作者
RM Pierce, RS Cudney, GD Bacher, Jack Feinberg
发表日期
1990/4/15
期刊
Optics letters
卷号
15
期号
8
页码范围
414-416
出版商
Optica Publishing Group
简介
Two optical beams can couple in a photorefractive crystal without using the electro-optic effect. Beam coupling is due to a spatially modulated absorption caused by the rearrangement of trapped charges. We use these gratings to determine the effective photorefractive trap density for several barium titanate crystals.
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RM Pierce, RS Cudney, GD Bacher, J Feinberg - Optics letters, 1990