π-electron density dependence of third-order optical nonlinearities in poly(1,4-phenylene vinylene) derivatives

被引：17

作者：

Sun, ZR

Yang, XH

Huang, YP

Ding, LG

Qin, LJ

Wang, ZG

机构：

[1] E China Normal Univ, Lab Quantum Opt, Shanghai 200062, Peoples R China

[2] E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China

来源：

OPTICS COMMUNICATIONS | 1999年 / 160卷 / 4-6期

基金：

中国国家自然科学基金;

关键词：

poly(1,4-phenylene vinylene); third-order nonlinear optical properties; poly(2-bromo-1,4-phenylene vinylene);

D O I：

10.1016/S0030-4018(99)00003-6

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The third-order nonlinear optical properties of poly(1,4-phenylene vinylene) (PPV), poly(2-bromo-1,4-phenylene vinylene) (BrPPV) and poly(2-chloro-1,4-phenylene vinylene) (ClPPV) were studied by forward degenerate four-wave mixing (DFWM). They have large and ultrafast third-order optical nonlinear responses, which mainly arise from the distortion of the large pi-conjugated electronic charge distribution in the backbone. It was found that there was a significant contribution to pi-electron density and thus chi((3)) values from the substituents at the phenylene ring. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：289 / 291

页数：3

共 13 条

[1] Polymer-based waveguides and optical switching [J].