RESONANCE RAMAN-SCATTERING OF MULTIMODE SYSTEMS - FOURIER AMPLITUDE APPROACH

The time-dependent description of resonance Raman scattering of multim ode systems is presented and discussed. The basic quantities of the th eory are the Fourier transforms of the Raman amplitudes. For a number of vibronic models they are related to the optical absorption. These r elationships enable one to transform the absorption spectrum to the Ra man excitation profiles. In the transform method, model parameters are needed only for the Raman mode; the multimode information is automati cally included via the measured optical absorption. The method holds f or an arbitrary temperature. Transform relationships are derived for t he basic model of linear vibronic coupling and for more complicated mo dels including linear non-Condon interaction, frequency shifts and mod e mixing with electronic excitation, the Jahn-Teller effect and inhomo geneous broadening.