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|Type:||Artigo de periódico|
|Title:||ELECTROPHOTOCHROMIC GRATINGS IN PHOTOREFRACTIVE BI12TIO20 CRYSTALS|
|Abstract:||We present the first experimental demonstration of quasi-permanent holographic recordings in Bi12TiO20 crystals through what is to our knowledge a new electrophotochromic effect. This arises from spatial redistribution of some centers that are different from photorefractive centers. Light diffracted from this photochromic grating records a secondary photorefractive hologram. Interaction between both gratings results in asymmetric polarization properties and reversible electric field enhancement of diffracted beams.|
|Editor:||Optical Soc Amer|
|Citation:||Applied Optics. Optical Soc Amer, v. 31, n. 11, n. 1787, n. 1793, 1992.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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