18 November 2013 Holographic recording in photorefractive Bi2TeO5 crystals at high intensity
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Proceedings Volume 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications; 87852N (2013) https://doi.org/10.1117/12.2025573
Event: 8th Ibero American Optics Meeting/11th Latin American Meeting on Optics, Lasers, and Applications, 2013, Porto, Portugal
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.
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Ivan de Oliveira, Ivan de Oliveira, Jesiel F. Carvalho, Jesiel F. Carvalho, Zanine V. Fabris, Zanine V. Fabris, Jaime Frejlich, Jaime Frejlich, } "Holographic recording in photorefractive Bi2TeO5 crystals at high intensity", Proc. SPIE 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 87852N (18 November 2013); doi: 10.1117/12.2025573; https://doi.org/10.1117/12.2025573
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