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Type: Artigo de periódico
Title: An improved procedure for fringe-locked photorefractive running hologram data processing
Author: Salazar, A
Lorduy, GH
Montenegro, R
Frejlich, J
Abstract: We report a new improved procedure for experimental data fitting in photorefractive fringe-locked running hologram experiments. From this fitting we compute the diffusion length L(D), the Debye screening length l(s), and the quantum efficiency for photo-excitation of charge carriers Phi, with a lower degree of uncertainty than reported in previous publications. The procedure was successfully tried on an undoped B(12)TiO(20) (BTO) crystal and led to L(D) = 0.16 mu m, l(s) = 0.038 mu m, and Phi = 0.33, in good agreement with the already available information on this sample. The effectively applied electric field coefficient in the experiment was also estimated.
Subject: diffraction efficiency
photorefractive materials
fringe-locked holograms
Country: Inglaterra
Editor: Iop Publishing Ltd
Rights: fechado
Identifier DOI: 10.1088/1464-4258/11/4/045201
Date Issue: 2009
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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