REAL-TIME HOLOGRAPHY IN AZO-DYE-DOPED LIQUID-CRYSTALS

被引：136

作者：

CHEN, AG

BRADY, DJ

机构：

[1] Department of Electrical and Computer Engineering, Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL

来源：

OPTICS LETTERS | 1992年 / 17卷 / 06期

关键词：

D O I：

10.1364/OL.17.000441

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

When exposed to an Ar laser at 514 nm, azo-dye molecules in a nematic liquid-crystal host undergo photoisomerization from trans-isomers to cis-isomers. The conformation change of the azo-dye molecules reorients liquid-crystal molecules. Reversible polarization holograms can be recorded dynamically by this effect, with a threshold intensity as low as 3.0 mW/cm2 and a response time from a few hundred microseconds to 100 ms, depending on the spatial frequency of the recorded grating.

引用

页码：441 / 443

页数：3

共 8 条

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