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Title: Femtosecond hyper-Rayleigh scattering study of spatial orientational correlations between chromophores
Authors: Clays, Koen ×
Wu, Ming
Persoons, Andre #
Issue Date: Jan-1996
Publisher: World Scientific
Series Title: Journal of Nonlinear Optical Physics & Materials vol:5 issue:1 pages:59-71
Abstract: Since the introduction of Hyper-Rayleigh scattering (HRS) as a measurement technique for the first hyperpolarizability of molecules in solution,(1) the importance of fluctuations was realized.(2) For isotropic solutions, a combination of the spatial and temporal orientational fluctuations causes the instantaneous and local deviation from macroscopic centrosymmetry, necessary to observe a second-order signal. The fluctuations in the spatial orientational distribution function of nonlinear optical chromophores cause an HRS signal that fluctuates as a function of position in solid samples. The correlation length, characterizing the decay of the autocorrelation function of this fluctuating signal, indicates the degree of spatial correlation between these chromophores. The development of femtosecond HRS was instrumental for the study of orientational correlations.(3)
ISSN: 0218-8635
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
Cardiovascular Imaging and Dynamics
× corresponding author
# (joint) last author

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