Hp. Deuel et al., PROBING INTERMOLECULAR DYNAMICS IN LIQUIDS BY FEMTOSECOND OPTICAL KERR-EFFECT SPECTROSCOPY - EFFECTS OF MOLECULAR SYMMETRY, Journal of physical chemistry, 98(48), 1994, pp. 12600-12608
Intermolecular dynamics in a series of nitriles and substituted methan
es are investigated using optical-heterodyne-detected Raman-induced Ke
rr effect spectroscopy (OHD-RIKES) with similar to 30 fs laser pulses.
The results obtained unequivocally establish a correlation between mo
lecular symmetry and the ratio of intermolecular vs intramolecular con
tribution to the Kerr signal. Quantitative connections between molecul
ar anisotropy and optical Kerr measurements are discussed. The utility
of low-frequency spectral densities measured by OHD-RIKES in relation
to studies on dynamics in liquids is addressed.