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Determination of potential curve parameters of excited electronic states of polyatomic molecules by resonance CARS
Author(s) -
Lau A.,
Pfeiffer M.,
Werncke W.,
Weigmann H.J.,
Lenz K.
Publication year - 1988
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/jrs.1250190509
Subject(s) - polyatomic ion , resonance (particle physics) , excited state , cyanine , line (geometry) , raman spectroscopy , chemistry , photoisomerization , molecule , atomic physics , molecular physics , optics , physics , biochemistry , geometry , mathematics , organic chemistry , isomerization , fluorescence , catalysis
Resonance CARS line‐shape analysis has been applied to determine the parameters of the excited electronic state potential curves of a cyanine dye and its short‐lived photoisomers during the process of photoisomerization. For this very complicated situation other methods for the estimation of these values would fail. The origin shift parameters determined are very small and the homogeneous line width is smaller than the line width of the absorption band.