. Fe{sub 80}B{sub 20} amorphous alloy was cooled to keep the temperature at 300 K and exposed to 40 keV He ion at 1-3 x 10{sup 8} ions/cm{sup 2}. The amount of {alpha}-Fe crystal in each sample was determined. The crystal formation was not observed for He ion radiation below 2 x 10{sup 18} ions/cm{sup 2}, but that at 3 x 10{sup 8} ions/ cm{sup 2} produced a new phase ({delta} +0.40 mm/sec, {Delta} = 0.89 mm/sec). The decrease in the radiation temperature from 430 to 300 K resulted to extremely repress the production of {alpha}-Fe crystal, suggesting that the crystallization induced by He-radiation cascade is highly depending on the radiation temperature. (M.N.)

  9. Pulse propagation in a decoupled two-core fiber.

    Science.gov (United States)

    Liu, M; Chiang, K S

    2010-09-27

    It is known that a decoupled two-core fiber can prevent monochromatic light at a specific wavelength (the decoupling wavelength) launched into one core from coupling to the other core. In this paper, we show that a pulse at the decoupling wavelength launched into one core of such a fiber inevitably splits into two pairs of pulses propagating in the two cores along the fiber. The minimum distance required for pulse splitting to be visible is inversely proportional to the coupling-coefficient dispersion in the fiber and linearly proportional to the pulse width. It would take only several centimeters of a recently demonstrated decoupled two-core photonic-bandgap fiber to observe the pulse-splitting effect with a 100-fs pulse. We also study the effects of self-phase modulation on the pulse propagation dynamics in a decoupled two-core fiber in both the normal and anomalous dispersion regimes.

  10. Diagnostics of pulse contrast for petawatt laser in SGII

    Science.gov (United States)

    Ouyang, Xiaoping; Liu, Daizhong; Zhu, Baoqiang; Zhu, Jian; Zhu, Jianqiang

    2015-02-01

    Pulse contrast is an important parameter for ultrafast pulses. It shall be 108 or higher in order to avoid effect from noise before main pulse. Diagnostics with cross-correlation can achieve high temporal resolution such as ~7fs. Cross-correlation has advantage in pulse contrast measurement than autocorrelation because it can distinguish noise before or after main pulse. High dynamic range is also essential in pulse contrast measurement. Cross-correlation signal from a single shot is converted into a signal series through fiber array, which can be analyzed by a set of a PMT and an oscilloscope. Noise from nonlinear crystal and scatter needs decrease to improve dynamic range. And pulse power is also discussed in pulse contrast experiments. Time delay τ is generated by travel stage in measurement for repetition pulses. Then energy instability will generate error in this measurement. In measurement for single shot pulse, time delay τ is generated by slant angle of beams. The scanning procession is completed with thousands parts of beam section within a single shot, and error will generated from no uniformity in near field. Performance test of pulse contrast measurement is introduced in subsequent sections. Temporal resolution is testified by self-calibration. Dynamic range is judged by a parallel flat. At last pulse contrast of petawatt laser is diagnosed by a single shot cross-correlator with high confidence. The ratio is 10-6 at 50ps before main pulse, and 10-4 at 10ps before main pulse.

  11. High-average power 4 GW pulses with sub-8 optical cycles from a Tm-doped fiber laser driven nonlinear pulse compression stage

    Science.gov (United States)

    Gebhardt, Martin; Gaida, Christian; Stutzki, Fabian; Hädrich, Steffen; Jauregui, Cesar; Limpert, Jens; Tünnermann, Andreas

    2017-02-01

    Thulium-doped fiber lasers are an attractive concept for the generation of mid-infrared (mid-IR) ultrashort pulses around 2 μm wavelength with an unprecedented average power. To date, these systems deliver >150 W of average power and GW-class pulse peak powers with output pulse durations of a few hundreds of fs. As some applications can greatly benefit from even shorter pulse durations, the spectral broadening and subsequent temporal pulse compression can be a key enabling technology for high average power few-cycle laser sources around 2 μm wavelength. In this contribution we demonstrate the nonlinear compression of ultrashort pulses from a high repetition rate Tm-doped fiber laser using a nitrogen gas-filled hollow capillary. Pulses with 4 GW peak power, 46 fs FWHM duration at an average power of 15.4 W have been achieved. This is, to the best of our knowledge, the first 2 μm laser delivering intense, GW-pulses with sub 50-fs pulse duration and an average power of >10 W. Based on this result, we discuss the next steps towards a 100 W-level, GW-class few-cycle mid-IR laser.

  12. Polarisation-dependent generation of fs-laser induced periodic surface structures

    Science.gov (United States)

    Gräf, Stephan; Müller, Frank A.

    2015-03-01

    The formation of laser induced periodic surface structures (LIPPS) was investigated on polished stainless steel surfaces under irradiation with fs-laser pulses characterised by a pulse duration τ = 300 fs, a laser wavelength λ = 1025 nm, a repetition frequency frep = 250 Hz and a laser fluence F = 1 J/cm2. For this purpose line scans with a scanning velocity v = 0.5 mm/s were performed in air environment at normal incidence utilising a well-defined temporal control of the electrical field vector. The generated surface structures were characterised by optical microscopy, by scanning electron microscopy and by atomic force microscopy in combination with Fourier transformation. The results reveal the formation of a homogenous and highly periodic surface pattern of ripples with a period Λexp ≈ 925 nm aligned perpendicular to the incident electric field vector for static linear polarisation states. Utilising a motor-driven rotation device it was demonstrated that a continuously rotating electric field vector allows to transfer the originally well-ordered periodic ripples into tailored disordered surface structures that could be of particular interest for e.g. absorbing surfaces, plasmonic enhanced optoelectronic devices and biomedical applications.

  13. Multi-THz spectroscopy of mobile charge carriers in P3HT:PCBM on a sub-100 fs time scale

    DEFF Research Database (Denmark)

    Cooke, David G.; Krebs, Frederik C; Jepsen, Peter Uhd

    2013-01-01

    spectroscopy of a polymer bulk heterojunction film P3HT:PCBM using a single-cycle, phase-locked and coherently detected multi-THz transient as a probe pulse following femtosecond excitation at 400 nm. By observing changes to the reflected THz transients from the film surface following photoexcitation, we can...... extract the complex optical conductivity spectrum for the film in snapshots of 40 fs following photoexcitation. We find that for our excitation conditions mobile charges are created in less than 120 fs and are characterized by a spectrum which is characteristic of a two dimensional delocalized polaron...

  14. EST Table: FS906357 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS906357 E_FL_fufe_07P06_F_0 10/09/28 89 %/170 aa gb|EFA11544.1| kurtz [Tribolium c...l|GB13683-PA 10/09/10 89 %/170 aa gi|270015096|gb|EFA11544.1| kurtz [Tribolium castaneum] FS911973 fufe ...

  15. EST Table: FS932328 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS932328 E_FL_fwgP_33O12_F_0 10/09/28 72 %/148 aa ref|NP_001166687.1| cuticular pro...mology 10/08/29 n.h 10/09/10 low homology 10/09/10 low homology 10/09/10 low homology FS934632 fwgP ...

  16. EST Table: FS832832 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS832832 E_FL_fmgV_41G24_R_0 11/12/09 GO hit GO:0003824(catalytic activity)|GO:0004...a gnl|Amel|GB18896-PA 10/09/10 39 %/281 aa gi|91091528|ref|XP_970224.1| PREDICTED: similar to beta-glucosidase [Tribolium castaneum] FS832832 fmgV ...

  17. EST Table: FS932732 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS932732 E_FL_fwgP_35B10_F_0 10/09/28 99 %/200 aa ref|NP_001091823.1| poly A bindin...75975.1| PREDICTED: similar to poly A binding protein isoform 4 [Tribolium castaneum] FS932483 fwgP ...

  18. EST Table: FS898131 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS898131 E_FL_ftes_29L01_R_0 10/09/28 43 %/185 aa ref|XP_002736928.1| PREDICTED: sorting and assembly machin...341|ref|XP_966817.2| PREDICTED: similar to sorting and assembly machinery component 50 homolog [Tribolium castaneum] FS871738 ftes ...

  19. EST Table: FS917025 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS917025 E_FL_fufe_40B06_F_0 11/12/09 GO hit GO:0016020(membrane) 10/09/28 94 %/274.../09/10 82 %/271 aa gi|91082327|ref|XP_974606.1| PREDICTED: similar to prohibitin protein WPH [Tribolium castaneum] FS917025 fufe ...

  20. EST Table: FS922014 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS922014 E_FL_fwgP_03G10_F_0 11/12/09 n.h 10/09/28 43 %/123 aa ref|XP_001650999.1| ...A 10/09/10 41 %/128 aa gi|91089477|ref|XP_969208.1| PREDICTED: similar to AGAP011858-PA [Tribolium castaneum] FS922014 fwgP ...

  1. EST Table: FS767215 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS767215 E_FL_fcaL_45F03_F_0 10/09/28 44 %/190 aa ref|XP_975194.1| PREDICTED: similar to something...ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 fcaL ...

  2. EST Table: FS913032 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS913032 E_FL_fufe_28A02_F_0 10/09/28 44 %/216 aa ref|XP_975194.1| PREDICTED: similar to something...A 10/09/10 44 %/216 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 fufe ...

  3. EST Table: FS920530 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS920530 E_FL_fufe_50K23_F_0 11/12/09 GO hit GO:0047800(cysteamine dioxygenase acti...090992|ref|XP_974899.1| PREDICTED: similar to 2-aminoethanethiol (cysteamine) dioxygenase [Tribolium castaneum] FS920530 fufe ...

  4. EST Table: FS845801 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS845801 E_FL_fner_24L14_F_0 10/09/28 43 %/155 aa ref|XP_971046.2| PREDICTED: similar to antolefin... %/116 aa gnl|Amel|GB16043-PA 10/09/10 43 %/155 aa gi|189240340|ref|XP_971046.2| PREDICTED: similar to antolefinin [Tribolium castaneum] FS921551 fner ...

  5. EST Table: FS848732 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS848732 E_FL_fner_33A19_F_0 10/09/28 39 %/198 aa ref|XP_971046.2| PREDICTED: similar to antolefin... %/152 aa gnl|Amel|GB16043-PA 10/09/10 39 %/198 aa gi|189240340|ref|XP_971046.2| PREDICTED: similar to antolefinin [Tribolium castaneum] FS921551 fner ...

  6. EST Table: FS918193 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS918193 E_FL_fufe_43J18_F_0 10/09/28 39 %/198 aa ref|XP_971046.2| PREDICTED: similar to antolefin... %/152 aa gnl|Amel|GB16043-PA 10/09/10 39 %/198 aa gi|189240340|ref|XP_971046.2| PREDICTED: similar to antolefinin [Tribolium castaneum] FS921551 fufe ...

  7. EST Table: FS905568 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS905568 E_FL_fufe_05H13_F_0 10/09/28 40 %/188 aa ref|XP_971046.2| PREDICTED: similar to antolefin... %/142 aa gnl|Amel|GB16043-PA 10/09/10 40 %/188 aa gi|189240340|ref|XP_971046.2| PREDICTED: similar to antolefinin [Tribolium castaneum] FS921551 fufe ...

  8. EST Table: FS867121 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS867121 E_FL_fner_33A19_R_0 10/09/28 39 %/198 aa ref|XP_971046.2| PREDICTED: similar to antolefin... %/152 aa gnl|Amel|GB16043-PA 10/09/10 39 %/198 aa gi|189240340|ref|XP_971046.2| PREDICTED: similar to antolefinin [Tribolium castaneum] FS752084 fner ...

  9. EST Table: FS882512 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS882512 E_FL_ftes_24I11_F_0 10/09/28 46 %/122 aa ref|XP_968918.2| PREDICTED: similar to william...189241014|ref|XP_968918.2| PREDICTED: similar to williams-beuren syndrome critical region protein [Tribolium castaneum] FS920403 ftes ...

  10. EST Table: FS905741 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS905741 E_FL_fufe_06A07_F_0 10/09/28 31 %/238 aa ref|XP_968918.2| PREDICTED: similar to william...189241014|ref|XP_968918.2| PREDICTED: similar to williams-beuren syndrome critical region protein [Tribolium castaneum] FS920403 fufe ...

  11. EST Table: FS920155 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS920155 E_FL_fufe_49I16_F_0 11/12/09 GO hit GO:0004175(endopeptidase activity)|GO:...|Amel|GB10411-PA 10/09/10 87 %/232 aa gi|189237685|ref|XP_969117.2| PREDICTED: similar to proteasome beta-subunit [Tribolium castaneum] FS920155 fufe ...

  12. EST Table: FS912016 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS912016 E_FL_fufe_25A02_F_0 11/12/09 GO hit GO:0016787(hydrolase activity) 10/09/2...5 %/292 aa gi|91078974|ref|XP_974434.1| PREDICTED: similar to CG8889 CG8889-PA [Tribolium castaneum] FS912016 fufe ...

  13. EST Table: FS843095 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS843095 E_FL_fner_17B02_F_0 10/09/28 84 %/185 aa ref|XP_972038.2| PREDICTED: similar to liquid facets...26|ref|XP_972038.2| PREDICTED: similar to liquid facets [Tribolium castaneum] FS840960 fner ...

  14. EST Table: FS784619 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS784619 E_FL_fcaL_48C03_R_0 10/09/28 64 %/109 aa ref|XP_970998.1| PREDICTED: similar to Evolution...187|ref|XP_970998.1| PREDICTED: similar to Evolutionarily conserved signaling intermediate in Toll pathway, mitochondrial [Tribolium castaneum] FS874188 fcaL ...

  15. EST Table: FS877412 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS877412 E_FL_ftes_09L06_F_0 10/09/28 63 %/108 aa ref|XP_970998.1| PREDICTED: similar to Evolution...94187|ref|XP_970998.1| PREDICTED: similar to Evolutionarily conserved signaling intermediate in Toll pathway, mitochondrial [Tribolium castaneum] FS756091 ftes ...

  16. EST Table: FS773307 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS773307 E_FL_fcaL_01B18_R_0 10/09/28 51 %/210 aa ref|XP_970998.1| PREDICTED: similar to Evolution...187|ref|XP_970998.1| PREDICTED: similar to Evolutionarily conserved signaling intermediate in Toll pathway, mitochondrial [Tribolium castaneum] FS874188 fcaL ...

  17. EST Table: FS855034 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS855034 E_FL_fner_50N16_F_0 10/09/28 56 %/216 aa ref|XP_391845.2| PREDICTED: similar to tout...44.1| PREDICTED: similar to tout-velu CG10117-PA [Tribolium castaneum] FS931854 fner ...

  18. EST Table: FS911854 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS911854 E_FL_fufe_24H22_F_0 10/09/28 57 %/294 aa ref|XP_391845.2| PREDICTED: similar to tout...44.1| PREDICTED: similar to tout-velu CG10117-PA [Tribolium castaneum] FS931854 fufe ...

  19. EST Table: FS938466 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS938466 E_FL_fwgP_52B08_F_0 10/09/28 57 %/272 aa ref|XP_391845.2| PREDICTED: similar to tout...44.1| PREDICTED: similar to tout-velu CG10117-PA [Tribolium castaneum] FS931854 fwgP ...

  20. EST Table: FS917270 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS917270 E_FL_fufe_40N17_F_0 10/09/28 58 %/313 aa ref|XP_391845.2| PREDICTED: similar to tout...44.1| PREDICTED: similar to tout-velu CG10117-PA [Tribolium castaneum] FS931854 fufe ...

  1. EST Table: FS923093 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS923093 E_FL_fwgP_06I17_F_0 10/09/28 56 %/267 aa ref|XP_391845.2| PREDICTED: similar to tout...44.1| PREDICTED: similar to tout-velu CG10117-PA [Tribolium castaneum] FS931854 fwgP ...

  2. EST Table: FS807950 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS807950 E_FL_fmgV_24P14_F_0 10/09/28 54 %/237 aa ref|XP_391845.2| PREDICTED: similar to tout...44.1| PREDICTED: similar to tout-velu CG10117-PA [Tribolium castaneum] FS931854 fmgV ...

  3. EST Table: FS806566 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS806566 E_FL_fmgV_21B09_F_0 10/09/28 55 %/236 aa ref|XP_391845.2| PREDICTED: similar to tout...44.1| PREDICTED: similar to tout-velu CG10117-PA [Tribolium castaneum] FS931854 fmgV ...

  4. EST Table: FS905383 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS905383 E_FL_fufe_04O05_F_0 10/09/28 54 %/244 aa ref|XP_391845.2| PREDICTED: similar to tout...44.1| PREDICTED: similar to tout-velu CG10117-PA [Tribolium castaneum] FS931854 fufe ...

  5. EST Table: FS764450 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS764450 E_FL_fcaL_36N15_F_0 10/09/28 42 %/214 aa ref|XP_001945612.1| PREDICTED: similar to glucocerebro...608.1| PREDICTED: similar to putative lysosomal glucocerebrosidase [Tribolium castaneum] FS759318 fcaL ...

  6. EST Table: FS919981 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS919981 E_FL_fufe_49A03_F_0 11/12/09 n.h 10/09/28 41 %/110 aa gb|EFA11746.1| hypot...41 %/110 aa gi|270015298|gb|EFA11746.1| hypothetical protein TcasGA2_TC004236 [Tribolium castaneum] FS919981 fufe ...

  7. EST Table: FS844425 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS844425 E_FL_fner_20L21_F_0 10/09/28 67 %/134 aa ref|XP_974541.1| PREDICTED: similar to Media...74541.1| PREDICTED: similar to Mediator complex subunit 11 CG6884-PA [Tribolium castaneum] FS919479 fner ...

  8. EST Table: FS937741 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS937741 E_FL_fwgP_49P08_F_0 10/09/28 67 %/132 aa ref|XP_974541.1| PREDICTED: similar to Media...74541.1| PREDICTED: similar to Mediator complex subunit 11 CG6884-PA [Tribolium castaneum] FS919479 fwgP ...

  9. EST Table: FS836036 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS836036 E_FL_fmgV_50E03_R_0 11/12/09 GO hit GO:0005515(protein binding)|GO:0008745...CTED: similar to Tm-peptidoglycan recogntition protein-SA [Tribolium castaneum] FS836036 fmgV ...

  10. EST Table: FS836368 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS836368 E_FL_fmgV_51D01_R_0 10/09/28 90 %/196 aa dbj|BAG41976.1| alkaline phosphat... 47 %/164 aa gi|270012502|gb|EFA08950.1| hypothetical protein TcasGA2_TC006657 [Tribolium castaneum] FS823697 fmgV ...

  11. EST Table: FS930966 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS930966 E_FL_fwgP_29M10_F_0 10/09/28 44 %/215 aa ref|XP_969763.1| PREDICTED: similar to meteor...a gi|91078226|ref|XP_969763.1| PREDICTED: similar to meteorin [Tribolium castaneum] FS767139 fwgP ...

  12. EST Table: FS767139 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS767139 E_FL_fcaL_45B09_F_0 11/12/09 n.h 10/09/28 43 %/171 aa ref|XP_969763.1| PREDICTED: similar to meteor...10 43 %/171 aa gi|91078226|ref|XP_969763.1| PREDICTED: similar to meteorin [Tribolium castaneum] FS767139 fcaL ...

  13. EST Table: FS849851 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS849851 E_FL_fner_36C21_F_0 10/09/28 44 %/171 aa ref|XP_969763.1| PREDICTED: similar to meteor...a gi|91078226|ref|XP_969763.1| PREDICTED: similar to meteorin [Tribolium castaneum] FS767139 fner ...

  14. EST Table: FS845415 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS845415 E_FL_fner_23J15_F_0 10/09/28 42 %/122 aa ref|XP_969763.1| PREDICTED: similar to meteor...a gi|91078226|ref|XP_969763.1| PREDICTED: similar to meteorin [Tribolium castaneum] FS767139 fner ...

  15. EST Table: FS855797 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS855797 E_FL_fner_52P17_F_0 10/09/28 43 %/137 aa ref|XP_969763.1| PREDICTED: similar to meteor...a gi|91078226|ref|XP_969763.1| PREDICTED: similar to meteorin [Tribolium castaneum] FS767139 fner ...

  16. EST Table: FS850158 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS850158 E_FL_fner_37A23_F_0 10/09/28 43 %/137 aa ref|XP_969763.1| PREDICTED: similar to meteor...a gi|91078226|ref|XP_969763.1| PREDICTED: similar to meteorin [Tribolium castaneum] FS767139 fner ...

  17. EST Table: FS854689 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS854689 E_FL_fner_49N22_F_0 10/09/28 67 %/202 aa ref|XP_395977.1| PREDICTED: similar to mRNA dec..._968428.1| PREDICTED: similar to Decapping protein 2 CG6169-PA [Tribolium castaneum] FS769359 fner ...

  18. EST Table: FS772264 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS772264 E_FL_fcaL_24O15_F_0 10/09/28 69 %/158 aa ref|XP_395977.1| PREDICTED: similar to mRNA dec..._968428.1| PREDICTED: similar to Decapping protein 2 CG6169-PA [Tribolium castaneum] FS769359 fcaL ...

  19. EST Table: FS758250 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS758250 E_FL_fcaL_07L19_F_0 10/09/28 69 %/226 aa ref|XP_395977.1| PREDICTED: similar to mRNA dec..._968428.1| PREDICTED: similar to Decapping protein 2 CG6169-PA [Tribolium castaneum] FS769359 fcaL ...

  20. Generation, shaping, compression, characterization and application of intense ultrashort laser pulses

    CERN Document Server

    Cheng, Z

    2001-01-01

    Recently, the development of intense ultrashort laser pulses has attracted much interest because of their significant applications in many fields of science and technology. This thesis contributes to the generation, shaping, compression, characterization and application of intense ultrashort laser pulses as follows: 1. Laser pulses of 17.5-fs with a peak power of 0.1-TW at 1-kHz repetition rate have been generated by a compact single-stage ten-pass Ti:sapphire amplifier system with a high-order-dispersion-mirror compensator and a spectral shaping for the first time. The experimental results are in reasonable agreement with numerical calculations. 2. The first experimental study on arbitrary shaping of intense ultrashort pulses has been conducted in a kHz amplifier system capable of generating 27 fs pulses by using an acousto-optic programmable dispersive filter (AOPDF). 17-fs transform-limited pulses have been achieved and arbitrary shaping of these 17-fs pulses has been demonstrated both in the temporal and ...

  1. Self-starting stretched-pulse fiber laser mode locked and stabilized with slow and fast semiconductor saturable absorbers.

    Science.gov (United States)

    Guina, M; Xiang, N; Vainionpää, A; Okhotnikov, O G; Sajavaara, T; Keinonen, J

    2001-11-15

    A self-starting stretched-pulse mode-locked erbium-doped fiber laser that uses fast and slow semiconductor saturable absorbers is described. By using two absorbers, we obtained reliable operation at a fundamental repetition rate with 250 pJ of pulse energy without multiple-pulse breakup. External chirp compensation was used to compress the highly chirped pulses to durations of 135 fs.

  2. MarFS-Requirements-Design-Configuration-Admin

    Energy Technology Data Exchange (ETDEWEB)

    Kettering, Brett Michael [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Grider, Gary Alan [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-07-08

    This document will be organized into sections that are defined by the requirements for a file system that presents a near-POSIX (Portable Operating System Interface) interface to the user, but whose data is stored in whatever form is most efficient for the type of data being stored. After defining the requirement the design for meeting the requirement will be explained. Finally there will be sections on configuring and administering this file system. More and more, data dominates the computing world. There is a “sea” of data out there in many different formats that needs to be managed and used. “Mar” means “sea” in Spanish. Thus, this product is dubbed MarFS, a file system for a sea of data.

  3. Ultrashort laser pulse driven inverse free electron laser accelerator experiment

    Directory of Open Access Journals (Sweden)

    J. T. Moody

    2016-02-01

    Full Text Available In this paper we discuss the ultrashort pulse high gradient inverse free electron laser accelerator experiment carried out at the Lawrence Livermore National Laboratory which demonstrated gradients exceeding 200  MV/m using a 4 TW 100 fs long 800 nm Ti:Sa laser pulse. Due to the short laser and electron pulse lengths, synchronization was determined to be one of the main challenges in this experiment. This made necessary the implementation of a single-shot, nondestructive, electro-optic sampling based diagnostics to enable time-stamping of each laser accelerator shot with <100  fs accuracy. The results of this experiment are expected to pave the way towards the development of future GeV-class IFEL accelerators.

  4. Temperature dependence of the electrical resistivity of amorphous Co{sub 80-x}Er{sub x}B{sub 20} alloys

    Energy Technology Data Exchange (ETDEWEB)

    Touraghe, O.; Khatami, M. [LPMMAT, Universite Hassan II, Faculte des Sciences Ain Chock, B.P. 5366, Route d' EL Jadida km-8, Casablanca (Morocco); Menny, A. [LPMMAT, Universite Hassan II, Faculte des Sciences Ain Chock, B.P. 5366, Route d' EL Jadida km-8, Casablanca (Morocco); Departement de Physique, Faculte des Sciences et Technique de Nouakchott (Mauritania); Lassri, H. [LPMMAT, Universite Hassan II, Faculte des Sciences Ain Chock, B.P. 5366, Route d' EL Jadida km-8, Casablanca (Morocco)], E-mail: lassrih@hotmail.com; Nouneh, K. [CENM/CNESTEN, Maamora Rabat (Morocco)

    2008-06-01

    The temperature dependence of the electrical resistivity of amorphous Co{sub 80-x}Er{sub x}B{sub 20} alloys with x=0, 3.9, 7.5 and 8.6 prepared by melt spinning in pure argon atmosphere was studied. All amorphous alloys investigated here are found to exhibit a resistivity minimum at low temperature. The electrical resistivity exhibits logarithmic temperature dependence below the temperature of resistivity minimum T{sub min}. In addition, the resistivity shows quadratic temperature behavior in the interval T{sub min}

  5. Low leakage Ru-strontium titanate-Ru metal-insulator-metal capacitors for sub-20 nm technology node in dynamic random access memory

    Energy Technology Data Exchange (ETDEWEB)

    Popovici, M., E-mail: Mihaela.Ioana.Popovici@imec.be; Swerts, J.; Redolfi, A.; Kaczer, B.; Aoulaiche, M.; Radu, I.; Clima, S.; Everaert, J.-L.; Van Elshocht, S.; Jurczak, M. [Imec, Leuven 3001 (Belgium)

    2014-02-24

    Improved metal-insulator-metal capacitor (MIMCAP) stacks with strontium titanate (STO) as dielectric sandwiched between Ru as top and bottom electrode are shown. The Ru/STO/Ru stack demonstrates clearly its potential to reach sub-20 nm technology nodes for dynamic random access memory. Downscaling of the equivalent oxide thickness, leakage current density (J{sub g}) of the MIMCAPs, and physical thickness of the STO have been realized by control of the Sr/Ti ratio and grain size using a heterogeneous TiO{sub 2}/STO based nanolaminate stack deposition and a two-step crystallization anneal. Replacement of TiN with Ru as both top and bottom electrodes reduces the amount of electrically active defects and is essential to achieve a low leakage current in the MIM capacitor.

  6. Structural relaxations in the bulk amorphous alloy Fe{sub 61}Co{sub 10}Ti{sub 3}Y{sub 6}B{sub 20}

    Energy Technology Data Exchange (ETDEWEB)

    Błoch, K., E-mail: 23kasia1@wp.pl; Nabiałek, M.; Gondro, J.

    2017-05-01

    The paper presents studies of annealing effect on the disaccommodation phenomenon in bulk amorphous alloy Fe{sub 61}Co{sub 10}Ti{sub 3}Y{sub 6}B{sub 20}. The investigated sample was prepared by suction-casting method in the form of rod. The annealing process has been performed at temperature well below the crystallisation temperature. The amorphous structure has been confirmed using X-ray diffractometer. The susceptibility and its disaccommodation were determined using completely automated set up. The disaccommodation curve was decomposed into three elementary processes, each of them was described by Gaussian distribution of relaxation times. The obtained results indicate that the disaccommodation phenomenon in studied alloy is related with directional ordering of atom pairs near the free volumes; this is in agreement with H. Kronmüller's theorem.

  7. A Novel Sub-20 V Contact Gate Metal Oxide Semiconductor Field Effect Transistor with Fully Complementary Metal Oxide Semiconductor Compatible Process

    Science.gov (United States)

    Lee, Te Liang; Tsang Tsai, Ming; King, Ya Chin; Lin, Chrong Jung

    2013-04-01

    In this paper, a novel sub-20 V device which is called contact gate MOSFET (CGMOS) with fully CMOS logic compatible process is proposed and demonstrated. Comparing with lateral double diffusion MOSFET (LDMOS), CGMOS uses P substrate instead of N minus layer as drift region in logic process, and a contact on resistance protection oxide (RPO) layers to form an extra gate on the drain side of the channel region to provide a better gate control and reduce the surface field. This new device significantly rises up the breakdown voltage to 18 V with specific on-resistance 8.8 mΩ.mm2 in a small high voltage (HV) MOSFET area. Since there is no extra mask for creating the drift region or additional step for the wire bonding, CGMOS makes the integration of high voltage and logic circuits much simpler and area-saving.

  8. Slow light and pulse propagation in semiconductor waveguides

    DEFF Research Database (Denmark)

    Hansen, Per Lunnemann

    This thesis concerns the propagation of optical pulses in semiconductor waveguide structures with particular focus on methods for achieving slow light or signal delays. Experimental pulse propagation measurements of pulses with a duration of 180 fs, transmitted through quantum well based waveguide...... structures, are presented. Simultaneous measurements of the pulse transmission and delay are measured as a function of input pulse energy for various applied electrical potentials. Electrically controlled pulse delay and advancement are demonstrated and compared with a theoretical model. The limits...... of the model as well as the underlying physical mechanisms are analysed and discussed. A method to achieve slow light by electromagnetically induced transparency (EIT) in an inhomogeneously broadened quantum dot medium is proposed. The basic principles of EIT are assessed and the main dissimilarities between...

  9. SPECTRAL AMPLITUDE AND PHASE EVOLUTION IN PETAWATT LASER PULSES

    Energy Technology Data Exchange (ETDEWEB)

    Filip, C V

    2010-11-22

    The influence of the active gain medium on the spectral amplitude and phase of amplified pulses in a CPA system is studied. Results from a 10-PW example based on Nd-doped mixed glasses are presented. In conclusion, this study shows that, by using spectral shaping and gain saturation in a mixed-glass amplifier, it is possible to produce 124 fs, 1.4 kJ laser pulses. One detrimental effect, the pulse distortion due to resonant amplification medium, has been investigated and its magnitude as well as its compensation calculated.

  10. More 3D PIC simulations on the smlwfa of 35fs class lasers

    Science.gov (United States)

    Mori, W. B.; Tsung, F. S.; Ren, C.; Adam, J. C.; Silva, L. O.; Fonseca, R. A.

    2002-11-01

    In the self-modulated laser wakefield regime a laser pulse several to many 2 π c/ ωp long breaks up via Raman scattering type instabilities producing large wakes. In some cases these wakes can trap background electrons generating a beam of accelerated electrons with a large energ spread. PIC simuations have shown that this process is highly sensitive to the laser intenisty, pulse length, and plasma density [K-C.Tzeng et al.PRL 76, 3332 (1996), K-C.Tzeng et al, PRL 79, 5258 (1997)]. There have been several recent experiments, e.g., V.Malka et al., Phys.Plasmas 8, 2605 (2001), in which 35fs laser pulses have been used. In this case the pulses are at most only a few 2 π c/ ωp even at the highest densities. We report here on our continuing PIC study using the code OSIRIS for parameters relevant to these experiments. We have found that the number of electrons and the maximum electron energy both decrease as the plasma density is raised, which is in agreement with the experimental results. We will also discuss the acceleration mechanism, the angular spread and the effects of raising the laser power. Work supported by DOE and NSF

  11. Pulse Oximetry

    Science.gov (United States)

    ... people need more oxygen when asleep than when awake. Some need more oxygen with activity than when ... oxygen saturation levels (below 80%) or with very dark skin. When should I use a pulse oximeter? ...

  12. Normal dispersion erbium-doped fiber laser with pulse energies above 10 nJ.

    Science.gov (United States)

    Ruehl, Axel; Kuhn, Vincent; Wandt, Dieter; Kracht, Dietmar

    2008-03-03

    We report on an erbium-doped fiber oscillator mode-locked by nonlinear polarization evolution operating in the large normal dispersion regime. The setup produced highly chirped 10 nJ pulses at 37 MHz which can be compressed externally to below 75 fs. Hence, this simple and practical setup is capable of providing ultrashort pulses with a peak power of 140 kW. The pulse formation is indeed subject to intrapulse Raman-scattering but a clean and stable pulse train can be observed. The similarities as well as the differences of the output characteristics to the parabolic pulse and wave breaking-free regime are explicated.

  13. Construction and characterization of ultraviolet acousto-optic based femtosecond pulse shapers

    Energy Technology Data Exchange (ETDEWEB)

    Mcgrane, Shawn D [Los Alamos National Laboratory; Moore, David S [Los Alamos National Laboratory; Greenfield, Margo T [Los Alamos National Laboratory

    2008-01-01

    We present all the information necessary for construction and characterization of acousto optic pulse shapers, with a focus on ultraviolet wavelengths, Various radio-frequency drive configurations are presented to allow optimization via knowledgeable trade-off of design features. Detailed performance characteristics of a 267 nm acousto-optic modulator (AOM) based pulse shaper are presented, Practical considerations for AOM based pulse shaping of ultra-broad bandwidth (sub-10 fs) amplified femtosecond pulse shaping are described, with particular attention paid to the effects of the RF frequency bandwidth and optical frequency bandwidth on the spatial dispersion of the output laser pulses.

  14. Towards optical attosecond pulses: broadband phase coherence between an ultrafast laser and OPO using lock-tozero CEO stabilization

    Directory of Open Access Journals (Sweden)

    Reid D. T.

    2013-03-01

    Full Text Available The carrier-envelope-offset frequencies of the pump, signal, idler and related sum-frequency mixing pulses have been locked to 0 Hz in a 20-fs-Ti:sapphire-pumped optical parametric oscillator, satisfying a critical prerequisite for optical attosecond pulse synthesis.

  15. Monolithic Ytterbium All-single-mode Fiber Laser with Direct Fiber-end Delivery of nJ-level Femtosecond Pulses

    DEFF Research Database (Denmark)

    Turchinovich, Dmitry

    2008-01-01

    We demonstrate a monolithic, i.e. without any free-space coupling, all-single-mode passively modelocked Yb-fiber laser, with direct fiber-end delivery of 364−405 fs pulses of 4 nJ pulse energy using a low-loss hollow-core photonic crystal fiber compression.......We demonstrate a monolithic, i.e. without any free-space coupling, all-single-mode passively modelocked Yb-fiber laser, with direct fiber-end delivery of 364−405 fs pulses of 4 nJ pulse energy using a low-loss hollow-core photonic crystal fiber compression....

  16. Second-order autocorrelation of XUV FEL pulses via time resolved two-photon single ionization of He.

    Science.gov (United States)

    Moshammer, R; Pfeifer, Th; Rudenko, A; Jiang, Y H; Foucar, L; Kurka, M; Kühnel, K U; Schröter, C D; Ullrich, J; Herrwerth, O; Kling, M F; Liu, X-J; Motomura, K; Fukuzawa, H; Yamada, A; Ueda, K; Ishikawa, K L; Nagaya, K; Iwayama, H; Sugishima, A; Mizoguchi, Y; Yase, S; Yao, M; Saito, N; Belkacem, A; Nagasono, M; Higashiya, A; Yabashi, M; Ishikawa, T; Ohashi, H; Kimura, H; Togashi, T

    2011-10-24

    Second-order autocorrelation spectra of XUV free-electron laser pulses from the Spring-8 Compact SASE Source (SCSS) have been recorded by time and momentum resolved detection of two-photon single ionization of He at 20.45 eV using a split-mirror delay-stage in combination with high-resolution recoil-ion momentum spectroscopy (COLTRIMS). From the autocorrelation trace we extract a coherence time of 8 ± 2 fs and a mean pulse duration of 28 ± 5 fs, much shorter than estimations based on electron bunch-length measurements. Simulations within the partial coherence model [Opt. Lett. 35, 3441 (2010)] are in agreement with experiment if a pulse-front tilt across the FEL beam diameter is taken into account that leads to a temporal shift of about 6 fs between both pulse replicas. © 2011 Optical Society of America

  17. Electron yield enhancement in a laser wakefield accelerator driven by asymmetric laser pulses

    Energy Technology Data Exchange (ETDEWEB)

    Leemans, W.P.; Catravas, P.; Esarey, E.; Geddes, C.G.R.; Toth, C.; Trines, R.; Schroeder, C.B.; Shadwick, B.A.; van Tilborg, J.; Faure, J.

    2002-08-01

    The effect of asymmetric laser pulses on electron yield from a laser wakefield accelerator has been experimentally studied using > 10{sup 19} cm{sup -3} plasmas and a 10 TW, > 45 fs, Ti:Al{sub 2}O{sub 3} laser. Laser pulse shape was controlled through non-linear chirp with a grating pair compressor. Pulses (76 fs FWHM) with a steep rise and positive chirp were found to significantly enhance the electron yield compared to pulses with a gentle rise and negative chirp. Theory and simulation show that fast rising pulses can generate larger amplitude wakes that seed the growth of the self-modulation instability and that frequency chirp is of minimal importance for the experimental parameters.

  18. Vacuum ultraviolet circularly polarized coherent femtosecond pulses from laser seeded relativistic electrons

    Directory of Open Access Journals (Sweden)

    N. Čutić

    2011-03-01

    Full Text Available We have demonstrated the generation of circularly polarized coherent light pulses at 66 nm wavelength by combining laser seeding at 263 nm of a 375 MeV relativistic electron bunch with subsequent coherent harmonic generation from an elliptical undulator of APPLE-II type. Coherent pulses at higher harmonics in linear polarization have been produced and recorded up to the sixth order (44 nm. The duration of the generated pulses depends on the temporal overlap of the initial seed laser pulse and the electron bunch and was on the order of 200 fs. Currently, this setup is the only source worldwide producing coherent fs-light pulses with variable polarization in the vacuum ultraviolet.

  19. Investigation of the tensor analysing power T{sub 20} in the vector d+p→{sup 3}He+η reaction with the COSY-ANKE experiment

    Energy Technology Data Exchange (ETDEWEB)

    Papenbrock, Michael Paul

    2016-07-01

    The work presented here is a contribution to the ongoing search for quasi-bound states between mesons and nuclei. Early theoretical predictions estimated that an η-meson may form a quasi-bound state with nuclei with a mass number of A≥12. Many measurements in this field have revealed evidence that such a state may indeed exist. More interestingly, it may already form at much lower mass numbers, e.g. between an η-meson and {sup 3}He nucleus. Of special note is an unpolarised measurement of the d+p→{sup 3}He+η reaction, which has been studied in unprecedented detail in the excess energy range -5 MeVsub 20}. The extracted values of T{sub 20} are compatible with a constant across this energy range. A linear fit revealed only a rather small possible energy dependence. Hence, the possible impact of the initial spin states on the extraction of the final state interaction was found to be of very little significance. Combining

  20. EST Table: FS884343 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available 48 %/152 aa gnl|Amel|GB11154-PA 10/09/10 52 %/153 aa gi|91079562|ref|XP_966370.1| PREDICTED: similar to iodotyrosine dehalogenase 1, partial [Tribolium castaneum] FS793821 ftes ...

  1. SeaWiFS_L3b_SNSP_LAND

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  2. SeaWiFS_L3b_MO_CDOM

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  3. SeaWiFS_L3b_YR_LAND

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  4. SeaWiFS_L3b_SNSU_CDOM

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  5. SeaWiFS_L3b_SCSU_PIC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  6. SeaWiFS_L3b_SCAU_CHL

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  7. SeaWiFS_L3b_CU_POC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  8. SeaWiFS_L3b_SNSU_PIC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  9. SeaWiFS_L3b_MO_PAR

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  10. SeaWiFS_L3b_SCSP_CDOM

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  11. SeaWiFS_L3b_SNSU_CHL

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  12. SeaWiFS_L3b_WC_RRS

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  13. SeaWiFS_L3b_DAY_CHL

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  14. SeaWiFS_L3b_SCAU_LAND

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  15. SeaWiFS_L3b_WC_POC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  16. SeaWiFS_L3b_SNWI_RRS

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  17. SeaWiFS_L3b_YR_PIC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  18. SeaWiFS_L3b_SNSP_PIC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  19. SeaWiFS_L3b_MC_PIC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  20. SeaWiFS_L3b_CU_PIC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  1. SeaWiFS_L3b_WC_PIC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  2. SeaWiFS_L3b_DAY_PIC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  3. SeaWiFS_L3b_SNWI_PIC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  4. EST Table: FS890234 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available ar to sorting and assembly machinery component 50 homolog [Tribolium castaneum] 10/09/12 low homology 10/08/...lar to sorting and assembly machinery component 50 homolog [Tribolium castaneum] FS904485 ftes ...

  5. SeaWiFS_L3b_SNAU_CHL

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  6. SeaWiFS_L3b_MC_RRS

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  7. SeaWiFS_L3b_DAY_RRS

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  8. SeaWiFS_L3b_SNAU_CDOM

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  9. EST Table: FS748350 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available PREDICTED: similar to fetal alzheimer antigen, falz [Nasonia vitripennis] 10/09/08 37 %/193 aa FBpp0290563|E...811424.1| PREDICTED: similar to fetal alzheimer antigen, falz [Tribolium castaneum] FS748350 caL- ...

  10. SeaWiFS_L3b_SCWI_RRS

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  11. SeaWiFS_L3b_SCSU_PAR

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  12. SeaWiFS_L3b_MO_CHL

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  13. SeaWiFS_L3b_MC_PAR

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  14. SeaWiFS_L3b_SCWI_CHL

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  15. SeaWiFS_L3b_SNSU_PAR

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  16. SeaWiFS_L3b_SNSP_POC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  17. SeaWiFS_L3b_YR_CHL

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  18. SeaWiFS_L3b_SCSP_RRS

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  19. SeaWiFS_L3m_GSM

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  20. SeaWiFS_L3b_GSM

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  1. SeaWiFS_L3b_SNSP_PAR

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  2. SeaWiFS_L3b_SCSP_PIC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  3. Nonlinear light propagation in fs laser-written waveguide arrays

    Directory of Open Access Journals (Sweden)

    Szameit A.

    2013-11-01

    Full Text Available We report on recent achievements in the field of nonlinear light propagation in fs laser-written waveguide lattices. Particular emphasis is thereby given on discrete solitons in such systems.

  4. EST Table: FS796464 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available ar to putative lysosomal glucocerebrosidase [Tribolium castaneum] 10/09/09 32 %/334 aa FBpp0237202|DvirGJ227...milar to putative lysosomal glucocerebrosidase [Tribolium castaneum] FS796494 ffbm ...

  5. EST Table: FS759318 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available 25 aa ref|XP_975608.1| PREDICTED: similar to putative lysosomal glucocerebrosidas...%/225 aa gi|91087345|ref|XP_975608.1| PREDICTED: similar to putative lysosomal glucocerebrosidase [Tribolium castaneum] FS759318 fcaL ...

  6. SeaWiFS_L3b_SNAU_POC

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  7. SeaWiFS_L3b_SNSP_RRS

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  8. SeaWiFS_L3b_CU_CHL

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  9. SeaWiFS_L3b_SNWI_CHL

    Data.gov (United States)

    National Aeronautics and Space Administration — The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September...

  10. EST Table: FS745067 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available DICTED: similar to Protein SDA1 homolog (Mystery protein 45A) [Tribolium castaneum] gb|EFA00563.1| hypotheti...imilar to Protein SDA1 homolog (Mystery protein 45A) [Tribolium castaneum] FS745067 bmmt ...

  11. EST Table: FS731272 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available DICTED: similar to Protein SDA1 homolog (Mystery protein 45A) [Tribolium castaneum] gb|EFA00563.1| hypotheti...imilar to Protein SDA1 homolog (Mystery protein 45A) [Tribolium castaneum] FS731272 bmmt ...

  12. Alumina nanowire growth by water decomposition and the peritectic reaction of decagonal Al{sub 65}Cu{sub 15}Co{sub 20} quasicrystals

    Energy Technology Data Exchange (ETDEWEB)

    Téllez-Vázquez, J.O., E-mail: oswald.tellez@gmail.com [Instituto de Investigaciones en Metalurgia y Materiales, UMSNH, Edificio U, Ciudad Universitaria, CP 58060 Morelia Michoacán, México (Mexico); Patiño-Carachure, C., E-mail: cpatino@pampano.unacar.mx [Facultad de Ingeniería, Universidad Autónoma del Carmen, Campus III, Avenida Central S/N, Esq. Con Fracc. Mundo Maya, C.P. 24115 Ciudad del Carmen, Campeche, México (Mexico); Rosas, G., E-mail: grtrejo@yahoo07.com.mx [Instituto de Investigaciones en Metalurgia y Materiales, UMSNH, Edificio U, Ciudad Universitaria, CP 58060 Morelia Michoacán, México (Mexico)

    2016-02-15

    In this paper, the results of the Al{sub 2}O{sub 3} nanowires' growth through a chemical reaction between Al and water vapor at 1050 °C are presented. Our approach is based on two primary considerations. First, at room temperature, the Al{sub 65}Cu{sub 15}Co{sub 20} alloy is affected by the following mechanism: 2Al (s) + 3H{sub 2}O (g) → Al{sub 2}O{sub 3} (s) + H{sub 2} (g). In this reaction, the released hydrogen induces cleavage fracture of the material to form small particles. Second, the Al{sub 65}Cu{sub 15}Co{sub 20} quasicrystalline phase is transformed on heating to liquid + Al (Cu, Co) cubic phase through a peritectic reaction at 1050 °C. The Al-rich liquid then reacts with water vapor, forming Al{sub 2}O{sub 3} nanowires. X-ray diffraction (XRD) analysis shows that the formed nanowires have a hexagonal structure, and infrared analysis further confirms the presence of α-Al{sub 2}O{sub 3} phase in the final products. Transmission electron microscopy observations show that nanoparticles are present at the end of nanowires, suggesting the VLS growth mechanism. Elemental analysis by energy dispersive spectroscopy (EDS) indicates that the particles at the tip of the nanowires are mainly formed by Co and Cu alloying elements and small amounts of Al. Electron microscopy observations showed nanowires with diameters ranging from 20 to 70 nm; the average diameter was 37 nm and the nanowire lengths were up to several micrometers. - Highlights: • Hexagonal alumina nanowires are grown at 1050 °C through the VLS process. • Alumina nanowires are obtained by the decomposition of decagonal quasicrystalline phase. • The decagonal phase decomposition follows a peritectic reaction at 1030 °C. • Nanoparticles are obtained by hydrogen embrittlement mechanism. • The nanoparticles catalyze the water decomposition to form wires.

  13. EST Table: FS748249 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS748249 E_ET_caL-_13N07_F_0 10/09/28 80 %/156 aa ref|XP_001847239.1| arsenical pump-driving...: Full=Arsenite-stimulated ATPase; AltName: Full=Arsenical pump-driving ATPase homolog gb|EDS45868.1| arsenical pump-driving...5|ref|XP_974589.1| PREDICTED: similar to arsenical pump-driving atpase [Tribolium castaneum] FS918630 caL- ...

  14. EST Table: FS908977 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS908977 E_FL_fufe_15N16_F_0 10/09/28 76 %/277 aa ref|XP_001847239.1| arsenical pump-driving...: Full=Arsenite-stimulated ATPase; AltName: Full=Arsenical pump-driving ATPase homolog gb|EDS45868.1| arsenical pump-driving...5|ref|XP_974589.1| PREDICTED: similar to arsenical pump-driving atpase [Tribolium castaneum] FS918630 fufe ...

  15. EST Table: FS853077 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS853077 E_FL_fner_45F16_F_0 10/09/28 78 %/203 aa ref|XP_001847239.1| arsenical pump-driving...: Full=Arsenite-stimulated ATPase; AltName: Full=Arsenical pump-driving ATPase homolog gb|EDS45868.1| arsenical pump-driving...5|ref|XP_974589.1| PREDICTED: similar to arsenical pump-driving atpase [Tribolium castaneum] FS918630 fner ...

  16. EST Table: FS849688 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS849688 E_FL_fner_35L09_F_0 10/09/28 77 %/212 aa ref|XP_001847239.1| arsenical pump-driving...: Full=Arsenite-stimulated ATPase; AltName: Full=Arsenical pump-driving ATPase homolog gb|EDS45868.1| arsenical pump-driving...5|ref|XP_974589.1| PREDICTED: similar to arsenical pump-driving atpase [Tribolium castaneum] FS918630 fner ...

  17. EST Table: FS811717 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS811717 E_FL_fmgV_35J01_F_0 10/09/28 low homology 10/09/09 low homology 10/08/29 4...148#prot ein_id:AAC04462.2 10/09/10 low homology 10/09/10 low homology 10/09/10 low homology FS931748 fmgV ...

  18. EST Table: FS803120 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS803120 E_FL_fmgV_11I07_F_0 10/09/28 74 %/111 aa ref|NP_001034501.1| extradenticle... [Tribolium castaneum] emb|CAD57734.1| extradenticle [Tribolium castaneum] 10/09/09 68 %/113 aa FBpp0123364|...XD_ANOGA 10/09/10 low homology 10/09/10 74 %/111 aa gi|38490515|emb|CAD57734.1| extradenticle [Tribolium castaneum] FS924788 fmgV ...

  19. EST Table: FS898442 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS898442 E_FL_ftes_30N10_R_0 10/09/28 92 %/225 aa ref|NP_001037622.1| timeless [Bom...byx mori] gb|ABD52733.1| timeless [Bombyx mori] 10/09/12 n.h 10/08/29 n.h 10/09/10 low homology 10/09/10 n.h 10/09/10 low homology FS751324 ftes ...

  20. EST Table: FS745261 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS745261 E_FL_bmmt_30M21_R_0 10/09/28 45 %/135 aa gb|ACN52067.1| insect intestinal mucin 3 [Mamestra configu...rata] 10/09/08 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS740161 bmmt ...

  1. EST Table: FS741790 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS741790 E_FL_bmmt_21A21_R_0 10/09/28 48 %/172 aa gb|ACN52067.1| insect intestinal mucin 3 [Mamestra configu...rata] 10/09/07 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS740161 bmmt ...

  2. EST Table: FS742806 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS742806 E_FL_bmmt_23P01_R_0 10/09/28 45 %/155 aa gb|ACN52067.1| insect intestinal mucin 3 [Mamestra configu...rata] 10/09/07 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS740161 bmmt ...

  3. EST Table: FS743730 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS743730 E_FL_bmmt_26H21_R_0 10/09/28 49 %/178 aa gb|ACN52067.1| insect intestinal mucin 3 [Mamestra configu...rata] 10/09/07 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS740161 bmmt ...

  4. EST Table: FS731466 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS731466 E_FL_bmmt_30M21_F_0 10/09/28 46 %/205 aa gb|ACN52067.1| insect intestinal mucin 3 [Mamestra configu...rata] 10/09/03 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS733323 bmmt ...

  5. EST Table: FS728748 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS728748 E_FL_bmmt_14B19_F_0 10/09/28 46 %/205 aa gb|ACN52067.1| insect intestinal mucin 3 [Mamestra configu...rata] 10/09/03 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS733323 bmmt ...

  6. EST Table: FS729582 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS729582 E_FL_bmmt_16H01_F_0 10/09/28 53 %/140 aa gb|ACN52067.1| insect intestinal mucin 3 [Mamestra configu...rata] 10/09/03 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS733323 bmmt ...

  7. EST Table: FS742801 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS742801 E_FL_bmmt_23O20_R_0 10/09/28 46 %/154 aa gb|ACN52067.1| insect intestinal mucin 3 [Mamestra configu...rata] 10/09/07 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS740161 bmmt ...

  8. EST Table: FS912760 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS912760 E_FL_fufe_27D02_F_0 11/12/09 n.h 10/09/28 56 %/251 aa ref|XP_001810438.1| ...l|Amel|GB19927-PA 10/09/10 56 %/251 aa gi|189242283|ref|XP_001810438.1| PREDICTED: similar to wd-repeat protein [Tribolium castaneum] FS912760 fufe ...

  9. EST Table: FS732324 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS732324 E_FL_bmmt_26D13_F_0 10/09/28 90 %/116 aa ref|XP_624457.1| PREDICTED: simil...8 10/09/10 90 %/116 aa gnl|Amel|GB16091-PA 10/09/10 86 %/116 aa gi|91088209|ref|XP_973275.1| PREDICTED: similar to suppressor of Ty 4 homolog 1 [Tribolium castaneum] FS916022 bmmt ...

  10. EST Table: FS763232 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS763232 E_FL_fcaL_33A16_F_0 10/09/28 41 %/216 aa ref|XP_001662018.1| receptor for ...otein|3L:33704151:33705233:1|gene:AGAP011814 10/09/10 n.h 10/09/10 33 %/223 aa gi|91084551|ref|XP_9732...98.1| PREDICTED: similar to receptor for activated C kinase, putative [Tribolium castaneum] FS911322 fcaL ...

  11. EST Table: FS902630 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS902630 E_FL_ftes_48D08_R_0 10/09/28 50 %/212 aa ref|XP_002432616.1| sorting and assembly machine...ry sam50 protein, putative [Pediculus humanus corporis] gb|EEB19878.1| sorting and assembly machine...REDICTED: similar to sorting and assembly machinery component 50 homolog [Tribolium castaneum] FS871738 ftes ...

  12. EST Table: FS858803 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS858803 E_FL_fner_08I05_R_0 10/09/28 95 %/113 aa ref|NP_001040212.1| sericotropin ...[Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fner ...

  13. EST Table: FS788843 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS788843 E_FL_fcaL_25O13_R_0 10/09/28 97 %/110 aa ref|NP_001040212.1| sericotropin ...[Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/09 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fcaL ...

  14. EST Table: FS779909 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS779909 E_FL_fcaL_32F20_R_0 10/09/28 96 %/113 aa ref|NP_001040212.1| sericotropin ...[Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/08 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fcaL ...

  15. EST Table: FS752443 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS752443 E_ET_caL-_09E02_R_0 10/09/28 98 %/111 aa ref|NP_001040212.1| sericotropin ...[Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/08 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 caL- ...

  16. EST Table: FS868425 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS868425 E_FL_fner_36N10_R_0 10/09/28 99 %/108 aa ref|NP_001040212.1| sericotropin ...[Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fner ...

  17. EST Table: FS863460 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS863460 E_FL_fner_22G20_R_0 10/09/28 100 %/105 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fner ...

  18. EST Table: FS761289 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS761289 E_FL_fcaL_17A17_F_0 10/09/28 92 %/113 aa ref|NP_001040212.1| sericotropin ...[Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/08 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS767530 fcaL ...

  19. EST Table: FS788550 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS788550 E_FL_fcaL_24P12_R_0 10/09/28 100 %/105 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/09 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fcaL ...

  20. EST Table: FS863591 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS863591 E_FL_fner_22N02_R_0 10/09/28 100 %/106 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fner ...

  1. EST Table: FS864691 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS864691 E_FL_fner_26A21_R_0 10/09/28 100 %/105 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fner ...

  2. EST Table: FS746333 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS746333 E_ET_caL-_05E14_F_0 10/09/28 100 %/112 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/08 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS767530 caL- ...

  3. EST Table: FS773654 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS773654 E_FL_fcaL_02C22_R_0 10/09/28 99 %/109 aa ref|NP_001040212.1| sericotropin ...[Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/08 n.h 10/08/28 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fcaL ...

  4. EST Table: FS863508 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS863508 E_FL_fner_22J03_R_0 10/09/28 100 %/105 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fner ...

  5. EST Table: FS861579 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS861579 E_FL_fner_16H12_R_0 10/09/28 100 %/111 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fner ...

  6. EST Table: FS856213 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS856213 E_FL_fner_01C08_R_0 10/09/28 91 %/117 aa ref|NP_001040212.1| sericotropin ...[Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS781882 fner ...

  7. EST Table: FS854903 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS854903 E_FL_fner_50H19_F_0 10/09/28 100 %/107 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS767530 fner ...

  8. EST Table: FS858637 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS858637 E_FL_fner_08A13_R_0 10/09/28 100 %/109 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fner ...

  9. EST Table: FS839906 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS839906 E_FL_fner_08A13_F_0 10/09/28 100 %/109 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/10 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS767530 fner ...

  10. EST Table: FS858076 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS858076 E_FL_fner_06G22_R_0 10/09/28 100 %/109 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fner ...

  11. EST Table: FS861022 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS861022 E_FL_fner_14O08_R_0 10/09/28 100 %/109 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fner ...

  12. EST Table: FS873205 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS873205 E_FL_fner_50H19_R_0 10/09/28 100 %/107 aa ref|NP_001040212.1| sericotropin... [Bombyx mori] gb|ABD36253.1| sericotropin [Bombyx mori] 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS784478 fner ...

  13. EST Table: FS757860 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS757860 E_FL_fcaL_06I06_F_0 10/09/28 76 %/215 aa ref|XP_001847239.1| arsenical pump-driving...: Full=Arsenite-stimulated ATPase; AltName: Full=Arsenical pump-driving ATPase homolog gb|EDS45868.1| arsenical pump-driving...5|ref|XP_974589.1| PREDICTED: similar to arsenical pump-driving atpase [Tribolium castaneum] FS918630 fcaL ...

  14. EST Table: FS772493 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS772493 E_FL_fcaL_25K03_F_0 10/09/28 99 %/180 aa ref|NP_001040437.1| muscular prot...ein 20 [Bombyx mori] gb|ABF51386.1| muscular protein 20 [Bombyx mori] 10/09/08 60 %/171 aa FBpp0235584|DvirG.../179 aa gi|91077564|ref|XP_972465.1| PREDICTED: similar to muscular protein 20 [Tribolium castaneum] FS765856 fcaL ...

  15. EST Table: FS842799 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS842799 E_FL_fner_16D15_F_0 10/09/28 69 %/184 aa ref|XP_969306.1| PREDICTED: similar to cxpwmw...68 %/170 aa gnl|Amel|GB16882-PA 10/09/10 69 %/184 aa gi|91075966|ref|XP_969306.1| PREDICTED: similar to cxpwmw03 [Tribolium castaneum] FS917554 fner ...

  16. EST Table: FS819918 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS819918 E_FL_fmgV_05G09_R_0 10/09/28 75 %/238 aa gb|ABC61672.1| cxpwmw03 [Periplan...1 10/09/10 74 %/238 aa gnl|Amel|GB16882-PA 10/09/10 75 %/238 aa gi|91075966|ref|XP_969306.1| PREDICTED: similar to cxpwmw03 [Tribolium castaneum] FS870678 fmgV ...

  17. EST Table: FS825356 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS825356 E_FL_fmgV_20I11_R_0 10/09/28 74 %/215 aa gb|ABC61672.1| cxpwmw03 [Periplan...1 10/09/10 74 %/215 aa gnl|Amel|GB16882-PA 10/09/10 75 %/215 aa gi|91075966|ref|XP_969306.1| PREDICTED: similar to cxpwmw03 [Tribolium castaneum] FS870678 fmgV ...

  18. EST Table: FS898626 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS898626 E_FL_ftes_31I07_R_0 10/09/28 69 %/203 aa gb|ABC61672.1| cxpwmw03 [Periplan...1 10/09/10 69 %/203 aa gnl|Amel|GB16882-PA 10/09/10 70 %/203 aa gi|91075966|ref|XP_969306.1| PREDICTED: similar to cxpwmw03 [Tribolium castaneum] FS870678 ftes ...

  19. EST Table: FS729151 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS729151 E_FL_bmmt_15D12_F_0 10/09/28 69 %/184 aa ref|XP_969306.1| PREDICTED: similar to cxpwmw...68 %/170 aa gnl|Amel|GB16882-PA 10/09/10 69 %/184 aa gi|91075966|ref|XP_969306.1| PREDICTED: similar to cxpwmw03 [Tribolium castaneum] FS917554 bmmt ...

  20. EST Table: FS866305 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS866305 E_FL_fner_30L20_R_0 11/12/09 GO hit GO:0006904(vesicle docking during exoc...ytosis)|GO:0016192(vesicle-mediated transport) 10/09/28 n.h 10/09/11 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS866305 fner ...

  1. EST Table: FS920146 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS920146 E_FL_fufe_49I05_F_0 11/12/09 10/09/28 low homology 10/09/13 low homology 1...0/08/29 n.h 10/09/10 low homology 10/09/10 n.h 10/09/10 33 %/142 aa gi|91080515|ref|XP_971732.1| PREDICTED: similar to galectin (AGAP008844-PA) [Tribolium castaneum] FS920146 fufe ...

  2. EST Table: FS759075 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS759075 E_FL_fcaL_10D11_F_0 10/09/28 74 %/130 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 74 %/130 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 fcaL ...

  3. EST Table: FS929904 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS929904 E_FL_fwgP_26J02_F_0 10/09/28 75 %/103 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 75 %/103 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 fwgP ...

  4. EST Table: FS845986 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS845986 E_FL_fner_25E02_F_0 10/09/28 74 %/130 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 74 %/130 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 fner ...

  5. EST Table: FS880067 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS880067 E_FL_ftes_17G09_F_0 10/09/28 74 %/130 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 74 %/130 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 ftes ...

  6. EST Table: FS919898 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS919898 E_FL_fufe_48M07_F_0 10/09/28 73 %/125 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 73 %/125 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 fufe ...

  7. EST Table: FS772667 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS772667 E_FL_fcaL_26C15_F_0 10/09/28 74 %/130 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 74 %/130 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 fcaL ...

  8. EST Table: FS850868 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS850868 E_FL_fner_39B06_F_0 10/09/28 74 %/130 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 74 %/130 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 fner ...

  9. EST Table: FS923497 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS923497 E_FL_fwgP_07M14_F_0 10/09/28 74 %/130 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 74 %/130 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 fwgP ...

  10. EST Table: FS757559 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS757559 E_FL_fcaL_05J04_F_0 10/09/28 74 %/130 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 74 %/130 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 fcaL ...

  11. EST Table: FS917105 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS917105 E_FL_fufe_40F12_F_0 10/09/28 74 %/130 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 74 %/130 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 fufe ...

  12. EST Table: FS842909 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS842909 E_FL_fner_16I13_F_0 10/09/28 74 %/130 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 74 %/130 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 fner ...

  13. EST Table: FS939357 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS939357 E_FL_fwgP_54K23_F_0 10/09/28 74 %/130 aa ref|XP_973202.2| PREDICTED: similar to leptin...0/09/10 n.h 10/09/10 74 %/130 aa gi|189238958|ref|XP_973202.2| PREDICTED: similar to leptin receptor-like protein [Tribolium castaneum] FS913444 fwgP ...

  14. EST Table: FS844060 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS844060 E_FL_fner_19L13_F_0 10/09/28 34 %/181 aa ref|NP_001086875.1| RMI1, RecQ mediated genome instability... 1, homolog [Xenopus laevis] sp|Q6DDH2.1|RMI1_XENLA RecName: Full=RecQ-mediated genome instability...to RMI1, RecQ mediated genome instability 1, homolog [Tribolium castaneum] FS765238 fner ...

  15. EST Table: FS912677 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS912677 E_FL_fufe_26P02_F_0 10/09/28 34 %/181 aa ref|NP_001086875.1| RMI1, RecQ mediated genome instability... 1, homolog [Xenopus laevis] sp|Q6DDH2.1|RMI1_XENLA RecName: Full=RecQ-mediated genome instability...to RMI1, RecQ mediated genome instability 1, homolog [Tribolium castaneum] FS765238 fufe ...

  16. EST Table: FS833546 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS833546 E_FL_fmgV_43G02_R_0 10/09/28 87 %/124 aa gb|AAX39408.1| serine protease [Bombyx mandarin...a] gb|ABY58153.1| serine protease [Bombyx mandarina] 10/09/10 low homology 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS827107 fmgV ...

  17. EST Table: FS922930 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS922930 E_FL_fwgP_06B07_F_0 10/09/28 44 %/250 aa ref|NP_001107813.1| glass bottom boat... protein [Tribolium castaneum] gb|EFA04645.1| glass bottom boat [Tribolium castaneum] 10/09/13 36 %/273 ...|270008197|gb|EFA04645.1| glass bottom boat [Tribolium castaneum] FS844271 fwgP ...

  18. EST Table: FS887803 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS887803 E_FL_ftes_40G04_F_0 10/09/28 35 %/122 aa ref|XP_967620.1| PREDICTED: similar to anopheles stephen... %/149 aa gnl|Amel|GB19565-PA 10/09/10 35 %/122 aa gi|91093471|ref|XP_967620.1| PREDICTED: similar to anopheles stephensi ubiquitin, putative [Tribolium castaneum] FS914988 ftes ...

  19. EST Table: FS934225 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS934225 E_FL_fwgP_39G18_F_0 10/09/28 34 %/122 aa ref|XP_967620.1| PREDICTED: similar to anopheles stephen... %/149 aa gnl|Amel|GB19565-PA 10/09/10 34 %/122 aa gi|91093471|ref|XP_967620.1| PREDICTED: similar to anopheles stephensi ubiquitin, putative [Tribolium castaneum] FS914988 fwgP ...

  20. EST Table: FS900811 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS900811 E_FL_ftes_40G04_R_0 10/09/28 35 %/117 aa ref|XP_967620.1| PREDICTED: similar to anopheles stephen... %/144 aa gnl|Amel|GB19565-PA 10/09/10 35 %/117 aa gi|91093471|ref|XP_967620.1| PREDICTED: similar to anopheles stephensi ubiquitin, putative [Tribolium castaneum] FS788262 ftes ...

  1. EST Table: FS915066 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS915066 E_FL_fufe_34C05_F_0 10/09/28 35 %/122 aa ref|XP_967620.1| PREDICTED: similar to anopheles stephen... %/149 aa gnl|Amel|GB19565-PA 10/09/10 35 %/122 aa gi|91093471|ref|XP_967620.1| PREDICTED: similar to anopheles stephensi ubiquitin, putative [Tribolium castaneum] FS914988 fufe ...

  2. EST Table: FS854155 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS854155 E_FL_fner_48F23_F_0 10/09/28 35 %/122 aa ref|XP_967620.1| PREDICTED: similar to anopheles stephen... %/149 aa gnl|Amel|GB19565-PA 10/09/10 35 %/122 aa gi|91093471|ref|XP_967620.1| PREDICTED: similar to anopheles stephensi ubiquitin, putative [Tribolium castaneum] FS914988 fner ...

  3. EST Table: FS788376 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS788376 E_FL_fcaL_24G15_R_0 10/09/28 50 %/137 aa ref|XP_975194.1| PREDICTED: similar to something.../116 aa gnl|Amel|GB19080-PA 10/09/10 50 %/137 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS823506 fcaL ...

  4. EST Table: FS877343 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS877343 E_FL_ftes_09I06_F_0 10/09/28 48 %/136 aa ref|XP_975194.1| PREDICTED: similar to something.../146 aa gnl|Amel|GB19080-PA 10/09/10 48 %/136 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 ftes ...

  5. EST Table: FS895931 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS895931 E_FL_ftes_20D04_R_0 10/09/28 48 %/263 aa ref|XP_975194.1| PREDICTED: similar to something.../309 aa gnl|Amel|GB19080-PA 10/09/10 48 %/263 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS823506 ftes ...

  6. EST Table: FS771043 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS771043 E_FL_fcaL_21B10_F_0 10/09/28 50 %/102 aa ref|XP_975194.1| PREDICTED: similar to something.../109 aa gnl|Amel|GB19080-PA 10/09/10 50 %/102 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 fcaL ...

  7. EST Table: FS909077 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS909077 E_FL_fufe_16C10_F_0 10/09/28 45 %/224 aa ref|XP_975194.1| PREDICTED: similar to something.../236 aa gnl|Amel|GB19080-PA 10/09/10 45 %/224 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 fufe ...

  8. EST Table: FS773374 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS773374 E_FL_fcaL_01E22_R_0 10/09/28 46 %/259 aa ref|XP_975194.1| PREDICTED: similar to something.../265 aa gnl|Amel|GB19080-PA 10/09/10 46 %/259 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS823506 fcaL ...

  9. EST Table: FS783759 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS783759 E_FL_fcaL_45F03_R_0 10/09/28 49 %/292 aa ref|XP_975194.1| PREDICTED: similar to something.../298 aa gnl|Amel|GB19080-PA 10/09/10 49 %/292 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS823506 fcaL ...

  10. EST Table: FS787334 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS787334 E_FL_fcaL_21B10_R_0 10/09/28 47 %/229 aa ref|XP_975194.1| PREDICTED: similar to something.../235 aa gnl|Amel|GB19080-PA 10/09/10 47 %/229 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS823506 fcaL ...

  11. EST Table: FS756160 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS756160 E_FL_fcaL_01E22_F_0 10/09/28 45 %/124 aa ref|XP_975194.1| PREDICTED: similar to something.../134 aa gnl|Amel|GB19080-PA 10/09/10 45 %/124 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 fcaL ...

  12. EST Table: FS915025 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS915025 E_FL_fufe_34A03_F_0 10/09/28 41 %/189 aa ref|XP_975194.1| PREDICTED: similar to something.../200 aa gnl|Amel|GB19080-PA 10/09/10 41 %/189 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 fufe ...

  13. EST Table: FS772104 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS772104 E_FL_fcaL_24G15_F_0 10/09/28 50 %/114 aa ref|XP_975194.1| PREDICTED: similar to something.../125 aa gnl|Amel|GB19080-PA 10/09/10 50 %/114 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 fcaL ...

  14. EST Table: FS863113 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS863113 E_FL_fner_20N15_R_0 10/09/28 48 %/243 aa ref|XP_975194.1| PREDICTED: similar to something.../249 aa gnl|Amel|GB19080-PA 10/09/10 48 %/243 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS823506 fner ...

  15. EST Table: FS892889 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS892889 E_FL_ftes_09I06_R_0 10/09/28 48 %/279 aa ref|XP_975194.1| PREDICTED: similar to something.../295 aa gnl|Amel|GB19080-PA 10/09/10 48 %/279 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS823506 ftes ...

  16. EST Table: FS918452 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS918452 E_FL_fufe_44G17_F_0 10/09/28 46 %/244 aa ref|XP_975194.1| PREDICTED: similar to something.../253 aa gnl|Amel|GB19080-PA 10/09/10 46 %/244 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 fufe ...

  17. EST Table: FS881026 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS881026 E_FL_ftes_20D04_F_0 10/09/28 48 %/142 aa ref|XP_975194.1| PREDICTED: similar to something.../146 aa gnl|Amel|GB19080-PA 10/09/10 48 %/142 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 ftes ...

  18. EST Table: FS844460 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS844460 E_FL_fner_20N15_F_0 10/09/28 50 %/102 aa ref|XP_975194.1| PREDICTED: similar to something.../109 aa gnl|Amel|GB19080-PA 10/09/10 50 %/102 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 fner ...

  19. EST Table: FS804514 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS804514 E_FL_fmgV_15G04_F_0 10/09/28 46 %/124 aa ref|XP_975194.1| PREDICTED: similar to something.../134 aa gnl|Amel|GB19080-PA 10/09/10 46 %/124 aa gi|91081571|ref|XP_975194.1| PREDICTED: similar to something about silencing protein 10 [Tribolium castaneum] FS937283 fmgV ...

  20. EST Table: FS899341 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS899341 E_FL_ftes_34E24_R_0 10/09/28 39 %/198 aa ref|XP_971046.2| PREDICTED: similar to antolefin...0 low homology 10/09/10 39 %/152 aa gnl|Amel|GB16043-PA 10/09/10 39 %/198 aa gi|189240340|ref|XP_971046.2| PREDICTED: similar to antolefinin [Tribolium castaneum] FS752084 ftes ...

  1. EST Table: FS752084 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available P_971046.2| PREDICTED: similar to antolefinin [Tribolium castaneum] FS752084 caL- ... ...FS752084 E_ET_caL-_07O17_R_0 11/12/09 n.h 10/09/28 39 %/198 aa ref|XP_971046.2| PREDICTED: similar to antole...finin [Tribolium castaneum] 10/09/08 34 %/152 aa FBpp0116483|DanaGF13291-PA 10/08/2

  2. EST Table: FS864234 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS864234 E_FL_fner_24L14_R_0 10/09/28 38 %/198 aa ref|XP_971046.2| PREDICTED: similar to antolefin...0 low homology 10/09/10 39 %/152 aa gnl|Amel|GB16043-PA 10/09/10 38 %/198 aa gi|189240340|ref|XP_971046.2| PREDICTED: similar to antolefinin [Tribolium castaneum] FS752084 fner ...

  3. EST Table: FS747012 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS747012 E_ET_caL-_07O17_F_0 10/09/28 39 %/183 aa ref|XP_971046.2| PREDICTED: similar to antolefin... %/135 aa gnl|Amel|GB16043-PA 10/09/10 39 %/183 aa gi|189240340|ref|XP_971046.2| PREDICTED: similar to antolefinin [Tribolium castaneum] FS921551 caL- ...

  4. EST Table: FS725996 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS725996 E_FL_bmmt_06E05_F_0 10/09/28 55 %/109 aa ref|XP_968887.1| PREDICTED: similar to cleft...gnl|Amel|GB16225-PA 10/09/10 55 %/109 aa gi|91081299|ref|XP_968887.1| PREDICTED: similar to cleft lip and palate transmembrane protein 1 [Tribolium castaneum] FS920349 bmmt ...

  5. EST Table: FS837816 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS837816 E_FL_fner_02D05_F_0 10/09/28 55 %/109 aa ref|XP_968887.1| PREDICTED: similar to cleft...gnl|Amel|GB16225-PA 10/09/10 55 %/109 aa gi|91081299|ref|XP_968887.1| PREDICTED: similar to cleft lip and palate transmembrane protein 1 [Tribolium castaneum] FS920349 fner ...

  6. EST Table: FS871997 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS871997 E_FL_fner_47A15_R_0 11/12/09 n.h 10/09/28 56 %/289 aa ref|XP_967727.1| PRE...el|GB11162-PA 10/09/10 56 %/289 aa gi|91079316|ref|XP_967727.1| PREDICTED: similar to GA15241-PA [Tribolium castaneum] FS871997 fner ...

  7. EST Table: FS822271 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS822271 E_FL_fmgV_11P16_R_0 11/12/09 n.h 10/09/28 75 %/112 aa ref|XP_001656149.1| fetal alzheimer... antigen, falz [Aedes aegypti] gb|EAT35210.1| fetal alzheimer antigen, falz [Aedes aegypti] 1...8 %/115 aa gi|189240808|ref|XP_001811424.1| PREDICTED: similar to fetal alzheimer antigen, falz [Tribolium castaneum] FS822271 fmgV ...

  8. EST Table: FS819676 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS819676 E_FL_fmgV_04L09_R_0 11/12/09 GO hit GO:0005975(carbohydrate metabolic proc...ene:AGAP005956 10/09/10 54 %/161 aa gnl|Amel|GB11286-PA 10/09/10 55 %/159 aa gi|91090686|ref|XP_974615.1| PREDICTED: similar to ribitol kinase [Tribolium castaneum] FS819676 fmgV ...

  9. EST Table: FS881995 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS881995 E_FL_ftes_22P19_F_0 11/12/09 GO hit GO:0008553(hydrogen-exporting ATPase a...09/10 74 %/145 aa gnl|Amel|GB13596-PA 10/09/10 74 %/145 aa gi|270009266|gb|EFA05714.1| hypothetical protein TcasGA2_TC015322 [Tribolium castaneum] FS881995 ftes ...

  10. EST Table: FS819954 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS819954 E_FL_fmgV_05I06_R_0 11/12/09 n.h 10/09/28 79 %/142 aa ref|NP_001091815.1| ...gnl|Amel|GB20002-PA 10/09/10 50 %/142 aa gi|270000743|gb|EEZ97190.1| hypothetical protein TcasGA2_TC004377 [Tribolium castaneum] FS819954 fmgV ...

  11. EST Table: FS825912 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS825912 E_FL_fmgV_22B23_R_0 10/09/28 65 %/235 aa ref|NP_001164203.1| cannonball [T...ribolium castaneum] gb|EFA04573.1| cannonball [Tribolium castaneum] 10/09/10 57 %/236 aa FBpp0170014|DmojGI2...%/235 aa gi|270008125|gb|EFA04573.1| cannonball [Tribolium castaneum] FS786025 fmgV ...

  12. EST Table: FS774579 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS774579 E_FL_fcaL_05D18_R_0 10/09/28 60 %/153 aa ref|NP_001164203.1| cannonball [T...ribolium castaneum] gb|EFA04573.1| cannonball [Tribolium castaneum] 10/09/08 49 %/161 aa FBpp0170014|DmojGI2...%/153 aa gi|270008125|gb|EFA04573.1| cannonball [Tribolium castaneum] FS786025 fcaL ...

  13. EST Table: FS938903 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available 0 aa gi|189235487|ref|XP_968396.2| PREDICTED: similar to failed axon connections protein [Tribolium castaneum] FS937483 fwgP ... ...FS938903 E_FL_fwgP_53F15_F_0 10/09/28 60 %/190 aa ref|XP_968396.2| PREDICTED: similar to failed axon connect...ions protein [Tribolium castaneum] 10/09/13 75 %/132 aa FBpp0166084|DmojGI16867-PA

  14. EST Table: FS939195 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available 4 aa gi|189235487|ref|XP_968396.2| PREDICTED: similar to failed axon connections protein [Tribolium castaneum] FS937483 fwgP ... ...FS939195 E_FL_fwgP_54D09_F_0 10/09/28 59 %/184 aa ref|XP_968396.2| PREDICTED: similar to failed axon connect...ions protein [Tribolium castaneum] 10/09/13 73 %/126 aa FBpp0286407|DpseGA18298-PA

  15. EST Table: FS930987 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS930987 E_FL_fwgP_29N09_F_0 10/09/28 64 %/130 aa ref|XP_001865018.1| suppression of tumorigen...icity [Culex quinquefasciatus] gb|EDS41077.1| suppression of tumorigenicity [Culex quinquefasciat...09/10 62 %/130 aa gi|91091438|ref|XP_972410.1| PREDICTED: similar to suppression of tumorigenicity [Tribolium castaneum] FS881106 fwgP ...

  16. EST Table: FS881106 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS881106 E_FL_ftes_20G18_F_0 11/12/09 n.h 10/09/28 52 %/186 aa ref|XP_001865018.1| suppression of tumorigen...icity [Culex quinquefasciatus] gb|EDS41077.1| suppression of tumorigenicity [Culex q...B15913-PA 10/09/10 50 %/186 aa gi|91091438|ref|XP_972410.1| PREDICTED: similar to suppression of tumorigenicity [Tribolium castaneum] FS881106 ftes ...

  17. EST Table: FS905729 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS905729 E_FL_fufe_05P17_F_0 10/09/28 64 %/289 aa ref|XP_968073.1| PREDICTED: similar to Longevity...gene:AGAP001761 10/09/10 n.h 10/09/10 64 %/289 aa gi|91087843|ref|XP_968073.1| PREDICTED: similar to Longevity assurance gene 1 CG3576-PB [Tribolium castaneum] FS764148 fufe ...

  18. EST Table: FS824678 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available f|XP_971868.2| PREDICTED: similar to esophageal cancer associated protein [Tribolium castaneum] FS824678 fmgV ... ...phageal cancer associated protein [Nasonia vitripennis] 10/09/10 39 %/103 aa FBpp01...FS824678 E_FL_fmgV_18K16_R_0 11/12/09 n.h 10/09/28 46 %/114 aa ref|XP_001604914.1| PREDICTED: similar to eso

  19. EST Table: FS738045 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS738045 E_FL_bmmt_10H23_R_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/28 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS754399 bmmt ...

  20. EST Table: FS729658 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS729658 E_FL_bmmt_16K10_F_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/28 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS794322 bmmt ...

  1. EST Table: FS788234 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS788234 E_FL_fcaL_23O24_R_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/28 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS754399 fcaL ...

  2. EST Table: FS788759 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS788759 E_FL_fcaL_25K10_R_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/28 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS754399 fcaL ...

  3. EST Table: FS904178 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS904178 E_FL_fufe_01D10_F_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/29 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS794322 fufe ...

  4. EST Table: FS887527 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS887527 E_FL_ftes_39I21_F_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/29 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS794322 ftes ...

  5. EST Table: FS905468 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS905468 E_FL_fufe_05C09_F_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/29 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS794322 fufe ...

  6. EST Table: FS772497 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS772497 E_FL_fcaL_25K10_F_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/28 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS794322 fcaL ...

  7. EST Table: FS906912 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS906912 E_FL_fufe_09J16_F_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/29 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS794322 fufe ...

  8. EST Table: FS900584 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS900584 E_FL_ftes_39I21_R_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/29 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS754399 ftes ...

  9. EST Table: FS909967 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS909967 E_FL_fufe_18N04_F_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/29 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS794322 fufe ...

  10. EST Table: FS727482 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS727482 E_FL_bmmt_10H23_F_0 10/09/28 65 %/144 aa ref|XP_974854.1| PREDICTED: similar to cornicho...8/28 43 %/144 aa T09E8.3#CE23961#WBGene00011648#cornichon protein like#status:Confirmed#UniProt:Q22361#prote...| PREDICTED: similar to cornichon protein, putative [Tribolium castaneum] FS794322 bmmt ...

  11. EST Table: FS840960 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS840960 E_FL_fner_11A09_F_0 11/12/09 n.h 10/09/28 87 %/139 aa ref|XP_001659698.1| liquid facets... [Aedes aegypti] gb|EAT39088.1| liquid facets [Aedes aegypti] 10/09/10 88 %/136 aa FBpp0227429|...A 10/09/10 84 %/143 aa gi|189240526|ref|XP_972038.2| PREDICTED: similar to liquid facets [Tribolium castaneum] FS840960 fner ...

  12. EST Table: FS771867 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS771867 E_FL_fcaL_23K08_F_0 10/09/28 87 %/139 aa ref|XP_001659698.1| liquid facets... [Aedes aegypti] gb|EAT39088.1| liquid facets [Aedes aegypti] 10/09/08 88 %/136 aa FBpp0227429|DvirGJ13012-P... %/143 aa gi|189240526|ref|XP_972038.2| PREDICTED: similar to liquid facets [Tribolium castaneum] FS840960 fcaL ...

  13. EST Table: FS892940 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available 108 aa gi|91094187|ref|XP_970998.1| PREDICTED: similar to Evolutionarily conserved signaling intermediate in Toll pathway, mitochondrial [Tribolium castaneum] FS892940 ftes ... ...FS892940 E_FL_ftes_09L06_R_0 11/12/09 n.h 10/09/28 63 %/108 aa ref|XP_970998.1| PREDICTED: similar to Evolut...ionarily conserved signaling intermediate in Toll pathway, mitochondrial [Tribolium

  14. EST Table: FS875608 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS875608 E_FL_ftes_04F20_F_0 10/09/28 45 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...45 %/151 aa gnl|Amel|GB14856-PA 10/09/10 45 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS906679 ftes ...

  15. EST Table: FS895588 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS895588 E_FL_ftes_18N10_R_0 10/09/28 46 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...46 %/151 aa gnl|Amel|GB14856-PA 10/09/10 46 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS891321 ftes ...

  16. EST Table: FS803374 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS803374 E_FL_fmgV_12D12_F_0 10/09/28 45 %/149 aa ref|XP_973163.1| PREDICTED: similar to jump...46 %/150 aa gnl|Amel|GB14856-PA 10/09/10 45 %/149 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS906679 fmgV ...

  17. EST Table: FS862828 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS862828 E_FL_fner_20A08_R_0 10/09/28 46 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...46 %/151 aa gnl|Amel|GB14856-PA 10/09/10 46 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS891321 fner ...

  18. EST Table: FS844168 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS844168 E_FL_fner_20A08_F_0 10/09/28 45 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...45 %/151 aa gnl|Amel|GB14856-PA 10/09/10 45 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS906679 fner ...

  19. EST Table: FS787608 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS787608 E_FL_fcaL_21P07_R_0 10/09/28 46 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...46 %/151 aa gnl|Amel|GB14856-PA 10/09/10 46 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS891321 fcaL ...

  20. EST Table: FS928974 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS928974 E_FL_fwgP_23N08_F_0 10/09/28 45 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...45 %/151 aa gnl|Amel|GB14856-PA 10/09/10 45 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS906679 fwgP ...

  1. EST Table: FS865993 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS865993 E_FL_fner_29M11_R_0 10/09/28 46 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...46 %/151 aa gnl|Amel|GB14856-PA 10/09/10 46 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS891321 fner ...

  2. EST Table: FS923051 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS923051 E_FL_fwgP_06G17_F_0 10/09/28 45 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...45 %/151 aa gnl|Amel|GB14856-PA 10/09/10 45 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS906679 fwgP ...

  3. EST Table: FS771324 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS771324 E_FL_fcaL_21P07_F_0 10/09/28 46 %/146 aa ref|XP_973163.1| PREDICTED: similar to jump...45 %/146 aa gnl|Amel|GB14856-PA 10/09/10 46 %/146 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS906679 fcaL ...

  4. EST Table: FS880548 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS880548 E_FL_ftes_18N10_F_0 10/09/28 45 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...45 %/151 aa gnl|Amel|GB14856-PA 10/09/10 45 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS906679 ftes ...

  5. EST Table: FS891805 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS891805 E_FL_ftes_04F20_R_0 10/09/28 46 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...46 %/151 aa gnl|Amel|GB14856-PA 10/09/10 46 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS891321 ftes ...

  6. EST Table: FS874950 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS874950 E_FL_ftes_02G24_F_0 10/09/28 45 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...45 %/151 aa gnl|Amel|GB14856-PA 10/09/10 45 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS906679 ftes ...

  7. EST Table: FS847583 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS847583 E_FL_fner_29M11_F_0 10/09/28 45 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...45 %/151 aa gnl|Amel|GB14856-PA 10/09/10 45 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS906679 fner ...

  8. EST Table: FS822360 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS822360 E_FL_fmgV_12D12_R_0 10/09/28 46 %/153 aa ref|XP_973163.1| PREDICTED: similar to jump...46 %/151 aa gnl|Amel|GB14856-PA 10/09/10 46 %/153 aa gi|91086783|ref|XP_973163.1| PREDICTED: similar to jumping translocation breakpoint protein [Tribolium castaneum] FS891321 fmgV ...

  9. EST Table: FS802051 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS802051 E_FL_fmgV_08I20_F_0 10/09/28 62 %/109 aa ref|XP_001664237.1| breast cancer metastasis...-suppressor [Aedes aegypti] gb|EAT33713.1| breast cancer metastasis-suppressor [Aedes aegypti] 10...0 59 %/107 aa gi|91080755|ref|XP_966988.1| PREDICTED: similar to breast cancer metastasis-suppressor 1 [Tribolium castaneum] FS939099 fmgV ...

  10. EST Table: FS918672 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS918672 E_FL_fufe_45B07_F_0 10/09/28 57 %/175 aa ref|XP_001664237.1| breast cancer metastasis...-suppressor [Aedes aegypti] gb|EAT33713.1| breast cancer metastasis-suppressor [Aedes aegypti] 10...0 57 %/173 aa gi|91080755|ref|XP_966988.1| PREDICTED: similar to breast cancer metastasis-suppressor 1 [Tribolium castaneum] FS939099 fufe ...

  11. EST Table: FS784354 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS784354 E_FL_fcaL_47E21_R_0 10/09/28 59 %/159 aa ref|XP_968944.1| PREDICTED: similar to tout.../10 55 %/159 aa gnl|Amel|GB17343-PA 10/09/10 59 %/159 aa gi|91076108|ref|XP_968944.1| PREDICTED: similar to tout-velu CG10117-PA [Tribolium castaneum] FS826934 fcaL ...

  12. EST Table: FS919842 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS919842 E_FL_fufe_48J09_F_0 11/12/09 GO hit GO:0003735(structural constituent of r...-1|gene:AGAP000508 10/09/10 60 %/164 aa gnl|Amel|GB10944-PA 10/09/10 60 %/187 aa gi|189236859|ref|XP_974352.2| PREDICTED: similar to GA18397-PA [Tribolium castaneum] FS919842 fufe ...

  13. EST Table: FS819984 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS819984 E_FL_fmgV_05J15_R_0 11/12/09 n.h 10/09/28 66 %/214 aa ref|XP_001655946.1| ...PA 10/09/10 66 %/216 aa gi|91076622|ref|XP_969602.1| PREDICTED: similar to CG10050 CG10050-PA [Tribolium castaneum] FS819984 fmgV ...

  14. EST Table: FS790109 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available 86181|ref|XP_971039.1| PREDICTED: similar to scaffold protein salvador (shar-pei) [Tribolium castaneum] FS920136 ffbm ... ...ar to scaffold protein salvador (shar-pei) [Tribolium castaneum] 10/09/09 31 %/225 aa FBpp0159976|DmojGI1075...FS790109 E_FL_ffbm_02K08_F_0 10/09/28 37 %/312 aa ref|XP_971039.1| PREDICTED: simil

  15. EST Table: FS935751 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available 86181|ref|XP_971039.1| PREDICTED: similar to scaffold protein salvador (shar-pei) [Tribolium castaneum] FS920136 fwgP ... ...ar to scaffold protein salvador (shar-pei) [Tribolium castaneum] 10/09/13 30 %/208 aa FBpp0159976|DmojGI1075...FS935751 E_FL_fwgP_43P13_F_0 10/09/28 37 %/295 aa ref|XP_971039.1| PREDICTED: simil

  16. EST Table: FS881885 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS881885 E_FL_ftes_22K18_F_0 11/12/09 GO hit GO:0006486(protein amino acid glycosyl.../29 n.h 10/09/10 36 %/105 aa AGAP000365-PA Protein|X:6766782:6768196:-1|gene:AGAP000365 10/09/10 38 %/109 aa gnl|Amel|GB17182-PA 10/09/10 low homology FS881885 ftes ...

  17. EST Table: FS819854 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS819854 E_FL_fmgV_05D11_R_0 11/12/09 GO hit GO:0006122(mitochondrial electron tran...carrier activity)|GO:0031966(mitochondrial membrane) 10/09/28 n.h 10/09/10 n.h 10/08/29 n.h 10/09/10 n.h 10/09/10 n.h 10/09/10 n.h FS819854 fmgV ...

  18. EST Table: FS736136 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS736136 E_FL_bmmt_05B11_R_0 10/09/28 32 %/210 aa ref|XP_972036.1| PREDICTED: simil...gy 10/09/10 n.h 10/09/10 32 %/210 aa gi|91088865|ref|XP_972036.1| PREDICTED: similar to CG7702 CG7702-PA [Tribolium castaneum] FS834274 bmmt ...

  19. EST Table: FS880328 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS880328 E_FL_ftes_18D01_F_0 10/09/28 34 %/186 aa ref|XP_001650131.1| house keeping...protein, putative [Aedes aegypti] gb|ABF18502.1| peroxisomal biogenesis factor 19 [Aedes aegypti] gb|EAT43591.1| house keeping...2 aa gi|91084677|ref|XP_968216.1| PREDICTED: similar to house keepingprotein, putative [Tribolium castaneum] FS934454 ftes ...

  20. EST Table: FS896014 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS896014 E_FL_ftes_20I10_R_0 10/09/28 46 %/262 aa ref|XP_974065.1| PREDICTED: similar to Outer dense fiber... protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber pro...DICTED: similar to Outer dense fiber protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber protein) (Cenexin) [Tribolium castaneum] FS893448 ftes ...

  1. EST Table: FS893822 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS893822 E_FL_ftes_12P11_R_0 10/09/28 47 %/258 aa ref|XP_974065.1| PREDICTED: similar to Outer dense fiber... protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber pro...DICTED: similar to Outer dense fiber protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber protein) (Cenexin) [Tribolium castaneum] FS893448 ftes ...

  2. EST Table: FS903628 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS903628 E_FL_ftes_51L18_R_0 10/09/28 47 %/257 aa ref|XP_974065.1| PREDICTED: similar to Outer dense fiber... protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber pro...DICTED: similar to Outer dense fiber protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber protein) (Cenexin) [Tribolium castaneum] FS893448 ftes ...

  3. EST Table: FS897753 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS897753 E_FL_ftes_28E17_R_0 10/09/28 47 %/256 aa ref|XP_974065.1| PREDICTED: similar to Outer dense fiber... protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber pro...DICTED: similar to Outer dense fiber protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber protein) (Cenexin) [Tribolium castaneum] FS893448 ftes ...

  4. EST Table: FS894471 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS894471 E_FL_ftes_15C05_R_0 10/09/28 47 %/260 aa ref|XP_974065.1| PREDICTED: similar to Outer dense fiber... protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber pro...DICTED: similar to Outer dense fiber protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber protein) (Cenexin) [Tribolium castaneum] FS893448 ftes ...

  5. EST Table: FS901584 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS901584 E_FL_ftes_43M21_R_0 10/09/28 35 %/178 aa ref|XP_974065.1| PREDICTED: similar to Outer dense fiber... protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber pro...DICTED: similar to Outer dense fiber protein 2 (Outer dense fiber of sperm tails protein 2) (84 kDa outer dense fiber protein) (Cenexin) [Tribolium castaneum] FS893448 ftes ...

  6. EST Table: FS823901 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS823901 E_FL_fmgV_16H20_R_0 11/12/09 n.h 10/09/28 low homology 10/09/10 low homolo...gy 10/08/29 low homology 10/09/10 low homology 10/09/10 low homology 10/09/10 low homology FS823901 fmgV ...

  7. EST Table: FS920143 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS920143 E_FL_fufe_49H24_F_0 11/12/09 GO hit GO:0005874(microtubule)|GO:0007021(tub...:AGAP002130 10/09/10 59 %/109 aa gnl|Amel|GB17804-PA 10/09/10 60 %/109 aa gi|91091982|ref|XP_969241.1| PREDICTED: similar to AGAP002130-PA [Tribolium castaneum] FS920143 fufe ...

  8. EST Table: FS743872 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available FS743872 E_FL_bmmt_26O01_R_0 10/09/28 61 %/177 aa ref|XP_972967.1| PREDICTED: similar to Sirt4... 10/09/10 51 %/198 aa gnl|Amel|GB11699-PA 10/09/10 61 %/177 aa gi|91085237|ref|XP_972967.1| PREDICTED: similar to Sirt4 CG3187-PC [Tribolium castaneum] FS902423 bmmt ...

  9. Pulse plating

    CERN Document Server

    Hansal, Wolfgang E G; Green, Todd; Leisner, Peter; Reichenbach, Andreas

    2012-01-01

    The electrodeposition of metals using pulsed current has achieved practical importance in recent years. Although it has long been known that changes in potential, with or without polarity reversal, can significantly affect the deposition process, the practical application of this has been slow to be adopted. This can largely be explained in terms of the complex relationship between the current regime and its effect on the electrodeposition process. In order to harness these effects, an understanding of the anodic and cathodic electrochemical processes is necessary, together with the effects of polarity reversal and the rate of such reversals. In this new monograph, the basics of metal electrodeposition from solution are laid out in great detail in seven distinct chapters. With this knowledge, the reader is able to predict how a given pulse train profile can be adopted to achieve a desired outcome. Equally important is the choice of a suitable rectifier and the ancillary control circuits to enable pulse platin...

  10. Ultrafast demagnetization for Ni{sub 80}Fe{sub 20} and half-metallic Co{sub 2}MnSi heusler alloy films

    Energy Technology Data Exchange (ETDEWEB)

    Mizukami, S; Watanabe, D; Miyazaki, T [WPI-Advanced Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai 980-8577 (Japan); Tsunegi, S; Kubota, T; Oogane, M; Naganuma, H; Ando, Y, E-mail: mizukami@wpi-aimr.tohoku.ac.j [Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aoba 5-5-06, Sendai 980-8579 (Japan)

    2010-01-01

    We investigated ultrafast demagnetization for NM/Ni{sub 80}Fe{sub 20} (Py)/NM (NM=Ta,Pt) and epitaxial half-metallic Co{sub 2}MnSi (CMS) films using an all-optical pump-probe technique to clarify the correlation between demagnetization time {tau}{sub M} and magnetic damping constant {alpha} or spin polarization. The signal from the all-optical time-resolved magneto-optical Kerr effect exhibited rapid decrease in the sub-ps time regime and damped oscillations for these films. Values of {tau}{sub M} and {alpha} were evaluated using the three- temperature model and the Landau-Lifshitz-Gilbert equation. The {alpha} values for the NM/Py/NM films depended on both the Py thickness and NM materials while {tau}{sub M} was almost constant. The {tau}{sub M} values for the epitaxial CMS films were almost independent of L2{sub 1}-ordering and a little shorter than those for NM/Py/NM films.

  11. Diffuse scattering from an Al{sub 72}Ni{sub 20}Co{sub 8} decagonal quasicrystal on an order-disorder transformation

    Energy Technology Data Exchange (ETDEWEB)

    Abe, H [Department of Materials Science and Engineering, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka 239-8686 (Japan); Saitoh, H [Institute of Materials Science, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8573 (Japan); Ueno, T [Institute of Materials Science, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8573 (Japan); Nakao, H [Department of Physics, Tohoku University, Sendai 980-8578 (Japan); Matsuo, Y [Department of Physics, Nara Women' s University, Kitauoya-Higasi, Nara 630-8506 (Japan); Ohshima, K [Institute of Materials Science, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8573 (Japan); Matsumoto, H [Department of Materials Science and Engineering, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka 239-8686 (Japan)

    2003-03-19

    Non-uniform distortion induced by superstructure domains has been observed during the ordering process of an order-disorder transformation in a single decagonal quasicrystal of Al{sub 72}Ni{sub 20}Co{sub 8}. The full width at half maximum (FWHM) of the fundamental reflections increased below the transformation temperature, T{sub c}. At the same time, the integrated intensity of the fundamental reflections varied drastically at T{sub c}. A small hysteresis was also observed in the temperature dependences of both the FWHM and the integrated intensity of the fundamental reflections. Peak broadening of the fundamental reflections is predominantly dependent on |G{sup par}| below T{sub c}. In addition, the weak dependence of the peak broadening with |G{sup perp}| is extracted from the observed FWHM of the fundamental reflections. After deconvolution, the FWHM of the fundamental reflections appears to be a linear combination of |G{sup par}| and |G{sup perp}|. Coexistence of the non-uniform distortion and of the random phason strain contributes to the ordering process below T{sub c}. The diffuse scattering from atomic short-range order (SRO) was distributed around the ideal positions of the superstructure reflections. The SRO diffuse scattering disappeared completely above T{sub c} + 10 K. In addition, a small hysteresis of the SRO diffuse scattering was found in the temperature cycle.

  12. Experimental demonstration of 55-fs spin canting in photoexcited iron nanoarrays

    Science.gov (United States)

    Ren, Yuhang; Lai, Wei; Cevher, Zehra; Gong, Yu; Zhang, G. P.

    2017-02-01

    As magnetic storage density approaches 1TB/in2, a grand challenge is looming as how to read/write such a huge amount of data within a reasonable time. The ultrafast optical manipulation of magnetization offers a solution, but little is known about the intrinsic speed limit of quantum spin switching. Here, we report that low-energy 50-fs laser pulses can induce spin canting in Fe nanoparticles within 55 fs, breaking the previous record by at least one order of magnitude. Both linearly and circularly polarized light can be used to tilt spins. In our model, the incident laser field first excites the orbital angular momentum, and through spin-orbit coupling, the spin cants out-of-plane and results in a distinctive diamond hysteresis loop. The spin canting time decreases with spin angular momentum. This spin canting is not limited to Fe nanoparticles and is also observed in Fe/Pt and Fe3O4 nanoparticles. Our results demonstrate the potential of magnetic nanostructures as a viable magnetic medium for high density and fast-switching magnetic storage devices.

  13. Determination of the temporal structure of femtosecond laser pulses by means of laser-induced air plasma

    Science.gov (United States)

    Zhang, Nan; Bao, Wen-Xia; Yang, Jing-Hui; Zhu, Xiao-Nong

    2013-05-01

    A new approach is presented to reveal the temporal structure of femtosecond laser pulses by recording the corresponding time-resolved shadowgraphs of the laser-induced air plasma. It is shown that the temporal structures of femtosecond laser pulses, normally not observable by the ordinary intensity autocorrelator, can be detected through intuitively analyzing the ultrafast evolution process of the air plasma induced by the femtosecond laser pulses under examination. With this method, existence of pre- and post-pulses has been clearly unveiled within the time window of ±150 fs in reference with the main 50-fs laser pulses output from a commercial 1-kHz femtosecond laser amplifier. The unique advantage of the proposed method is that it can directly provide valuable information about the pulse temporal structures' effect on the laser-induced ionization or material ablation.

  14. [Scanning electron microscopic investigations of cutting edge quality in lamellar keratotomy using the Wavelight femtosecond laser (FS-200) : What influence do spot distance and an additional tunnel have?

    Science.gov (United States)

    Hammer, T; Höche, T; Heichel, J

    2018-01-01

    Femtosecond lasers (fs-lasers) are established cutting instruments for the creation of LASIK flaps. Previous studies often showed even rougher surfaces after application of fs-laser systems compared to lamellar keratotomy with mechanical microkeratomes. When cutting the cornea with fs-lasers, an intrastromal gas development occurs, which has a potentially negative influence on the cutting quality if the gas cannot be dissipated; therefore, manufacturers have chosen the way of gas assimilation in so-called pockets. The investigated system creates a tunnel which opens under the conjunctiva. The aim of this study was to investigate the effects of a tunnel as well as the influence of different spot distances on the quality of cut surfaces and edges. In this experimental study on freshly enucleated porcine eyes (n = 15), the following cuts were carried out with the FS-200 (Wavelight, Erlangen, Germany): 1. standard setting (spot and line separation 8 µm), 2. with tunnel for gas drainage, 3. without gas-conducting tunnel, 4. with increased spot spacing (spot and line separation 9 μm instead of 8 μm) and 5. with reduced spot spacing (spot and line separation 7 μm instead of 8 μm). Subsequently, scanning electron microscopy (FEI Quanta 650, Hillsboro, OR) of the cut edges and surfaces as well as the gas drain tunnel were performed. The evaluation was based on an established score. The current fs-laser system (200 Hz) is able to create smooth cutting surfaces and sharp edges. The changed density of laser pulses compared to the standard settings with a reduced or increased distance between the pulses, did not achieve any further improvement in the surface quality. The gas-conducting tunnel could be detected by scanning electron microscope. In the case of cutting without a tunnel, roughened surfaces and irregularities on the cutting edges were found. When the FS-200 fs-laser is used, LASIK cuts with very smooth cut surfaces and sharp cutting

  15. Time-resolved microscopy of fs-laser-induced heat flows in glasses

    Science.gov (United States)

    Bonse, Jörn; Seuthe, Thomas; Grehn, Moritz; Eberstein, Markus; Rosenfeld, Arkadi; Mermillod-Blondin, Alexandre

    2018-01-01

    Time-resolved phase-contrast microscopy is employed to visualize spatio-temporal thermal transients induced by tight focusing of a single Ti:sapphire fs-laser pulse into a solid dielectric sample. This method relies on the coupling of the refractive index change and the sample temperature through the thermo-optic coefficient d n/d T. The thermal transients are studied on a timescale ranging from 10 ns up to 0.1 ms after laser excitation. Beyond providing direct insights into the laser-matter interaction, analyzing the results obtained also enables quantifying the local thermal diffusivity of the sample on a micrometer scale. Studies conducted in different solid dielectrics, namely amorphous fused silica (a-SiO2), a commercial borosilicate glass (BO33, Schott), and a custom alkaline earth silicate glass (NaSi66), illustrate the applicability of this approach to the investigation of various glassy materials.

  16. Anomalous photo-induced response by double-pulse excitation in the organic conductor (EDO-TTF)2PF6

    Science.gov (United States)

    Onda, Ken; Ogihara, Sho; Ishikawa, Tadahiko; Okimoto, Yoichi; Shao, Xiangfeng; Nakano, Yoshiaki; Yamochi, Hideki; Saito, Gunzi; Koshihara, Shin-ya

    2009-02-01

    We measured ultrafast reflectivity changes induced by double-pulse excitation in the organic conductor (EDO-TTF)2PF6. Using double-pulse excitation with a relatively high intensity, the sign of reflectivity change became reversed at around 0.8 ps and subsequently the reflectivity change reverted to that of the normal photo-induced state after about 1 ps. Using a optically phase-locked double-pulse with low intensity, we found that the temporal profile excited by an in-phase double-pulse differs from that by an out-of-phase double-pulse despite the time difference between the double-pulses being only 1.31 fs. This was true even when there is almost no overlap between each pulse in the double-pulse. These results indicate that the photo-response in this material to double-pulse excitation differs greatly from the linear sum of the responses to single pulses.

  17. Medical and biological applications for ultrafast laser pulses

    Science.gov (United States)

    Lubatschowski, Holger; Heisterkamp, Alexander; Will, Fabian; Singh, Ajoy I.; Serbin, Jesper; Ostendorf, Andreas; Kermani, Omid; Heermann, R.; Welling, Herbert; Ertmer, Wolfgang

    2003-02-01

    Due to the low energy threshold of photodisruption with fs laser pulses, thermal and mechanical side effects are limited to the sub μm range. The neglection of side effects enables the use of ultrashort laser pulses in a broad field of medical applications. Moreover, the interaction process based on nonlinear absorption offers the opportunity to process transparent tissue three dimensionally inside the bulk. We demonstrate the feasibility of surgical procedures in different fields of medical interest: In ophthalmology intrastromal cutting and preparing of corneal flaps for refractive surgery in living animals is presented. Besides, the very low mechanical side effects enables the use of fs-laser in otoralyngology to treat ocecular bones. Moreover, the precise cutting quality can be used in fields of cardiovascular surgery for the treatment of arteriosclerosis as well as in dentistry to remove caries from dental hard tissue.

  18. Generation of 25-TW Femtosecond Laser Pulses at 515 nm with Extremely High Temporal Contrast

    Directory of Open Access Journals (Sweden)

    Marco Hornung

    2015-12-01

    Full Text Available We report on the frequency doubling of femtosecond laser pulses at 1030 nm center wavelength generated from the fully diode-pumped laser system POLARIS. The newly generated pulses at a center wavelength of 515 nm have a pulse energy of 3 J with a pulse duration of 120 fs. On the basis of initially ultra-high contrast seed pulses we expect a temporal intensity contrast better 10 17 200 ps before the peak of the main pulse. We analyzed the temporal intensity contrast from milliseconds to femtoseconds with a dynamic range covering more than 20 orders of magnitude. The pulses were focussed with a f/2-focussing parabola resulting in a peak intensity exceeding 10 20 W / cm 2 . The peak power and intensity are to the best of our knowledge the highest values for 515 nm-laser-pulses achieved so far.

  19. 760  fs diode-pumped mode-locked laser with Yb:LuAG crystal at 1032  nm.

    Science.gov (United States)

    Su, Xian-Cui; Wang, Yi-Ran; He, Jing-Liang; Zhao, Ru-Wei; Zhang, Pei-Xiong; Hang, Yin; Hou, Jia; Zhang, Bai-Tao; Zhao, Shuang

    2015-08-10

    In this study, we experimentally demonstrate the generation of 760 fs pulse duration from a diode-pumped Yb:LuAG mode-locked laser at 1032 nm. At the repetition rate of 58.6 MHz, the maximum average power of 1.07 W was obtained, corresponding to the peak power of 24 kW. To our knowledge, these results represent the shortest pulse duration and highest peak power ever obtained for a 1032 nm mode-locked laser with Yb:LuAG crystal.

  20. Generation of isolated attosecond pulses with double optical gating and electronic dynamics in molecules studied via attosecond pump-probe experiment

    Science.gov (United States)

    Mashiko, Hiroki

    2010-03-01

    Single isolated attosecond pulses are useful tools for studying electron dynamics. Previously, such as pulses can be generated by few cycle 5 fs driving lasers. It is still a technical challenge to reproduce daily such pulses. In order to allow longer driving laser pulses, two optical gating methods of polarization gating and two-color gating are combined. This approach is dubbed double optical gating. Due to less depletion of the ground state population by the leading edge of the field, this technique can produce isolated 250 as pulses using up to ˜25 fs driving laser pulses. Also, the supercontinuous spectra (28-620 eV) can in principle support a 16 as pulse duration, obtained from 8 fs driving lasers. Because of the relaxation on the driving laser requirements, more laboratories can enter the isolated attosecond pulse science field. Pump-probe experiments with such isolated attosecond pulses and IR pulses can provide quantitative information on electronic dynamics. In recent work, the photoelectron spectra of sulfur hexafluoride (SF6) clearly indicates the precise shape of the IR driving pulse (1.5 eV), verifying that isolated ˜400 as pulses (93 eV) are achieved and these pulses produce an instantaneous inner valence ionization in the molecule. The pump-probe spectra of cation fragments resulting from double and triple ionization show 6-7 fs rise times (SF4^2+, SF3^2+, SF2^2+ and S^2+) or decay times (SF^+ and S^+) times governed by the overlap of the IR and XUV pulses. A suppression or enhancement of certain fragmentation channels is tentatively interpreted as resulting from the IR laser exciting the initial cations to higher states that exhibit different decay channels. This type of pump-probe experiment with isolated attosecond pulses is powerful for the study of electronic dynamics as well as resulting nuclear fragmentation measurements.