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

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 ind...

Full description

Saved in:
Bibliographic Details
Published in:Chemical physics letters 1996-04, Vol.253 (1), p.135-140
Main Authors: Olbrechts, Geert, Put, Erik J.H., Clays, Koen, Persoons, André, Matsuda, Naoki
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(96)00219-9