Resonance Raman scattering of multimode systems: Fourier amplitude approach

Abstract

AbstractThe time‐dependent description of resonance Raman scattering of multimode systems is presented and discussed. The basic quantities of the theory are the Fourier transforms of the Raman amplitudes. For a number of vibronic models they are related to the optical absorption. These relationships enable one to transform the absorption spectrum to the Raman excitation profiles. In the transform method, model parameters are needed only for the Raman mode; the multimode information is automatically included via the measured optical absorption. The method holds for an arbitrary temperature. Transform relationships are derived for the basic model of linear vibronic coupling and for more complicated models including linear non‐Condon interaction, frequency shifts and mode mixing with electronic excitation, the Jahn–Teller effect and inhomogeneous broadening.