USING OF BROAD-BANDWIDTH STIMULATED RAMAN-SCATTERING IN SUBPICOSECOND TRANSIENT SPECTROSCOPY OF OPTICAL KERR EFFECT

The technique of ultrafast relaxation measuring of optically induced anisotropy in liquids is presented. It is based on four-wave mixing of broad-bandwidth laser radiations. In the realized Kerr-shutter configuration of interaction the correlated radiations of the nanosecond superluminescent dye laser and its first Stokes component of stimulated Raman scattering were used. The relaxation constants of the Kerr nonlinearity of a number of organic liquids have been measured. The time resolution was limited by the correlation time equal to 130+/-30 fsec.