Origin of dark holographic scattering patterns in photorefractive crystals

被引：0
|
作者：
S. Schwalenberg
E. Krätzig
机构：
[1] Universiät Osnabrück,Fachbereich Physik
来源：
Applied Physics B | 2004年 / 79卷
关键词：
Scattered Wave; Gain Factor; Pump Wave; Dark Line; Scatter Pattern;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We explain the origin of recently reported dark parametric holographic scattering patterns observed in photorefractive strontium–barium niobate (SBN) and barium–calcium titanate (BCT) crystals. Taking into account the model for parametric four-wave-mixing processes in photorefractive crystals, exponential gain factors are presented for the scattering patterns and compared with the gain for the scattering background. We interpret the dark scattering patterns as a result of counteracting energy-transfer processes.
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页码：423 / 425
页数：2
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