By S. G. Rautian (auth.), Academician D. V. Skobel’tsyn (eds.)
In this paper we investigated the dynamics of the procedures happening in a Q-switched laser. This paintings was once prompted via the shortcoming of information at the spatial and temporal improvement of iteration, regardless of the most obvious significance of such facts within the use of big mild pulses in in vestigations of the nonlinear interplay of radiation and topic. From a scientific con sideration of a comparatively uncomplicated version of a Q-switched laser we analytically investigated major stages of improvement of the large pulse - the section of linear improvement of new release, which starts with amplification of the spontaneous emission within the modes, and the part of nonlinear transverse improvement, within which the large mild pulse right is emitted. In advert dition, fo r a radical inve stigation of the image of improvement of the heartbeat as an entire the equations have been numerically built-in. ' next experiments [26, 27] proven the prevalence of transverse improvement of the large pulse, whereas fresh experiments on nonlinear amplification  have proven the sig nificance of this influence within the propagation of the enormous pulse in a nonlinear medium. A recognize ledge of the transverse improvement of the large pulse would seem to be crucial for the precise choice of the genuine energy of the sunshine box in experiments on multi photon seasoned cesses . The constructed concept additionally ends up in strategies for the layout of lasers to generate great gentle pulses of minimal size and minimal divergence of emission.