Photorefractive effects observed in 4-N, N-dimethylamino-4'-N'-methyl-stilbazolium toluene-p-sulfonate

被引：11

作者：

Follonier, S

Bosshard, C

Pan, F

Gunter, P

机构：

[1] Nonlinear Optics Laboratory, Institute of Quantum Electronics, Swiss Fed. Institute of Technology

来源：

OPTICS LETTERS | 1996年 / 21卷 / 20期

关键词：

D O I：

10.1364/OL.21.001655

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We measured, for the first time to our knowledge, a net two-beam coupling gain in an organic crystal. Our photorefractive measurements were carried out in nominally pure organic crystals of 4-N, N-dimethylamino-4'-N'-methyl-stilbazolium toluene-p-sulfonate (DAST). Because of its large electro-optic coefficient, r(11) = 83 pm/V at lambda = 750 nm, and a photoconductivity of up to sigma = 6.7 x 10(-12) Omega(-1) cm(-1) at intensity I = 570 mW/cm(2), DAST showed a gain of 2.2 cm(-1) for an absorption of alpha = 1.8 cm(-1). With grating buildup times below 1 s at light intensities of 300 mW/cm(2), DAST is a promising candidate for photorefractive applications in the near infrared. (C) 1996 Optical Society of America

引用

页码：1655 / 1657

页数：3

共 14 条

[1]

BOSSHARD C, 1995, ADV NONLINEAR OPTICS, V1, P193

[2] OBSERVATION OF THE PHOTOREFRACTIVE EFFECT IN A POLYMER [J].