Nonlinear scattering of laser radiation and kinetics of chemical reactions in microvolumes of material

An experimental investigation was made of nonlinear scattering of laser radiation during repeated irradiation of an absorbing microinhomogeneity in BK-8 glass. Theoretical calculations of the experimental data were carried out and dependences of the change in the absorption coefficient and size of the inhomogeneity as a function of the number of radiation pulses were obtained. On the basis of these results, some conclusions were drawn on the chemical reactions taking place in the part of the inhomogeneity heated to high temperatures, and on their kinetics.