Nonlinear Optical Properties of Some New Conjugated Copolymers  

作　　者：YANG Qi-guang SI Jin-hai LIU Xu-chun XU Gang YE Pei-xian LEI Zi-qiang ZHAN Xiao-wei YANG Mu-jie 杨启光;司金海;刘旭春;徐刚;叶佩弦;雷自强;占肖卫;杨慕杰(Institute of Physics&Center for Condensed Matter Physics,Chinese Academy of Sciences,Beijing 100080;Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027)

机构地区：[1]Institute of Physics&Center for Condensed Matter Physics,Chinese Academy of Sciences,Beijing 100080 [2]Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027

出　　处：《Chinese Physics Letters》1998年第3期189-191,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No.19734004。

摘　　要：The ground-and the excited-state nonlinearities of two new copolymers are investigated in nanosecond scale at 1064 nm.It is found that the excited-state susceptibility is dramatically larger than the corresponding ground-state susceptibility for each sample.The experimental results also give evidence that superlattice structure of the copolymers can enhance,especially for the excited state,the molecular hyperpolarizabilities significantly.This enhancement may be attributed to the confinement effect of the pump-induced carriers.

关 键 词：EXCITED SUSCEPTIBILITY COPOLYMER 

分 类 号：O63[理学—高分子化学]