Polarization controllable spatial filter based on azo-dye-doped liquid-crystal film

被引：9
|
作者：
Lin, TH [1 ]
Fuh, AYG
机构：
[1] Natl Cheng Kung Univ, Inst Electroopt Sci & Engn, Tainan 701, Taiwan
[2] Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan
来源：
OPTICS LETTERS | 2005年 / 30卷 / 11期
关键词：
D O I：
10.1364/OL.30.001390
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This investigation establishes the feasibility of exploiting the surface-assisted photoalignment effect in dye-doped liquid-crystal (DDLC) films as spatial filters with controllable polarization in optical signal processing. The fabrication relies on the fact that the various intensities of the diffracted orders are responsible for various changes of the polarization state induced by the photoaligned DDLC film. Specific spatial orders in Fourier optical signal processing can be filtered by use of an analyzer placed behind the sample to control the polarization state of the diffracted orders. A simulation was performed, and the results agree closely with the experimental data. (c) 2005 Optical Society of America
引用
收藏
页码：1390 / 1392
页数：3
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