Title: Comparison between optical nonlinearity relaxation times from coherent second-harmonic generation and from incoherent hyper-Rayleigh scattering
Authors: Matsuda, N ×
Olbrechts, Geert
Put, EJH
Clays, Koen
Persoons, Andre #
Issue Date: Jan-1996
Publisher: Amer inst physics
Series Title: Applied Physics Letters vol:69 issue:27 pages:4145-4147
Abstract: Femtosecond hyper-Rayleigh scattering has recently been used to determine the spatial correlation length between nonlinear optical chromophores in polymer films [G. Olbrechts et al., Chem. Phys. Lett. 253, 135 (1996)]. This correlation length corresponds to the effective interaction length for frequency doubling in waveguide format, as derived from phase-matching curves. The temporal characteristics of this correlation length have now been studied and compared with thermal relaxation times, obtained with coherent second-harmonic generation. The correlation length decays much faster than the second-harmonic intensity, indicating that the efficiency of a second-order waveguide process could decay much faster than generally anticipated. (C) 1996 American Institute of Physics.
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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