Optimization of compensation for high spatial frequency in distorted wavefront using optical phase conjugation

被引：0
|
作者：
张盼 [1 ,2 ]
刘德安 [1 ]
杨爱华 [1 ,2 ]
朱健强 [1 ]
机构：
[1] Key Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences
[2] Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences
来源：
Chinese Optics Letters | 2019年 / 17卷 / 07期
基金：
中国国家自然科学基金;
关键词：
red; image; Optimization of compensation for high spatial frequency in distorted wavefront using optical phase conjugation;
D O I：
暂无
中图分类号：
O436.2 [吸收与散射];
学科分类号：
070207 ; 0803 ;
摘要：
A method is proposed to optimize the recording structure of the photorefractive volume grating to compensate high spatial frequency in the distorted wavefront by optical phase conjugation. Based on the coupled-wave equation, the diffraction efficiency of the recorded grating formed by the scattered beams in different recording structures is simulated. The theoretical results show that the recorded modulations with high spatial frequency can be significantly improved in the small recording angle. In the experiment, three recording structures with the recording angles of 7.5°, 30°, and 45° are chosen to verify the compensation effect. Compared with the reconstructed image in the large recording angle of 45°, the signal to noise ratio of the image recorded at 7.5° increases to 3.2 times of that at 45°.
引用
收藏
页码：38 / 41
页数：4
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