Nonlinear stochastic effects during the action of noise on relaxation oscillations in a ring solid-state laser

The influence of the pump noise intensity on the characteristics of the fundamental relaxation frequency of the emission spectrum of a ring chip laser operating in the self-modulation regime of the first kind is studied theoretically and experimentally. It is shown that the noise effects give rise to such nonlinear stochastic phenomena as a change in the relaxation oscillation frequency, a noticeable broadening of the relaxation peak in the emission spectrum, and the resonance dependence of the amplitude of this peak on the noise intensity (the peak becomes maximal at a particular noise intensity).