Influence of Nonlinear Environmental Properties on the Process of Pulse-Stimulated Compulsory Combined Scattering under Femtosecond Pumping Conditions

Impulsive stimulated Raman scattering (ISRS) observed by pump-probe experiments was considered. The response from the model system for ISRS-process is calculated for femtosecond laser pump pulse. The response of the model system for the processes of the is-SRS type under the conditions of femtosecond pumping is calculated: the time behavior of the ISC signal is theoretically calculated, and also the frequency dependence of the amplitude of the oscillations excited by the laser pulse with a femtosecond duration. Qualitative agreement is demonstrated for the case of the experiment with the perylene molecule.