Diffraction efficiency in quasi-degenerate coupling in photorefractive materials

The aim of this work is to present theoretical analysis of the diffraction efficiency in sillenite BTO crystal, for mobile transmission gratings, where the effects of coupling beams are significant . In case of the degenerate coupling in photorefractive materials, the efficiency depends of the crys...

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Autores principales:	Villamizar Amado, Astrid Lorena, Lizarazo, Zandra, Arias Hernández, Néstor Alonso, Molina Prado, Martha Lucía, Tebaldi, Myrian Cristina
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2019
Materias:	Física Photorefractive crystal Diffraction efficiency Case non-degenerate Concentration ratio Cristales fotorrefractivos Eficiencia de difracción Caso cuasi-degenerado Razón de concentración
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/124389
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-124389
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Photorefractive crystal Diffraction efficiency Case non-degenerate Concentration ratio Cristales fotorrefractivos Eficiencia de difracción Caso cuasi-degenerado Razón de concentración
spellingShingle	Física Photorefractive crystal Diffraction efficiency Case non-degenerate Concentration ratio Cristales fotorrefractivos Eficiencia de difracción Caso cuasi-degenerado Razón de concentración Villamizar Amado, Astrid Lorena Lizarazo, Zandra Arias Hernández, Néstor Alonso Molina Prado, Martha Lucía Tebaldi, Myrian Cristina Diffraction efficiency in quasi-degenerate coupling in photorefractive materials
topic_facet	Física Photorefractive crystal Diffraction efficiency Case non-degenerate Concentration ratio Cristales fotorrefractivos Eficiencia de difracción Caso cuasi-degenerado Razón de concentración
description	The aim of this work is to present theoretical analysis of the diffraction efficiency in sillenite BTO crystal, for mobile transmission gratings, where the effects of coupling beams are significant . In case of the degenerate coupling in photorefractive materials, the efficiency depends of the crystal thickness, coupling coefficient and the input intensity ratio. In the non-degenerate coupling case, the diffraction efficiency also depends on the response time of the photorefractive medium. This response time is the function of concentration ratio, i.e., of the relation between acceptor numbers and donor numbers. The diffraction efficiency is obtained by using coupled wave equations in onBragg regime using Method Runge-Kutta of order 4 in Matlab. The analysis considers the nonuniformity of the gratings inside the crystal, the concentration ratio of the material and detuning frequency.
format	Articulo Articulo
author	Villamizar Amado, Astrid Lorena Lizarazo, Zandra Arias Hernández, Néstor Alonso Molina Prado, Martha Lucía Tebaldi, Myrian Cristina
author_facet	Villamizar Amado, Astrid Lorena Lizarazo, Zandra Arias Hernández, Néstor Alonso Molina Prado, Martha Lucía Tebaldi, Myrian Cristina
author_sort	Villamizar Amado, Astrid Lorena
title	Diffraction efficiency in quasi-degenerate coupling in photorefractive materials
title_short	Diffraction efficiency in quasi-degenerate coupling in photorefractive materials
title_full	Diffraction efficiency in quasi-degenerate coupling in photorefractive materials
title_fullStr	Diffraction efficiency in quasi-degenerate coupling in photorefractive materials
title_full_unstemmed	Diffraction efficiency in quasi-degenerate coupling in photorefractive materials
title_sort	diffraction efficiency in quasi-degenerate coupling in photorefractive materials
publishDate	2019
url	http://sedici.unlp.edu.ar/handle/10915/124389
work_keys_str_mv	AT villamizaramadoastridlorena diffractionefficiencyinquasidegeneratecouplinginphotorefractivematerials AT lizarazozandra diffractionefficiencyinquasidegeneratecouplinginphotorefractivematerials AT ariashernandeznestoralonso diffractionefficiencyinquasidegeneratecouplinginphotorefractivematerials AT molinapradomarthalucia diffractionefficiencyinquasidegeneratecouplinginphotorefractivematerials AT tebaldimyriancristina diffractionefficiencyinquasidegeneratecouplinginphotorefractivematerials
bdutipo_str	Repositorios
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Diffraction efficiency in quasi-degenerate coupling in photorefractive materials

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