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Type: Artigo de evento
Title: Holographic Recording In Photorefractive Bi2teo5 Crystals At High Intensity
Author: De Oliveira I.
Carvalho J.F.
Fabris Z.V.
Frejlich J.
Abstract: We report the recording of nearly 35% diffraction efficiency holograms of photorefractive nature in Bi2TeO5 crystals, using 633 nm wavelength laser beams. Holographic techniques showed that a slow and a fast holograms arise, the latter based on electrons and the former based on positively charged carriers. We also measured the quantum efficiency for photoelectron generation and the characteristic diffusion (LD) and Debye (ls) lengths of these holograms and verified that LD and ls are modified as the light intensity onto the crystal increases, in agreement with previously reported theoretical prediction and experimental results but on other photorefractive material. © 2013 SPIE.
Rights: aberto
Identifier DOI: 10.1117/12.2025573
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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