Abstract
The change in the inverse Raman band shape was observed by varying the probe frequency in the vicinity of a single photon resonance with a structured electronic absorption band of rhodamine 640 (a strongly fluorescent molecule). The observed band-shape change could be satisfactorily reproduced only if the effect of vibronic transition was properly taken into account. Simulation of the inverse Raman band shape is useful in obtaining structural information on the excited electronic states of fluorescent molecules.
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