Dynamics of photoinduced second order nonlinearity in dimethylamino-nitrostilbene polymer thin films

被引：15

作者：

Churikov, VM ^{[1
]}

Hsu, CC ^{[1
]}

机构：

[1] Natl Chung Cheng Univ, Dept Phys, Chiayi 621, Taiwan

来源：

OPTICS COMMUNICATIONS | 2001年 / 190卷 / 1-6期

关键词：

all-optical poling; polymer thin film; second harmonic generation; trans-cis photoisomerization;

D O I：

10.1016/S0030-4018(01)01099-9

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

All-optical encoding of macroscopic second order susceptibility in a dimethylamino-nitrostilbene (DANS) polymer thin film is demonstrated. We show that the main mechanism responsible for the induced nonlinearity in DANS polymer is the angular hole burning effect due to trans-cis isomerization as distinct from ate-polymers. in which considerable reorientation of trans-molecules occurs. The DANS sample exhibits better dark stability in comparison with ate-systems such as disperse red 1 polymethylmethacrylate (DRI-PMMA). The results are explained by the absence of thermal cis-trans relaxation in DANS-PMMA. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：367 / 371

页数：5

共 9 条

[1] LIGHT-INDUCED 2ND-HARMONIC GENERATION IN AZO-DYE POLYMERS [J].