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1 to 50 of 62 results
  • Beam shaping in two-dimensional metallic photonic crystals photonic crystals

     Pradeep Kumar, Nikhil; Maigyte, Lina; Botey Cumella, Muriel; Herrero Simon, Ramon; Staliunas, Kestutis
    Journal of the Optical Society of America B. Optical physics
    Date of publication: 2014-03-05
    Journal article

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    We study light beam propagation in periodic metallic nanostructures¿metallic photonic crystals (MPhCs). In particular, we consider a two-dimensional rhombic array of metallic cylinders embedded in air and explore its ability to tailor spatial propagation of light beams. We show that the structure supports self-collimated propagation and negative (anomalous) diffraction. In this later case, flat lensing is observed, leading to the focusing of beams behind the MPhCs. Moreover, the anisotropic attenuation of light provided by the structure enables spatial filtering of noisy beams.

  • Unlocked evanescent waves in periodic structures

     Botey Cumella, Muriel; Cheng, Yu Chieh; Romero García, Vicenç; Pico Vila, Rubén; Herrero Simon, Ramon; Sánchez Morcillo, Victor José; Staliunas, Kestutis
    Optics letters
    Date of publication: 2013-06-01
    Journal article

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    We predict the existence of evanescent modes with unlocked phases in two-dimensional (2D) dielectric periodic structures. Contrary to what is known for one-dimensional structures, where evanescent fields lock to the host modulation, we show that in 2D systems a new class of evanescent modes exists with an unlocked real part of the wave vector. Hence, beams constructed from such unlocked evanescent waves can exhibit spatial effects. A significant focalization of a beam propagating within the band gap of a flat photonic crystal slab is also shown. The predicted phenomenon is expected to be generic for spatially modulated materials.

  • Negative diffraction by a periodically modulated loss

     Botey Cumella, Muriel; Pradeep Kumar, Nikhil; Herrero Simon, Ramon; Maigyte, Lina; Pico Vila, Rubén; Staliunas, Kestutis
    International Conference on Transparent Optical Networks
    Presentation's date: 2013-06-26
    Presentation of work at congresses

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    We show how a periodic modulation of loss on the wavelength scale provides negative diffraction propagation. In particular, we consider a 2D square arrangement of lossy cylinders embedded in air, with no index contrast. The phase-shifts accumulated in propagation trough such a structure, with flat-flat interfaces, are then compensated by normal diffraction in air leading to a substantial focalization of a light beam behind the crystal. The transmitted light intensity map exhibits a window of high transmission as a result of anisotropic loss provided by the periodicity. The effect is accounted buy the dispersion curves obtained by a coupled mode expansion of Maxwell equations and numerical experiments. The predicted phenomenon is expected to be generic for spatially modulated materials, and indeed we show that the results can be extended to acoustics.

  • Control and enhancement of beam quality of broadarea semiconductor devices and arrays by multimode interference couplers and two-dimensional gain modulation

     Murad, M.; Sorel, M.; Herrero Simon, Ramon; Botey Cumella, Muriel; Marsh, J.H.; Staliunas, Kestutis
    High Power Diode Lasers and Systems Conference
    Presentation's date: 2013-10-16
    Presentation of work at congresses

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    It is proposed to control the beam quality of broad-area semiconductor devices by two-dimensional structuring enforcing phase coherence across the device. First results based on MMI couplers are presented.

  • Intrinsic beam shaping mechanism in spatially modulated broad area semiconductor amplifiers

     Radziunas, Mindaugas; Botey Cumella, Muriel; Herrero Simon, Ramon; Staliunas, Kestutis
    Applied physics letters
    Date of publication: 2013-09-23
    Journal article

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    We investigate beam shaping in broad area semiconductor amplifiers induced by a 2-dimensional (longitudinal and lateral) periodic modulation of the pump on a scale of several microns. The study is performed by solving numerically a (2¿+¿1)-dimensional model for the semiconductor amplifier. We show that, under realistic conditions, the anisotropic gain induced by the pump periodicity can show narrow angular profile of enhanced gain of less than 1°, providing an intrinsic filtering mechanism and eventually improving the spatial beam quality.

  • Flat lensing by periodic loss-modulated materials

     Pradeep Kumar, Nikhil; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis
    Journal of the Optical Society of America B. Optical physics
    Date of publication: 2013-09-23
    Journal article

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    We propose a flat lensing effect using a periodic loss-modulated material. In particular, we consider a two-dimensional square and rhombic arrangement of lossy cylinders embedded in a host media with the same refractive index. The effect is predicted by the dispersion curves obtained by a coupled mode expansion of Maxwell equations and by numerical beam propagation experiments. From both analytical and numerical studies, we show that, for a range of frequencies, light beams undergo negative diffraction on propagation through the loss-modulated medium, providing a window of high transmission. The phase shifts accumulated by negative diffraction within the structure are then compensated by normal diffraction, leading to substantial focalization beyond it.

  • Focalization of evanescent beams

     Botey Cumella, Muriel; Cheng, Yu Chieh; Herrero Simon, Ramon; Romero García, Vicenç; Pico Vila, Rubén; Sánchez Morcillo, Victor José; Staliunas, Kestutis
    International Conference on Transparent Optical Networks
    Presentation's date: 2012
    Presentation of work at congresses

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    We predict and show the existence of unlocked evanescent waves in two dimensional periodic structures. In a one dimensional periodic structure an evanescent mode are located either at the center or at the boundary of the Brillouin Zone, and the real part of wave-vectors is locked either to zero or to the modulation vector of the periodicity. However, we report an unexpected observation that this is not the case in 2D or 3D PhCs where "unlocked" complex modes can be predicted. As an interesting consequence, due to their “complex” character, or, equivalently, due to their phase freedom, beams constructed from such evanescent waves can show focalization effects. Indeed, we numerically simulate the propagation of such beams in the bandgap of PhC slabs, and we find significant focalization.

  • Spatial noise reduction in broad area semiconductors

     Herrero Simon, Ramon; Botey Cumella, Muriel; Pradeep Kumar, Nikhil; Staliunas, Kestutis
    International Conference on Transparent Optical Networks
    Presentation's date: 2012
    Presentation of work at congresses

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  • Self-collimation and spatial filtering in 2D gain/loss periodic spatially modulated materials

     Botey Cumella, Muriel; Staliunas, Kestutis; Herrero Simon, Ramon; Vilaseca Alavedra, Ramon; Pradeep Kumar, Nikhil
    European Conference on Lasers and Electro-Optics - International Quantum Electronics Conference
    Presentation's date: 2012-05-24
    Presentation of work at congresses

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  • Beam shaping in spatially modulated broad-area semiconductor amplifiers

     Herrero Simon, Ramon; Botey Cumella, Muriel; Radziunas, Mindaugas; Staliunas, Kestutis
    Optics letters
    Date of publication: 2012-12-15
    Journal article

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    We propose and analyze a beam-shaping mechanism that in broad-area semiconductor amplifiers occurs due to spatial pump modulation on a micrometer scale. The study, performed under realistic parameters and conditions, predicts a spatial (angular) filtering of the radiation, which leads to a substantial improvement of the spatial quality of the beam during amplification. Quantitative analysis of spatial filtering performance is presented based on numerical integration of the paraxial propagation model and on analytical estimations.

  • Formation of X-pulses in periodically gain/loss modulated materials

     Loiko, Yury; Botey Cumella, Muriel; Herrero Simon, Ramon; Staliunas, Kestutis
    Optics express
    Date of publication: 2012-05-07
    Journal article

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  • Improving beam quality in broad area semiconductor amplifiers

     Herrero Simon, Ramon; Botey Cumella, Muriel; Pradeep Kumar, Nikhil; Staliunas, Kestutis
    Proceedings of SPIE, the International Society for Optical Engineering
    Date of publication: 2012
    Journal article

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  • A new learning experience: Voluntary preparatory course for the bachelor's degree in engineering

     Botey Cumella, Muriel; Alcaraz Sendra, Olga
    Journal of technology and science education
    Date of publication: 2012-02-01
    Journal article

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  • High-directional wave propagation in periodic loss modulated materials

     Pradeep Kumar, Nikhil; Botey Cumella, Muriel; Herrero Simon, Ramon; Loiko, Yury; Staliunas, Kestutis
    Photonics and nanostructures. Fundamentals and applications
    Date of publication: 2012-10
    Journal article

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  • Una nueva experiencia docente: cursos voluntarios de preparación a los estudios de grado en Ingeniería

     Alcaraz Sendra, Olga; Botey Cumella, Muriel
    Congreso Universitario de Innovación Educativa en las Enseñanzas Técnicas
    Presentation's date: 2011-07-06
    Presentation of work at congresses

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  • Anomalous light propagation, finite size-effects and losses in real 3D photonic nanostructures

     Botey Cumella, Muriel; Lozano, Gabriel; Míguez, Hernán; Dorado, Luís A.; Depine, Ricardo A.; Martorell Pena, Jordi
    International Conference on Transparent Optical Networks
    Presentation's date: 2011-06-29
    Presentation of work at congresses

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  • Dispersion management in spatially modulated broad band semiconductors

     Herrero Simon, Ramon; Botey Cumella, Muriel; Khumar, N.P.; Staliunas, Kestutis
    International Conference on Transparent Optical Networks
    Presentation's date: 2011
    Presentation of work at congresses

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    Anomalous group velocity at the high energy range of real 3D photonic nanostructures  Open access

     Botey Cumella, Muriel; Martorell Pena, Jordi
    SPIE Photonics Europe
    Presentation's date: 2010-04-14
    Presentation of work at congresses

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    We perform a theoretical study on the group velocity for finite thin artificial opal slabs made of a reduced number of layers in the spectral range where the light wavelength is on the order of the lattice parameter. The vector KKR method including extinction allows us to evaluate the finite-size effects on light propagation in the GL and GX directions of fcc close-packed opal films made of dielectric spheres. The group is index determined from the phase delay introduced by the structure to the forwardly transmitted electric field. We show that for certain frequencies, light propagation can either be superluminal —positive or negative— or approach zero depending on the crystal size and absorption. Such anomalous behavior can be attributed to the finite character of the structure and provides confirmation of recently emerged experimental results.

  • Diffractive effects in 1D and 2D gain/loss periodic spatial modulated materials

     Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis
    International Conference on Transparent Optical Networks
    Presentation's date: 2010-06-28
    Presentation of work at congresses

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    The propagation of light through materials with periodically modulated gain can present different effects that are analyzed in the paper. The characterization of these gain/loss metamaterials (GLM) with a two-dimensional modulation predicts the mode locked states and effects like non diffractive propagation of beams, superlaminar light propagation regimes and superdiffusion due to angular gain dependence. The last allows the management of amplification and spatial frequency filtering altogether, obtaining amplified, cleaned and focalized beams at the output of these kind of gain modulated materials. The characterization is obtained from the full Maxwell equations using the plane wave expansion (PWE) method, propagation through a given direction is simulated considering beam propagation in the paraxial approximation.

  • Light in materials with periodic gain-loss modulation on a wavelength scale

     Botey Cumella, Muriel; Herrero Simon, Ramon; Staliunas, Kestutis
    Physical review A
    Date of publication: 2010-07-22
    Journal article

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  • Anomalous group velocity at the high energy range of a 3D photonic nanostructure

     Botey Cumella, Muriel; Martorell Pena, Jordi; Dorado, Luís A.; Depine, Ricardo A.; Lozano, Gabriel; Míguez, Hernán
    Optics express
    Date of publication: 2010-07-19
    Journal article

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  • Propagació i generació de llum en nanoestructures fotòniques  Open access

     Botey Cumella, Muriel
    Defense's date: 2009-07-24
    Department of Physics and Nuclear Engineering, Universitat Politècnica de Catalunya
    Theses

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    Els materials nanoestructats periòdics han ofert, en les dues darreres dècades, un nou marc per a l'estudi de la interacció entre la radiació electromagnètica i la matèria. Aquestes estructures permeten modelar les propietats electromagnètiques dels materials i han esdevingut una eina idònia per confinar, guiar, suprimir, localitzar, dividir, dispersar, i filtrar la llum. L'abast del control de radiació electromagnètica va des de la propagació fins a la generació de la llum. Els cristalls fotònics han demostrat ser eficients per suprimir o afavorir mecanismes de generació de llum com l'emissió espontània o els processos no lineals.L'eix central d'aquesta tesi se centra en investigar els efectes fintis i fins a quin punt les propietats d'estructures ideals infinites o infinitament periòdiques es mantenen per a estructures que tenen un caràcter finit. Fins fa poc, els desenvolupaments tant experimentals com teòrics en el camp de cristalls fotònics es basaven, principalment, en càlculs que consideraven estructures ideals amb condicions de contorn perfectament periòdiques. Des dels inicis del camp, però, es van observar desajustos a les prediccions fetes amb aquestes condicions. Tanmateix, alguns d'ells resten, en gran part, inexplicats. En aquest el treball, tractem alguns d'aquests aspectes relacionats amb la propagació i generació del llum en cristalls fotònics finits reals, és a dir, com els que es fabriquen. Amb aquest propòsit, en realitzem un estudi tant teòric com experimental. Estudiem els efectes fintis tant en la regió de la primera banda de reflexió de Bragg com en el rang d'energies altes, on la longitud d'ona de la llum és de l'ordre o més petita que el paràmetre de xarxa.En concret, part del treball es dedica a l'estudi dels cristalls col·loïdals en el rang d'energies baixes. Desenvolupem un model vectorial 3D en l'aproximació de Rayleigh-Gans per simular estructures amb contrasts d'índexs baixos. Aquest model contempla aspectes rellevants dels cristalls reals com són ara les condicions de contorn, inclou una lleugera dispersió en el diàmetre de les esferes com també una absorció eficaç que descriu la difusió de Rayleigh i la dispersió inelàstica causada per la presència d'imperfeccions. Aquest model s'utilitza per estudiar la propagació dins de nanoestructures fotòniques reals, i per determinar-ne les propietats dispersives. Les prediccions del model es contrasten amb mesures experimentals dependents de la polarització de l'estructura de bandes parcial d'un cristall col·loïdal real. També determinem el temps de confinament del fotons, a l'extrem de la primera banda fotònica prohibida, per mitjà de la deformació d'un pols provocada per canvis en la velocitat de grup que acompanya l'atrapament dels fotons.Per explicar la propagació de llum en el rang d'energies altes, utilitzem el model vectorial KKR que ens permet determinar la velocitat de grup d'òpals artificials prims. Trobem que, per determinades freqüències, la velocitat de grup pot ser superlumínica, positiva, negativa o tendir a zero depenent del guix del cristall i la seva absorció. Aquest comportament es pot atribuir al carácter finit de l'estructura i explica observacions experimentals presents a la literatura. La mateixa propagació amb velocitats de grup anòmales pot explicar l'observació experimental de l'augment de la generació de segon harmònic en un òpal prim no lineal. Confirmant així que la disminució de velocitat de grup proporciona un mecanisme que afavoreix els processos no lineals.En darrer lloc, considerem una altra configuració en què la interacció no lineal quadràtica té lloc en una capa de menys d'una longitud d'ona de gruix. Demostrem que, en presència d'una superfície reflectora, la contribució de termes que no conserven el moment lineal de la llum, i que no tindrien cap contribució en un medi infinitament llarg, són els més determinants.

    Photonic periodic nanostructures have offered, in the last two decades, a new framework for the study of the interaction between electromagnetic radiation and matter. Such structures can engineer the electromagnetic properties of materials and have become a powerful tool used to confine, route, suppress, localize, split, disperse, and filter light. The scope of the electromagnetic radiation control can be extended to light propagation and generation. Photonic crystals have successfully been used as host materials to suppress or enhance light generation mechanisms such as spontaneous emission or nonlinear processes.The aim of this thesis is to investigate finite-size effects and to what extent the properties of ideal infinite or infinitely periodic structures hold for structures that are finite in size. Until recently, experimental as well as theoretical developments in the field of photonic crystals have been based, mostly, on calculations that consider ideal structures with perfectly periodic boundary conditions.Deviations from the behavior predicted form such assumptions were already observed when the field was born. However, some of them remained, for the most part, unexplained. In the present work, we tackle some of these aspects related to light propagation and generation in the real finite photonic crystals that can be fabricated. With this purpose, we perform such study from, both, an experimental as well as a theoretical perspective. We study finite-size effects in the region of the first order Bragg reflection band as well as in the high energy range where the wavelength of light is on the order or smaller than the lattice parameter.To be more specific, part of the work is devoted to the study of colloidal crystals at the range of low energy. We develop 3D full wave vector calculation in the Rayleigh-Gans approximation to simulate low index contrast structures. This model accounts for relevant real crystal's aspects such as boundary conditions, a slight dispersion in the spheres diameter and includes an effective absorption accounting for Rayleigh scattering and inelastic diffusion due to imperfections. This model is used to study light propagation within real photonic nanostructures, and to determine their dispersive properties. The predictions of the model are contrasted with experimental polarization dependent measurements of the partial band structure of an actual colloidal crystal. We also determine the experimental photon's lifetime, at the edge of the first order pseudogap, by means of the pulse reshaping induced by changes in the group velocity accompanied by the photon trapping.To explain light propagation in the high energy range, we use a vector KKR calculation that we apply to understand the group velocity of light propagating in artificial opals slabs. We show that for certain frequencies, the group velocity can either be superluminal, positive or negative or approach zero depending on the crystal size and absorption. Such behavior can be attributed to the finite character of the structure and accounts for previously reported experimental observations. The same propagation at anomalous group velocity may explain the experimental observation of second harmonic generation enhancement of light from a nonlinear opal film. Indeed, the group velocity slowing-down provides an enhancement mechanism for nonlinear processes.We finally consider another configuration such that the quadratic nonlinear interaction occurs within a sub-wavelength layer. In the presence of a nearby reflecting surface we demonstrate that the contribution of terms that do not conserve light momentum, and that would vanish in an infinitely long medium, is the most relevant one.

  • Access to the full text
    Nonlinear Light Generation at the High Energy Range of a 3D Opal Film  Open access

     Botey Cumella, Muriel; Maymó Camós, Marc; Molinos Gómez, Albert; Dorado, Luís A.; Depine, Ricardo A.; Lozano, Gabriel; Mihi, Agustín; Míguez, Hernán; Martorell Pena, Jordi
    European Conference on Lasers and Electro-Optics - International Quantum Electronics Conference
    Presentation's date: 2009-06-16
    Presentation of work at congresses

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  • Anomalous Group Velocity in a 3D Photonic Nanostructure

     Botey Cumella, Muriel; Dorado, Luís A.; Depine, Ricardo A.; Lozano, Gabriel; Míguez, Hernán; Martorell Pena, Jordi
    European Conference on Lasers and Electro-Optics - International Quantum Electronics Conference
    Presentation's date: 2009-06-17
    Presentation of work at congresses

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  • Light generation at the anomalous dispersion high energy range of a nonlinear opal film

     Botey Cumella, Muriel; Maymo, M; Molinos Gómez, Albert; Dorado, L; Depine, RA; Lozano, G; Mihi, A; Miguez, H; Martorell Pena, Jordi
    Optics express
    Date of publication: 2009-07
    Journal article

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  • Nonlinear Optics in the Nano and Micro Dimensions

     Di Finizio, Sergio; Vidal Asensio, Xavier; Domínguez Juárez, Jorge Luis; Botey Cumella, Muriel; Macovez, Roberto; Martorell Pena, Jordi
    Annual International Laser Physics Workshop
    Presentation's date: 2008-07-04
    Presentation of work at congresses

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  • Enhanced Light Generation in Opal Films at the High Energy Range

     Botey Cumella, Muriel
    Conferencia Española de Nanofotónica
    Presentation's date: 2008-04-02
    Presentation of work at congresses

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  • Transparent Optical Networks, 2007. ICTON '07. 9th International Conference on Volume 2

     Martorell Pena, Jordi; Vidal Asensio, Xavier; Maymó Camós, Marc; Finizio, Sergio Di; Domínguez Juárez, Jorge Luis; Botey Cumella, Muriel; Kozyreff, G; Kappe, P
    9th International Conference on Transparent Optical Networks
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  • Nonlinear NanoOptics

     Botey Cumella, Muriel
    9th International Conference on Transparent Optical Networks
    Presentation's date: 2007-07-01
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  • Nonlinear Generation of Light in Random Structures

     Martorell Pena, Jordi; Vidal Asensio, Xavier; Maymó Camós, Marc; Botey Cumella, Muriel; Molinos Gómez, Albert; Finizio, Sergio Di; Domínguez Juárez, Jorge Luis
    8th International Conference on Transparent Optical Networks/5th European Symposium on Photonic Crystals ESPC 2006
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  • Band structure determination for finite-size 3-D photonic crystals

     Botey Cumella, Muriel
    International Symposium on Photonic & Electromagnetic Crystal Structures
    Presentation's date: 2005-06-19
    Presentation of work at congresses

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  • Second order nonlinear processes in photonic crystals

     Botey Cumella, Muriel
    7th International Conference on Transparent Optical Networks
    Presentation's date: 2005-07-03
    Presentation of work at congresses

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  • Second order nonlinear processes in photonic crystals

     Maymó Camós, Marc; Molinos Gómez, Albert; Vidal Asensio, Xavier; Botey Cumella, Muriel; Finizio, Sergui Di; Domínguez Juárez, Jorge Luis; Francisco, López- Calahorra; Martorell Pena, Jordi
    7th International Conference on Transparent Optical Networks
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  • Band-structure determination for finite 3-D photonic crystals

     Botey Cumella, Muriel; Maymó Camós, Marc; Martorell Pena, Jordi
    Applied physics B. Lasers and optics
    Date of publication: 2005-07
    Journal article

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  • Efficient counter-propagating nonlinear interaction

     Martorell Pena, Jordi; Maymó Camós, Marc; Finizio, Sergio Di; Vidal Asensio, Xavier; Botey Cumella, Muriel
    13th International Laser Physics Workshop
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  • Finite-size 3-D photonic crystals and their band structure determination

     Botey Cumella, Muriel; Maymó Camós, Marc; Martorell Pena, Jordi
    XX Trobades Científiques de la Mediterrània. Fotònica: ciència i tecnologia de la llum.
    Presentation of work at congresses

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  • Efficient counter-propagating nonlinear interaction.

     Botey Cumella, Muriel
    13th International Laser Physics Workshop
    Presentation's date: 2004-07-12
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  • Counter-propagating nonlinear interaction in photonic structures

     Martorell Pena, Jordi; Maymó Camós, Marc; Finizio, Sergio Di; Vidal Asensio, Xavier; Botey Cumella, Muriel
    International Workshop: Photonic and Electronic Materials.
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  • Finite-size 3-D photonic crystals and their band structure determination.

     Botey Cumella, Muriel
    XX Trobades Científiques de la Mediterrània. Fotònica: ciència i tecnologia de la llum.
    Presentation's date: 2004-09-26
    Presentation of work at congresses

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  • Counter-propagating nonlinear interaction in photonic structures.

     Botey Cumella, Muriel
    International Workshop: Photonic and Electronic Materials.
    Presentation's date: 2004-06-14
    Presentation of work at congresses

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  • Photon Lifetime at the Inner Band Edges of a 3-D Photonic Crystal

     Botey Cumella, Muriel; Maymó Camós, Marc; Martorell Pena, Jordi
    Laser physics
    Date of publication: 2004-02
    Journal article

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  • Photon lifetime in 3-dimensional photonic crystals with a pseudogap

     Botey Cumella, Muriel
    Conference on Lasers and Electro-Optics/Europe 2003 (EQEC 2003)
    Presentation's date: 2003-06-25
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  • Photon lifetime in 3-dimensional photonic crystals with a pseudogap

     Botey Cumella, Muriel; Martorell Pena, Jordi; Biallo, D
    Conference on Lasers and Electro-Optics/Europe 2003 (EQEC 2003)
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  • Temporal response of light propagation in 3-dimensinal photonic crystals

     Botey Cumella, Muriel; Maymó Camós, Marc; Vilaseca Alavedra, Ramon; Martorell Pena, Jordi
    Conference on Lasers and Electro-Optics /Europe - European Quantum Electrocnic Conference. Focus Meeting 2001
    Presentation of work at congresses

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  • Quadratic Nonlinear Effects in Microstructures

     Botey Cumella, Muriel
    Conference on Lasers and Electro-Optics /Europe - European Quantum Electrocnic Conference. Focus Meeting 2001
    Presentation's date: 2001-06-19
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  • Second harmonic generation in photonic crystals and nonlinear reflection in microcavities

     Martorell Pena, Jordi; Vilaseca Alavedra, Ramon; Trull, Jose; Cojocaru, Crina Maria; Botey Cumella, Muriel
    Date of publication: 2001-04
    Book chapter

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  • Quadratic Nonlinear Effects in Microestructures

     Martorell Pena, Jordi; Cojocaru, Crina Maria; Botey Cumella, Muriel; Josep, Trull; Trull, Jose; Vilaseca Alavedra, Ramon; Francesc, Diaz
    Conference on Lasers and Electro-Optics /Europe - European Quantum Electrocnic Conference. Focus Meeting 2001
    Presentation of work at congresses

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  • Nonlinearities in Microstructures

     Martorell Pena, Jordi; Cojocaru, Crina Maria; Botey Cumella, Muriel; Maymó, Marc; Vilaseca Alavedra, Ramon; Trull, Jose
    10th Annual international Laser Physics Workshop
    Presentation of work at congresses

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  • Light propagation in 3-dimensional photonic crystals

     Botey Cumella, Muriel
    Conference on Lasers and Electro-Optics /Europe - European Quantum Electrocnic Conference. Focus Meeting 2001
    Presentation's date: 2001-06-19
    Presentation of work at congresses

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  • Nonlinearities in Microstructures

     Botey Cumella, Muriel
    10th Annual international Laser Physics Workshop
    Presentation's date: 2001-07-03
    Presentation of work at congresses

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