The time dependent solution of the masterequation for a laser system
Starting from the masterequation for the density matrix the differential equation for the quasidistribution function of a laser field with non-markoffian character is derived. This equation and its solution may be compared with the Fokker-Planck equation given byRisken1 andHempstead andLax2, where the laser field has markoffian character. Both solutions approximately coincide only in the threshold region.