Orientational photorefractive effects observed in polymer-dispersed liquid crystals

被引：115

作者：

Ono, H ^{[1
]}

Kawatsuki, N ^{[1
]}

机构：

[1] HIMEJI INST TECHNOL, DEPT APPL CHEM, HIMEJI, HYOGO 67122, JAPAN

来源：

OPTICS LETTERS | 1997年 / 22卷 / 15期

关键词：

D O I：

10.1364/OL.22.001144

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a novel type of photorefractive polymer-dispersed liquid crystal (PDLC) that contains a polymer, low-molecular liquid crystals (LC's), and a photoconductive sensitizer. Photorefractivity is demonstrated by two-beam-coupling experiments with an external de field. This material shows highly sensitive photorefractivity, and a purely refractive-index grating (Delta n greater than or equal to 3.0 x 10(-3)) is generated by irradiation of interference light (lambda = 632.8 nm). The grating in the photorefractive PDLC's shows strong anisotropy, and the dynamics depends strongly on the composition. In the case of a 40:60 weight ratio of polymer:LC's, the photorefractive PDLC's present a stable memory effect. (C) 1997 Optical Society of America.

引用

页码：1144 / 1146

页数：3

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