Temperature dependence of the third-order nonlinear susceptibility, χ^(3) Of CS_2 and dodecylbenzene

The dependence of the third-order nonlinear susceptibility, χ((3)), of CS(2) and C(18)H(30) (dodecylbenzene) on temperature was measured by the method of degenerate four-wave mixing. The empirical formula for this dependence was obtained. An explanation of this relationship was also given through the application of the model of a polar molecule moving in a viscous medium under the action of a laser beam.