Two-dimensional non-spatial filtering based on holographic Bragg gratings

被引:0
|
作者
何焰蓝 [1 ]
郑浩斌 [1 ]
谭吉春 [1 ]
丁道一 [1 ]
郑光威 [1 ]
王晓东 [2 ]
王逍 [2 ]
机构
[1] Science College,National University of Defense Technology
[2] Research Center of Laser Fusion,China Academy of Engineering Physics
基金
中国国家自然科学基金;
关键词
spatial filter; Bragg gratings; two-dimensional filtering; polarisation;
D O I
暂无
中图分类号
O438.1 [全息光学];
学科分类号
070207 ; 0803 ;
摘要
The filter made up of two gratings performs as a two-dimensional non-spatial filtering.This paper reports that the volume Bragg gratings are fabricated by interfering two collimated coherent laser beams in photopolymer.Diffraction efficiency of a single grating is up to 78% in Bragg’s condition,then a two-dimensional non-spatial filter,which consists of two volume Bragg gratings and a half-wave plate,enables the laser beam filtered in two dimensions with the diffraction efficiency of 54%.The Bragg’s condition and effect of polarisation on performances of the two-dimension filter are also discussed.
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页码:331 / 336
页数:6
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