On relative monochromatic of laser radiation was undergone quasistationary self-focusing

This work offers a more realistic model of phase modulation under quasistationary self-focusing. The full spectrum is obtained for self-focusing laser radiation pulses which have passed through the Kerr environment of definite length. The spectrum has a complex character with a lot of oscillations. This study also shows that the effect of group delay, in spite of the fact that it has essential value for calculation of focal area speed, and its position does not influence on resulting laser radiation spectrum.