Probing of spatial orientational correlations between chromophores in polymer films by femtosecond hyper-Rayleigh scattering

被引：12

作者：

Olbrechts, G ^{[1
]}

Put, EJH ^{[1
]}

Clays, K ^{[1
]}

Persoons, A ^{[1
]}

Matsuda, N ^{[1
]}

机构：

[1] NATL INST MAT & CHEM RES,DEPT ANALYT CHEM,TSUKUBA,IBARAKI 305,JAPAN

来源：

CHEMICAL PHYSICS LETTERS | 1996年 / 253卷 / 1-2期

关键词：

D O I：

10.1016/0009-2614(96)00219-9

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：

Femtosecond hyper-Rayleigh scattering has been used to probe the spatial orientational fluctuations between nonlinear optical chromophores as dopants in spincoated polymer films. The fluctuation in the second-order incoherently scattered light intensity upon micro-translating the solid sample is indicative of the degree of spatial correlation between the individual chromophores. The decay of the autocorrelation function of this fluctuating signal is characterized by a spatial correlation length. Electric-field poling of dipolar chromophores is shown to increase this correlation length. The longer correlation length after poling results from a higher degree of spatial orientational correlation between the individual chromophores.

引用

页码：135 / 140

页数：6

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