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Title: Multiphoton fluorescence free hyperpolarizabilities of subphthalocyanines
Authors: Olbrechts, Geert ×
Wostyn, Kurt
Clays, Koen
Persoons, Andre
Kang, SH
Kim, K #
Issue Date: Jan-1999
Publisher: Elsevier science bv
Series Title: Chemical Physics Letters vol:308 issue:3-4 pages:173-175
Abstract: Subphthalocyanines have potential applications in the field of second-order nonlinear optics. However, multiphoton fluorescence has seriously complicated the accurate retrieval of their molecular first hyperpolarizability beta by hyper-Rayleigh scattering. We report here hyper-Rayleigh scattering results on subphthalocyanines with experimental evidence of effective multiphoton fluorescence suppression. It is demonstrated that multiphoton fluorescence does indeed contribute to the scattering signal but that accurate values for the first hyperpolarizabilities can be deduced when taking this properly into account. More generally, this shows that experimental evidence of the absence of a multiphoton fluorescence contribution to hyper-Rayleigh scattering should be included whenever hyperpolarizability values of fluorescent compounds are reported. (C) 1999 Elsevier Science B.V. All rights reserved.
URI: 
ISSN: 0009-2614
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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