Influence of perturbation of the surface of a liquid on the acoustic field excited in the liquid by Q-switched laser radiation

A theoretical analysis is made of the influence of perturbation of the surface of a liquid on the acoustic field excited in this liquid by Q-switched laser radiation. The angular distribution of the average acoustic pressure is determined. The acoustic pressure variance is calculated for Gaussian statistics of slopes and arbitrary statistics of displacements of the liquid surface. A qualitative analysis of the results obtained is given.