Sample records for MODELOS OPTICOS (optical models)
from WorldWideScience.org

Sample records 1 - 20 shown. Select sample records:



1

Empleo del tratamiento matricial en el curso de óptica: sistema de lentes/ Using the matrix method in optics: system of lenses

Fuentes Betancourt, J.; Hidalgo Alonso, O.; Calzadilla Amaya, O.; Perez Perdomo, A.
2005-09-01

Resumen en español En la enseñanza del curso de óptica, en la Licenciatura en Física, los estudiantes poseen conocimientos y habilidades operacionales de programas de cómputo, además de conocimientos de Álgebra Lineal, sobre la operación con matrices y determinantes. El método matricial, se emplea ampliamente en el análisis de fenómenos ópticos, aprovechando que muchos sistemas ópticos son susceptibles de ser descritos satisfactoriamente en la aproximación de modelos lineales. (mas) En el presente trabajo se describe el experimento didáctico realizado con la integración de conocimientos de Álgebra, Computación y óptica aplicados a la solución, por medio del método matricial, del diseño de un triplete de Cooke usado en cámaras fotográficas. Se obtiene un buen aprovechamiento por los estudiantes que logran profundizar en el tema lográndose la integración de los conocimientos propuesta inicialmente. Resumen en inglés Undergraduate Physics majors have usually developed knowledge and operational abilities in Linear Algebra, particularly determinants and matrices, and in the use of software. The matrix method is used thoroughly in the analysis of optical phenomena, making good use of that fact so that many optical systems can be satisfactorily describe by linear models. A didactic experiment which integrates knowledge from Algebra, Computers and Optics to design of a Cooke's triplet used (mas) in photographic cameras base on the matrix method, is described in the present work. The students manage to integrate previous knowledge during the problem solving, as initially proposed.

Scientific Electronic Library Online (Spanish)

2

EFECTOS DE LA MODULACIÓN DE FASE CRUZADA SOBRE LA PROPAGACIÓN DE ONDAS EN FIBRA ÓPTICA

Saavedra G, Fideromo; Lamas N, Álvaro; Fernández B, Marco; Cepeda P, Yonatan
2005-12-01

Resumen en español La modulación de fase cruzada (XPM) es un importante fenómeno que limita el desempeño de los sistemas ópticos de alta velocidad. En este trabajo se analizan y realizan tres modelos matemáticos diferentes que nos permiten comprobar y determinar las dependencias de XPM con respecto a la dispersión cromática de la fibra, la separación entre las longitudes de ondas, la potencia y la frecuencia de modulación Resumen en inglés The cross-phase modulation (XPM) is an important phenomenon that limits the performance of the high speed optical systems. In this work three different mathematical models are analyzed and realiced, that they allow to verify and to determine the dependencies of XPM with respect to the chromatic dispersion of the fiber, the separation between the wavelengths, the power and the modulating frequency

Scientific Electronic Library Online (Spanish)

4

Ultrafast random laser emission in a dye-doped silica gel powder

García-Revilla, Sara; Fernández Rodríguez, Joaquín; Illarramendi, María A.; García-Ramiro, Begoña; Balda, Rolindes; Cui, Hongtao; Zayat, Marcos; Levy, David
2008-07-31

Digital.CSIC (Spain)

5

Synchronization scenario of two distant mutually coupled semiconductor lasers

Mulet, Josep; Mirasso, Claudio R.; Heil, Tilmann; Fischer, Ingo
2004-01-14

Digital.CSIC (Spain)

8

Study of some optoelectronics characteristics of InGaAs/InP photodetectors

Muñoz Zurita, Ana L.; Campos Acosta, Joaquín; Pons Aglio, Alicia; Shcherbakov, Alexandre S.; Gómez Jimenez, Carlos; Rojas Santillan, Carlos
2009-01-01

Digital.CSIC (Spain)

9

Stochastic resonance in the presence of spatially localized structures

Rabbiosi, Ivan; Scroggie, Andrew J.; Oppo, Gian-Luca
2003-09-08

Digital.CSIC (Spain)

10

Stochastic entrainment of optical power dropouts

Buldú, Javier M.; García-Ojalvo, Jordi; Mirasso, Claudio R.; Torrent, M. C.
2002-08-16

Digital.CSIC (Spain)

11

Stable droplets and dark-ring cavity solitons in nonlinear optical devices

Gomila, Damià; Colet, Pere; San Miguel, Maxi; Scroggie, Andrew J.; Oppo, Gian-Luca

7 pages, 11 figures. | Two kinds of cavity solitons, stable circular domain walls (droplets) and dark ring cavity solitons, are presented in models of vectorial Kerr resonators and degenerate optical parametric oscillators. These structures are universal in systems with two equivalent homogeneous st...

DRIVER (Spanish)

13

Shape of stars and optical quality of the human eye

Navarro, Rafael; Losada Binué, Mª Ángeles
1997-02-01

Digital.CSIC (Spain)

14

Screening corrections for calculation of electron scattering differential cross sections from polyatomic molecules

Blanco, F.; García Gómez-Tejedor, Gustavo

8 pages, 5 figures.-- PACS nrs.: 31.15.-p; 31.15.Ar; 34.10.+x; 34.80.-i.-- Printed version published Sep 20, 2004. | An ab initio approximate procedure is obtained for the screening correction of molecular differential cross sections calculated in the independent atom approximation. Proposed correct...

DRIVER (Spanish)

16

Row Orientation and Viewing Geometry Effects on Row-structured Crops for Chlorophyll Content Estimation

Meggio, F.; Zarco-Tejada, Pablo J.; Miller, J. R.; Martín, P.; González, M. R.; Berjón, A.

Special issue: Quantitative retrieval of surface properties from optical remote sensing: advancing applications with physical models – In honour of the retirement of Professor John R. Miller | Methods for chlorophyll a + b (Cab) estimation in row-structured crops that account for row orientation and...

DRIVER (Spanish)

17

Refractive power of a multilayer rotationally symmetric model of the human cornea and tear film

Barbero, Sergio

8 pages, 5 figures.-- OCIS codes: 080.2710, 080.2730, 330.5370.-- PMID: 16783420 [PubMed]. | Optical models of the human cornea and tear film typically employ a single homogeneous cornea with an average refractive index. I propose to use a more realistic multilayer model based on morphological data ...

DRIVER (Spanish)

19

Red, blue, and green laser-light generation from the NYAB nonlinear crystal

Jaque, Daniel; Capmany, Juan; García Solé, José
1999-11-01

Digital.CSIC (Spain)

20

Quantum correlations close to a square pattern forming instability

Hoyuelos, Miguel; Oppo, Gian-Luca; Colet, Pere; San Miguel, Maxi
2003-03-01

Digital.CSIC (Spain)

22

Photothermal analysis of polymeric laser materials excited at different pump rates

Duchowicz, Ricardo; Scaffardi, Lucía B.; Costela González, Ángel; García Moreno, Inmaculada; Sastre Muñoz, Roberto; Acuña Fernandez, Alberto Ulises
2003-01-01

Digital.CSIC (Spain)

23

Periodic entrainment of power dropouts in mutually coupled semiconductor lasers

Buldú, Javier M.; Vicente, Raúl; Pérez, Toni; Mirasso, Claudio R.; Torrent, M. C.; García-Ojalvo, Jordi

DRIVER (Spanish)

24

PROSPECT+SAIL: 15 Years of Use for Land Surface Characterization

Jacquemoud, S.; Verhoef, W.; Baret, F.; Zarco-Tejada, Pablo J.; Asner, G.; Francois, C.; Ustin, S. L.

Presented at Geoscience and Remote Sensing Symposium, 2006. IGARSS 2006. IEEE International Conference on , vol., no., pp.1992-1995, July 31 2006-Aug. 4 2006 | The combined PROSPECT leaf optical properties model and SAIL canopy bidirectional reflectance model, i.e. PROSAIL, has been used for about f...

DRIVER (Spanish)

25

PROSPECT+SAIL: 15 Years of Use for Land Surface Characterization

Jacquemoud, S.; Verhoef, W.; Baret, F.; Zarco-Tejada, Pablo J.; Asner, G.; Francois, C.; Ustin, S. L.
2007-06-18

Digital.CSIC (Spain)

28

Optical phonons of strained GaAs/GaP quantum wells studied by Raman spectroscopy

Castrillo, P.; Armelles Reig, Gaspar; Silveira, Juan Pedro; Briones Fernández-Pola, Fernando; Barbolla, J.
1997-09-08

Digital.CSIC (Spain)

29

Optical distortion correction in Optical Coherence Tomography for quantitative ocular anterior segment by three-dimensional imaging

Ortiz, Sergio; Siedlecki, Damian; Grulkowski, Ireneusz; Remón, Laura; Pascual, Daniel; Wojtkowski, Maciej; Marcos, Susana
2010-01-26

Digital.CSIC (Spain)

30

Optical aberrations of intraocular lenses measured in vivo and in vitro

Barbero, Sergio; Marcos, Susana; Jiménez-Alfaro, Ignacio
2003-10-01

Digital.CSIC (Spain)

31

Optical aberrations in the mouse eye

García de la Cera, Elena; Rodríguez, Guadalupe; Llorente, Lourdes; Schaeffel, Frank; Marcos, Susana
2006-03-03

Digital.CSIC (Spain)

32

Optical Indices as Bioindicators of Forest Condition from Hyperspectral CASI data

Zarco-Tejada, Pablo J.; Miller, J. R.; Mohammed, G. H.; Noland, T. L.; Sampson, P. H.
2000-01-01

Digital.CSIC (Spain)

33

On the prediction of optical aberrations by personalized eye models.

Navarro, Rafael; González, Luis M.; Hernández-Matamoros, José Luis
2006-06-01

Digital.CSIC (Spain)

34

Off-axis aberrations of a wide-angle schematic eye model

Escudero-Sanz, Beatriz; Navarro, Rafael
1999-08-01

Digital.CSIC (Spain)

36

Needle Chlorophyll content estimation through model inversion using hyperspectral data from Boreal Conifer Forest Canopies

Zarco-Tejada, Pablo J.; Miller, J. R.; Harron, J.; Hu, B.; Noland, T. L.; Goel, N. S.; Mohammed, G. H.

DRIVER (Spanish)

37

Multizone model for postsurgical corneas: analysis of standard and custom LASIK outcomes

González, Luis M.; Hernández-Matamoros, José Luis; Navarro, Rafael
2008-08-27

Digital.CSIC (Spain)

38

Multiwavelength observations of the energetic GRB 080810: detailed mapping of the broad-band spectral evolution

Page, K. L.; Willingale, R.; Bissaldi, E.; Ugarte Postigo, A. de; Holland, S. T.; McBreen, S.; O’Brien, P. T.; Osborne, J. P.; Prochaska, J. X.; Rol, E.; Rykoff, E. S.; Starling, R. L. C.; Tanvir, N. R.; Van der Horst, A. J.; Wiersema, K.; Zhang, B.; Aceituno, Francisco José; Akerlof, C.; Beardmore, A. P.; Briggs, M. S.; Burrows, D. N.; Castro-Tirado, Alberto J.; Connaughton, V.; Evans, P. A.; Fynbo, J. P. U.; Gehrels, N.; Guidorzi, C.; Howard, A. W.; Kennea, J. A.; Kouveliotou, C.; Pagani, C.; Preece, R.; Perley, D.; Steele, I. A.; Yuan, F.
2009-09-01

Digital.CSIC (Spain)

39

Multiplicative noise in the longitudinal mode dynamics of a bulk semiconductor laser

Pedaci, Francesco; Lepri, Stefano; Balle, Salvador; Giacomelli, Giovanni; Giudici, Massimo; Tredicce, Jorge R.
2006-04-17

Digital.CSIC (Spain)

40

Modeling bidirectionally coupled single-mode semiconductor lasers

Mulet, Josep; Masoller, Cristina; Mirasso, Claudio R.
2002-06-19

Digital.CSIC (Spain)

41
43

Metodología para el modelado del comportamiento mecánico de hueso esponjoso a partir de sus microestructuras/ Mechanical Modelling of Cancellous Bone from their Microstructure

Ramírez-Díaz, E.I.; Ortiz-Prado, A.; Schouwenaars-Franssens, R.; Ruiz-Cervantes, O.
2010-06-01

Resumen en español En este trabajo se establece una metodología para generar modelos bidimensionales de hueso esponjoso, que son analizados mediante paquetería de elemento finito.Los modelos están enfocados a representar la arquitectura trabecular mediante celdasde Voronoi, a partir de las coordenadas de los centros de los poros de la estructura ósea observados en imágenes generadas mediante microscopía óptica. Buscando similitud geométrica, se asignó un mayor espesor en la zona de (mas) unión de las trabéculas, ya que se ha comprobado que esta consideración lleva a resultados más aproximados a los experimentales. Para nutrir el modelo se realizaron pruebas de compresión a probetas de hueso trabecular, tomando los valores de deformación máxima y esfuerzo máximo para determinar la rigidez del tejido. Mediante el análisis de imágenes de probetas deformadas, se estableció que el momento del colapso de la estructura trabecularse da por la sucesión de fallas enlas trabéculas individuales y se determinó un valor crítico de aproximadamente un 36% de las trabéculas. Finalmente, se determinó mediante análisis por elemento finito, que la rigidez del tejido esponjoso es de 323[MPa], y a partir de este valor se evaluó la variación de la resistencia en función de la densidad y la arquitectura trabecular. Resumen en inglés In this paper is established a spongy bone bidimensional models methodology for its analysis by finite element software. The models are focused to represent the bone trabecular structure by Voronoi cells, using the coordinates of the porous center, contained within the bone structure, obtained by optical microscope images. Looking for a better geometrical similarity, it was assigned a thicker transversal area in the trabecula union zone, because has been reported that thi (mas) s factor gives a better approximation to experimental results. To feed the finite element models, compression test has been done to trabecular specimens, taking the maximum strain and maximum stress, to obtain the elastic modulus. By means of strained specimen images analysis, it has been established the structure collapse moment. It was when the 36% of total trabeculae failed. Finally it was obtained a tissue Young modulus of 323 [MPa] and with this value, the resistance variation in function of density and trabecular architecture.

Scientific Electronic Library Online (Spanish)

44

Local transfer of angular momentum to matter

Zambrini, Roberta; Barnett, Stephen M.
2005-06-01

Digital.CSIC (Spain)

45

Leaf Chlorophyll a+b and canopy LAI estimation in crops using R-T models and Hyperspectral Reflectance Imagery

Zarco-Tejada, Pablo J.; Haboudane, D.; Miller, J. R.; Tremblay, N.; Dextraze, L.

DRIVER (Spanish)

46

Investigating sources of variability of monochromatic and transverse chromatic aberrations across eyes

Marcos, Susana; Burns, Stephen A.; Prieto, Pedro M.; Navarro, Rafael; Baraibar, Begoña

11 pages, 8 figures.-- PMID: 11738452 [PubMed]. | Schematic eye models have typically been used to explain the average monochromatic and chromatic imaging properties of the eye. Both monochromatic aberrations and transverse chromatic aberration are known to vary widely across subjects. However, to o...

DRIVER (Spanish)

47

Intensity and polarization self-pulsations in VCSELs

Scirè, Alessandro; Mulet, Josep; Mirasso, Claudio R.; San Miguel, Maxi
2002-03-15

Digital.CSIC (Spain)

49

Imperfect optics may be the eye’s defence against chromatic blur

McLellan, James S.; Marcos, Susana; Prieto, Pedro M.; Burns, Stephen A.
2002-05-09

Digital.CSIC (Spain)

50

Hojalata: Evaluación de su Comportamiento frente a la Corrosión en Medios Acuosos/ Tinplate: Evaluation of its Corrosion Behavior in Aqueous Media

Culcasi, José D; Elsner, Cecilia I; Di Sarli, Alejandro R
2010-01-01

Resumen en español Las primeras etapas del deterioro de chapas comerciales de hojalata expuestas a distintas soluciones salinas fueron estudiadas mediante técnicas electroquímicas y de análisis de superficie complementadas por microscopia óptica y electrónica de barrido. Sus resultados fueron analizados e interpretados utilizando modelos capaces de describir adecuadamente la degradación metálica de interfaces tan complejas como reactivas. Se concluyó que: 1) el deterioro de la super (mas) ficie metálica ocurre mayormente durante las primeras 24 horas de inmersión, alcanzándose luego un comportamiento relativamente estable y reproducible con independencia del medio utilizado; 2) excepto en las soluciones “buffer” basadas en bórax o carbonato donde los escasos productos de corrosión aportaron un efecto protector, en los restantes medios tales productos fueron, en general variantes no protectoras de un oxihidróxido de hierro; y 3) estos resultados coinciden con las velocidades de corrosión determinadas electroquímicamente y, por ende, con el lapso de vida útil del recubrimiento Resumen en inglés The first deterioration steps suffered by commercially available tinplate sheets exposed to different saline solutions were studied using electrochemical and surface analysis techniques, as well as optical and electronic scanning microscopy. Their results were analyzed and interpreted utilizing models able to adequately describe the degradation of those as complex as reactive metallic interfaces. It was concluded that: 1) independently of the medium, the main degradation (mas) of the metallic surface takes place within the first 24h immersion, but then its behavior is relatively stable and reproducible; 2) except in the buffer solutions based on borax or carbonate where the scarce corrosion products provided a protective effect, in the other electrolyte medium such products were, in general, a variety of non-protective iron oxyhydroxides; and 3) these results are in agreement with the electrochemically determined corrosion rates and, therefore, with the coating useful life

Scientific Electronic Library Online (Spanish)

51

Experiments on PMMA models to predict the impact of corneal refractive surgery on corneal shape

Dorronsoro, Carlos; Cano, Daniel; Merayo-Lloves, Jesús; Marcos, Susana

15 pages, 9 figures.-- OCIS codes: 120.6650, 140.3390, 170.1020, 170.3890, 330.4460, 330.5370. | Flat and spherical PMMA surfaces were ablated with a standard refractive surgery laser system. The ratio of profiles on flat to spherical PMMA surfaces was used to estimate experimentally the radial chan...

DRIVER (Spanish)

52

Experiments on PMMA models to predict the impact of corneal refractive surgery on corneal shape

Dorronsoro, Carlos; Cano, Daniel; Merayo-Lloves, Jesús; Marcos, Susana
2006-06-26

Digital.CSIC (Spain)

53

Experiments on PMMA model to predict the impact of corneal refractive surgery on corneal shape: Reply

Dorronsoro, Carlos; Marcos, Susana

2 pages.-- OCIS codes: 120.6650, 140.3390, 170.1020, 170.3890, 330.4460, 330.5370. | A reply to the comment by Jiménez et al. on the paper "Experiments on PMMA model to predict the impact of corneal refractive surgery on corneal shape" by Dorronsoro et al., Opt. Express, 14, 6142-6156 (2006). | Peer...

DRIVER (Spanish)

55

Experimental evidence of van der Pol-Fitzhugh-Nagumo dynamics in semiconductor optical amplifiers

Barland, Stéphane; Piro, Oreste; Giudici, Massimo; Tredicce, Jorge R.; Balle, Salvador
2003-09-19

Digital.CSIC (Spain)

56

Effect of external noise correlation in optical coherence resonance

Buldú, Javier M.; García-Ojalvo, Jordi; Mirasso, Claudio R.; Torrent, M. C.; Sancho, J. M.
2001-10-19

Digital.CSIC (Spain)

57

Dynamical instabilities of dissipative solitons in nonlinear optical cavities with nonlocal materials

Gelens, Lendert; Gomila, Damià; Van der Sande, Guy; Danckaert, Jan; Colet, Pere; Matías, Manuel A.
2008-03-21

Digital.CSIC (Spain)

58

Discrete solitons and vortices in the two-dimensional Salerno model with competing nonlinearities

Gómez-Gardeñes, Jesús; Malomed, B. A.; Floría, Luis Mario; Bishop, A. R.
2006-09-01

Digital.CSIC (Spain)

59

Diffractive magneto-optics, magnetic interactions, and reversal mechanisms in Co microsquare arrays

Costa Krämer, José Luis; Álvarez-Sánchez, R.; Bengoechea, A.; Torres, F.; García-Mochales, Pedro; Briones Fernández-Pola, Fernando
2005-03-28

Digital.CSIC (Spain)

60

Design and analysis of silicon antiresonant reflecting optical waveguides for evanescent field sensor

Prieto, Francisco; Llobera, Andreu; Jiménez, David; Domínguez, Carlos; Calle Martín, Ana; Lechuga, Laura M.
2000-07-01

Digital.CSIC (Spain)

63

Coupled optical excitable cells

Yacomotti, Alejandro M.; Mindlin, Gabriel B.; Giudici, Massimo; Balle, Salvador; Barland, Stéphane; Tredicce, Jorge R.
2002-09-27

Digital.CSIC (Spain)

64

Convection induced nonlinear-symmetry-breaking in wave mixing

Zambrini, Roberta; San Miguel, Maxi; Durniak, Céline; Taki, Majid
2005-06-28

Digital.CSIC (Spain)

66

Comparison of real and computer-simulated outcomes of LASIK refractive surgery

Cano, Daniel; Barbero, Sergio; Marcos, Susana

11 pages, 10 figures.-- OCIS codes: 330.4300, 330.5370, 170.4470, 010.7350.-- PMID: 15191172 [PubMed]. | Computer simulations of alternative LASIK ablation patterns were performed for corneal elevation maps of 13 real myopic corneas (range of myopia, -2.0 to -11.5 D). The computationally simulated a...

DRIVER (Spanish)

70

Bayesian model of Snellen visual acuity

Nestares García, Óscar; Navarro, Rafael; Antona, Beatriz
2003-07-01

Digital.CSIC (Spain)

71

Asymmetric and delayed activation of side-modes in multimode semiconductor lasers with optical feedback

Buldú, Javier M.; Rogister, Fabien; Trull, J.; Serrat, Carles; Torrent, M. C.; García-Ojalvo, Jordi; Mirasso, Claudio R.
2002-12-01

Digital.CSIC (Spain)

73

Anticipating the response of excitable systems driven by random forcing,

Ciszak, Marzena; Calvo, Óscar; Masoller, Cristina; Mirasso, Claudio R.; Toral, Raúl
2003-05-22

Digital.CSIC (Spain)

77

Alternate oscillations in semiconductor ring lasers

Sorel, Marc; Scirè, Alessandro; Giuliani, Guido; Miglierina, Riccardo; Balle, Salvador; Laybourn, P. J. R.; Donati, Silvano
2002-11-15

Digital.CSIC (Spain)

80

Accommodation-dependent model of the human eye with aspherics

Navarro, Rafael; Santamaría, Javier; Bescós, J.
1985-08-01

Digital.CSIC (Spain)

81

Absorción óptica y dependencia de la brecha de energía con la temperatura en monocristales del sistema Cd1-xMn xIn2S4

Betancourt, L; Sagredo, V; Rincón, C; Delgado, G.E
2006-05-01

Resumen en español Las propiedades ópticas de monocristales del sistema espinela Cd1-xMn xIn2S4 (x=1.0; 0.8), han sido estudiadas por la técnica de absorción óptica. Del análisis de los datos experimentales, se encontró que la brecha de energía en el MnIn2S4 (x = 1.0) varía desde 2.012 a 1.898 eV entre 9 y 300 K. La dependencia de Eg con la temperatura fue analizada considerando dos modelos teóricos reportados en la literatura. El mejor ajuste fue obtenido usando la expresión de P (mas) ässler. La temperatura de Debye del MnIn2S4 fue estimada alrededor de 153 K, que corresponde a una energía efectiva de los fonones e f f = K Bθ 10 meV para dicho compuesto. Resumen en inglés The optical properties of spinel single crystals of Cd1-xMn xIn2S4 (x=1.0; 0.8) have been studied by optical absorption technique. From the analysis of the experimental data, it was found that the band gap energy Eg of MnIn2S4 (x = 1.0), varies from 2.012 to 1.898 eV between 9 and 300 K. The temperature dependence of Eg, was analyzed by considering two theoretical models reported in the literature. The best fit was obtained by using an expression proposed by Passler. The (mas) Debye temperature of MnIn2S4 was estimated to be around 153 K, that correspond to an effective phonon energy e f f = K Bθ 10 meV for this compound.

Scientific Electronic Library Online (Spanish)