Self-action effect connected with a gradual increase in the light pulse wavelength

Summary form only given. Processes those are responsible for an increase in the wavelength of a light pulse propagating in any optical medium owing to the electrostriction effect are considered. It is shown that the decrease in the light pulse frequency can be explained by exciting disturbances in the optical medium. As a result, a part of the pulse energy is taken away and the red shift of the light takes place. Among various self-action effects at propagation of an intense light in a nonlinear optical medium such as self-trapping, self-focusing, self-confinement, optical bistability, optical solitons, there is once more self-action effect connected with a gradual increase in the light pulse wavelength. Estimations of the light wavelength increase are presented.