Non-isochronism of the radiation frequency of a solid-state laser with a homogeneously broadened gain line

The dependence of the radiation frequency of a solid-state laser on the laser radiation field amplitude is studied theoretically. It is shown the non-isochronism of the laser frequency appears only when the contribution of spontaneous emission to the generated resonator mode is taken into account and is manifested most strongly at small excesses of the pump over the threshold.