QUASIPERMANENT HOLE-PHOTOREFRACTIVE AND PHOTOCHROMIC EFFECTS IN BI12TIO20 CRYSTALS

被引：15
|
作者：
FREJLICH, J
GARCIA, PM
机构：
[1] Laboratorio de Optica, Instituto de Fisica, Universidade Estadual de Campinas, Campinas-SP
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1992年 / 55卷 / 01期
关键词：
D O I：
10.1007/BF00324601
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report the presence of quasipermanent effects of photochromic and hole-photorefractive nature in Bi12TiO20 (BTO) at low, irradiance at 514.5 nm. A new selective two-wave mixing (S2WM) detection technique was used that allows to separately detect phase and amplitude gratings. S2WM is used in this work for operating a self-stabilized recording setup which allows to produce unusually large quasipermanent effects. We also show that stabilized recording is necessary to obtain reliable information from hologram erasure experiments. Results reported in this paper show the complex nature of recording in BTO and the capabilities of stabilized recording and S2WM for fundamental and applied research on photorefractive crystals.
引用
收藏
页码：49 / 54
页数：6
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