Selective laser heating and nonlinear light scattering in a homogeneous medium

Observations of nonlinear light scattering on laser produced temperature inhomogeneities, the centers of which are connected with some absorbing molecules, are reported. Good agreement is found between the chosen model and the experimentally observed scattering intensity. For an incident intensity of 250 MW/sq cm, the results indicate a Delta T in the center of the inhomogeneity of 65 K, and an average water heating in the focus of 0.4 K.