SPECTROSCOPIC INVESTIGATION OF THE ELECTROOPTIC NONLINEARITY IN POLY(2,5-THIENYLENE VINYLENE)

被引：34

作者：

GELSEN, OM ^{[1
]}

BRADLEY, DDC ^{[1
]}

MURATA, H ^{[1
]}

TAKADA, N ^{[1
]}

TSUTSUI, T ^{[1
]}

SAITO, S ^{[1
]}

机构：

[1] KYUSHU UNIV,GRAD SCH ENGN SCI,DEPT MAT SCI & TECHNOL,KASUGA,FUKUOKA 816,JAPAN

来源：

JOURNAL OF APPLIED PHYSICS | 1992年 / 71卷 / 02期

关键词：

D O I：

10.1063/1.350401

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the results of a spectroscopic investigation of the quadratic electro-optic nonlinearity in poly(2,5-thienylene vinylene). Electroabsorption spectra closely resemble the second energy derivative of the unperturbed pi-pi* absorption and show oscillations associated with the strong vibronic features present therein. The dispersion of both the real and imaginary parts of chi(3) (- omega;0,0,omega) has been determined and we find that Re{chi(3)} has a peak value of 7.5 x 10(-9) esu at 1.83 eV and Im{chi(3)} has a peak value of 6.2 x 10(-9) esu at 1.78 eV. This nonlinearity is responsible for a photorefractive effect under resonant photoexcitation.

引用

页码：1064 / 1069

页数：6

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