Response time characteristics and holographic gratings in azo-dye doped photofractive polymeric composite

被引：24

作者：

Wang, F ^{[1
]}

Chen, ZJ

Gong, QH

机构：

[1] Peking Univ, Mesoscop Phys Lab, Dept Phys, Beijing 100871, Peoples R China

[2] Peking Univ, Dept Chem, Beijing 100871, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 1998年 / 15卷 / 05期

关键词：

D O I：

10.1088/0256-307X/15/5/015

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Theoretical and experimental investigation on the applied electric field-and intensity-dependent photorefractive response in a photorefractive polymeric composite is presented. The decay time constant and the corresponding grating-amplitude for the composite consisting of 1-n-butoxyl-2,5-dimethyl-4-(4'-nitrophenylazo)benzene:poly(N- vinylcarbazole):2,4,7-trinitro-9-fluorenone with a weight ratio 44:55:1 were measured. The results revealed that there existed two gratings simultaneously, one was caused by the photorefractive effect, and the other was contributed from the photo-isomerization process. The dynamic process for the photorefractive grating was explained with a modified band transport model.

引用

页码：351 / 353

页数：3

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