Off-Bragg analysis of the diffraction efficiency of transmission photorefractive holograms

被引：8
|
作者：
Nonaka, K
机构：
[1] Integrated Information and Energy System Laboratories, Nippon Telephone and Telegraph (NTT), Musashino-shi, Tokyo, 180
来源：
APPLIED OPTICS | 1997年 / 36卷 / 20期
关键词：
holography; diffraction efficiency; photorefractive crystal; special functions;
D O I：
10.1364/AO.36.004792
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Formulas for calculating the diffraction efficiency of gratings recorded in a photorefractive medium are given. The analysis uses coupled-wave theory for photorefractive hologram gratings and takes into account the photorefractive phase shift and fringe-bending effect. General solutions for diffracted (signal) and undiffracted (reference) waves are derived in a closed-form expression. By use of the derived formulas the diffraction efficiency for angle mismatch from the Bragg condition can easily be evaluated as compared with numerical-analysis methods. The diffraction efficiency is also quantified in terms of medium parameters and recording and reconstruction conditions. (C) 1997 Optical Society of America.
引用
收藏
页码：4792 / 4800
页数：9
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