Dependence of the frequency of low-frequency relaxation oscillations of a solid-state ring laser on the polarisation

An investigation is reported of the dependence of the frequency of low-frequency relaxation oscillations of the radiation power of solid-state ring lasers on the nature of the polarisation of the counterpropagating optical waves and on the ring cavity parameters. It is shown that the maximum frequency of antiphase low-frequency oscillations corresponds to the linear collinearly oriented polarisations of the counterpropagating waves. An increase in the ellipticity of the counterpropagating waves reduces the frequency of the antiphase oscillations and this frequency tends to zero for orthogonal circular polarisations of these waves.