The qualitative models of superradiance in the integrated environments

Abstract

The dynamics of the two-layer system near the threshold of stimulated emission, when the initial population inversion is equal to the square root of full number of states has been discussed. The number of quanta begins to grow exponentially when this threshold is exceeded. An effort to clarify the nature of this threshold has been made in the article. Therefore, spontaneous and induced constituents of an emission have been isolated and the corresponding reduction in the system of equations has been made. Using qualitative models has largely clarified the details of the stimulated emission pulse formation process and increase in the spontaneous emission intensity.