CREATION OF 2ND-ORDER NONLINEARITY IN POLYMERS BY LIGHT-INDUCED ASYMMETRIC CHARGE INJECTION

被引：6
作者：
COHEN, R
BERKOVIC, G
机构：
[1] Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot
来源：
OPTICS LETTERS | 1994年 / 19卷 / 14期
关键词：
D O I：
10.1364/OL.19.001025
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A new method for creating and enhancing second-order optical nonlinearity in polymer-dye films by asymmetric photoinjection of electric charges is introduced. The samples are composed of two separate layers, an organic photoconductor that generates the electric charges and a hyperpolarizable organic film that traps them. The nonlinearity caused by asymmetric charge injection does not arise from dipolar alignment; consequently, it can be observed either in the absence of, or to enhance, the conventional dipolar alignment nonlinearity.
引用
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页码：1025 / 1027
页数：3
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