Optically induced space-charge fields, dc voltage, and extraordinarily large nonlinearity in dye-doped nematic liquid crystals

被引：214

作者：

Khoo, IC ^{[1
]}

Slussarenko, S

Guenther, BD

Shih, MY

Chen, P

Wood, WV

机构：

[1] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA

[2] Ukrainian Acad Sci, Inst Phys, UA-252650 Kiev 22, Ukraine

来源：

OPTICS LETTERS | 1998年 / 23卷 / 04期

关键词：

D O I：

10.1364/OL.23.000253

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have observed extraordinarily large optical nonlinearity in Methyl Red-doped nematic liquid-crystal film. Grating diffraction can be generated with an optical intensity as low as 40 mu W/cm(2), and a refractive-index change coefficient of more than 6 cm(2)/W is obtained. The effect is attributed to formation of an optically induced de space-charge field and to the resulting reorientation of the highly birefringent nematic director axis. (C) 1998 Optical Society of America.

引用

页码：253 / 255

页数：3

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