DETERMINATION OF THE 2 1ST NONTRIVIAL ORIENTATIONAL ORDER PARAMETERS IN LB FILMS OF ROD-LIKE MOLECULES BY 3RD-ORDER SUM FREQUENCY MIXING

被引：6

作者：

CHA, M

NEHER, D

EMBS, FW

MITTLERNEHER, S

STEGEMAN, G

机构：

[1] Center for Research in Electro-Optics and Lasers, University of Central Florida, Orlando, FL 32826

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 202卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0009-2614(93)85348-R

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We demonstrate a new method for investigating orientational order in Langmuir-Blodgett films built from rod-like poly[bis(m-butoxyphenyl)silane] molecules. Two laser beams with different input frequencies omega1 and omega2 were collinearly overlapped to generate mixed light at the frequency 2omega1 + omega2 using all possible permutations of the beam polarizations. From the independent tensor components of chi(3)(-omega3; omega1, omega1, omega2) the first non-trivial in-plane order parameters C2 and C4 could be deduced with high accuracy. The orientational order could be well described by a two-dimensional diffusion model.

引用

页码：44 / 50

页数：7

共 22 条

[1] TEMPERATURE-DEPENDENCE OF THE 3RD-ORDER NONLINEAR OPTICAL SUSCEPTIBILITIES IN POLYSILANES AND POLYGERMANES [J].