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Chemical Physics

Theoretical analysis of resonant raman scattering: Simulations of lineshapes and excitation profiles

Leonardo Angeloni, Pier Francesco Fracassi, Raffaele Guido Della Valle

Published Apr 1, 1985• 5 citations
Publisher
DOI
10.1016/0301-0104(85)80054-9

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Time-resolved secondary-radiation spectra have been calculated for a three-level system coupled with a reservoir under pulsed-light excitation. It has been found that a dip is observed in the time profile of the secondary-radiation intensity near the resonance-excitation condition, when the spectral bandwidth of the detection system is increased. If the secondary radiation is divided into the Raman and luminescence components that are, respectively, due to the mean value and fluctuation of the photoinduced emission dipole, the dip is observed only in the former. A simple analysis reveals that this dip originates from the quantum interference between the resonant and nonresonant contributions to the Raman scattering.