Signal-beam amplification by two-wave mixing in a liquid-crystal light valve

被引：77

作者：

Brignon, A ^{[1
]}

Bongrand, I ^{[1
]}

Loiseaux, B ^{[1
]}

Huignard, JP ^{[1
]}

机构：

[1] Thomson CSF, Cent Rech Lab, F-91404 Orsay, France

来源：

OPTICS LETTERS | 1997年 / 22卷 / 24期

关键词：

D O I：

10.1364/OL.22.001855

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new two-wave-mixing interaction with gain through a Bi12SiO20 liquid-crystal light valve is presented. We show that the diffraction of a Pump beam in the direction of a weak signal leads to a net amplification of the signal beam, with no need for a phase shift between the interference pattern and the induced index grating. A two-wave-mixing gain of 10 and a 150-ms response time are obtained with a 8.8-mu m-thick liquid-crystal layer, a total intensity of the interacting beams of only 200 mu W/cm(2), and an ac external voltage of +/- 6 V. Image amplification is also demonstrated. (C) 1997 Optical Society of America.

引用

页码：1855 / 1857

页数：3

共 17 条

[1] LIQUID-CRYSTAL LIGHT VALVE USING BULK MONOCRYSTALLINE BI12SIO20 AS THE PHOTOCONDUCTIVE MATERIAL [J].