Exploració per tema "Modulació de llum"
Ara es mostren els items 1-9 de 9
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Liquid crystal spatial light modulator with optimized phase modulation ranges to display multiorder diffractive elements
(Multidisciplinary Digital Publishing Institute, 2019-07-01)
Article
Accés obert -
Medida de la concentarción de gases mediante la ténica WMS
(Universitat Politècnica de Catalunya, 2009-01)
Projecte/Treball Final de Carrera
Accés obertEl objetivo de este proyecto es el estudio exhaustivo de la técnica de modulación WMS aplicada al cálculo de concentraciones de gases. Mediante la modulación de la longitud de onda de un haz de luz láser y atravesando con ... -
Non-Hermitian modulations for stabilization of VCSEL, EEL and EEL arrays
(2023)
Text en actes de congrés
Accés restringit per política de l'editorialSemiconductor lasers and laser arrays emit temporally unstable and low spatial quality beams associated to intrinsic dynamical spatiotemporal instabilities. W e propose the simultaneous modulations of refractive index and ... -
Shaping of light beams with photonic crystals : spatial filtering, beam collimation and focusing
(Universitat Politècnica de Catalunya, 2014-07-01)
Tesi
Accés obertThe research developed in the framework of this PhD thesis is a theoretical, numerical and experimental study of light beam shaping (spatial filtering, beam collimation and focusing) in the visible frequency range using ... -
Simulador óptico de lentes intraoculares multifocales difractivas mediante un modulador espacial sólo de fase
(2021-05-13)
Comunicació de congrés
Accés obert -
Spatially variant polarized beams with tailored profiles
(Universitat Politècnica de Catalunya, 2012-09-10)
Projecte Final de Màster Oficial
Accés obert[ANGLÈS] A new approach for the generation of spatially-variant polarized beams has been developed by manipulating vertical and horizontal field component of the optical signal individually in a Mach-Zehnder interferometric ... -
Stabilization of laser emission by non-Hermitian potentials
(Institute of Electrical and Electronics Engineers (IEEE), 2023)
Text en actes de congrés
Accés obertLight emission from single lasers and laser arrays can suffer from dynamical spatiotemporal instabilities leading to emitted beams temporally unstable and with low spatial quality. We propose a feasible stabilization ... -
Stabilization of microlasers by non-Hermitian potentials
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2023)
Text en actes de congrés
Accés obertVertical-cavity semiconductor lasers as well as single units or arrays of Edge Emitting Lasers suffer from dynamical spatiotemporal instabilities leading to temporally unstable and low spatial beam quality. We propose a ... -
Wave-front phase-modulation control and focusing of second-harmonic light generated in transparent nonlinear random structures
(2013)
Article
Accés obertWe theoretically investigate how phase-only spatial light modulation can enable controlling and focusing the second-harmonic light generated in transparent nonlinear random structures. The studied structures are composed ...