Article (Scientific journals)
Fourier analysis of the femtosecond hyper-Rayleigh scattering signal from ionic fluorescent hemicyanine dyes
Clays, Koen; Wostyn, Kurt; Olbrechts, Geert et al.
2000In Journal of the Optical Society of America. B, Optical Physics, 17 (2), p. 256 - 265
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Keywords :
Statistical and Nonlinear Physics; Atomic and Molecular Physics, and Optics
Abstract :
A series of five fluorescent and ionic dimethylamino stilbazolium homologues with increasing conjugation length (from ethenyl to decapentaenyl) is investigated by high-frequency, amplitude-modulated femtosecond hyper-Rayleigh scattering at 1300 nm. A hyperpolarizability value that is not overestimated by the presence of a multiphoton fluorescence contribution is obtained from the Fourier analysis of the hyper-Rayleigh scattering signal. The demodulation curve (decrease of Fourier amplitude versus modulation frequency) is characterized by both the hyperpolarizability value and the fluorescence decay parameters. The fluorescence decay parameters are accurately determined independently by single-photon counting. A detailed analysis of the fluorescence decay parameters from the hyper-Rayleigh scattering demodulation curve and of their relation to the fluorescence decay parameters obtained from single-photon counting experiments is presented. The inherent hyperpolarizability value for these chromophores shows a maximum of (2045 ± 35) × 10-30 esu or (760 ± 13) × 10-50 C3 m3 J-2 for the hexatrienyl conjugation length. A comparison with theoretical calculations suggests the importance of trans-cis isomerization in the excited state. © 2000 Optical Society of America.
Disciplines :
Chemistry
Author, co-author :
Clays, Koen;  Department of Chemistry, Ctr. Res. Molec. Electronics P., University of Leuven, B-3001 Leuven, Belgium
Wostyn, Kurt;  Department of Chemistry, Ctr. Res. Molec. Electronics P., University of Leuven, B-3001 Leuven, Belgium
Olbrechts, Geert;  Department of Chemistry, Ctr. Res. Molec. Electronics P., University of Leuven, B-3001 Leuven, Belgium
Persoons, André;  Department of Chemistry, Ctr. Res. Molec. Electronics P., University of Leuven, B-3001 Leuven, Belgium ; Optical Sciences Center, University of Arizona, Tucson, AZ 85721, United States
Watanabe, Akira;  Inst. for Chemical Reaction Science, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
Nogi, Kyoko;  Inst. for Chemical Reaction Science, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
Duan, Xuan-Ming;  Inst. for Chemical Reaction Science, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
Okada, Shuji;  Inst. for Chemical Reaction Science, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
Oikawa, Hidetosbi;  Inst. for Chemical Reaction Science, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
Nakanishi, Hachiro;  Inst. for Chemical Reaction Science, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
Vogel, Henryk;  Lab. for Chem. of Novel Materials, Ctr. Res. Molec. Electronics P., University of Mons-Hainaut, B-7000 Mons, Belgium
Beljonne, David ;  Université de Mons - UMONS > Faculté des Sciences > Service de Chimie des matériaux nouveaux
Brédas, Jean-Luc;  Lab. for Chem. of Novel Materials, Ctr. Res. Molec. Electronics P., University of Mons-Hainaut, B-7000 Mons, Belgium ; Department of Chemistry, University of Arizona, Tucson, AZ 85721-0041, United States
More authors (3 more) Less
Language :
English
Title :
Fourier analysis of the femtosecond hyper-Rayleigh scattering signal from ionic fluorescent hemicyanine dyes
Publication date :
2000
Journal title :
Journal of the Optical Society of America. B, Optical Physics
ISSN :
0740-3224
Publisher :
Optical Society of America (OSA)
Volume :
17
Issue :
2
Pages :
256 - 265
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
S817 - Chimie des matériaux nouveaux
Research institute :
Matériaux
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