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Analysis of the third‐order susceptibilities of triplet excited molecules using nanosecond time‐resolved resonance CARS
Author(s) -
Funk J.M.,
Materny A.
Publication year - 1998
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/(sici)1097-4555(199812)29:12<1071::aid-jrs343>3.0.co;2-0
Subject(s) - nanosecond , excited state , anthracene , resonance (particle physics) , triplet state , raman spectroscopy , chemistry , wavelength , molecule , spectral line , laser , molecular physics , atomic physics , physics , optics , photochemistry , quantum mechanics , organic chemistry
Nanosecond time‐resolved resonance CARS spectra ofanthracene and 9,10‐dichloroanthracene in the lowest excitedtriplet state are reported. Simultaneous fitting of a series oftime‐resolved CARS spectra to appropriate lineshape equationswas used to determine the molecular third‐order susceptibilityparameters of these electronic excited state molecules unambiguously.The capability of this method to study the resonance behaviour ofthese parameters is demonstrated by the determination of the sign ofthe imaginary part I of the Raman resonant CARS susceptibilityof T 1 triplet anthracene at two different pump laserwavelengths. © 1998 John Wiley & Sons.