Control of Molecular Dynamics in Benzonitrile and Femtosecond Spectroscopy of the Ultrafast Optical Kerr Effect

The decomposition of the recorded signal of the ultrafast optical Kerr effect (OKE) in benzonitrile into its components corresponding to different molecular contributions is considered. An optical scheme based on two-pulse nonresonant pumping with the registration of a test laser pulse is devised for this purpose.