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Influence of the difference in polarisations of counterpropagating waves on the dynamics of solid-state ring lasers

The influence of polarisations of counterpropagating waves on the dynamics of self-modulation oscillations of the first kind in solid-sate ring lasers is studied theoretically and experimentally. The characteristic features of amplitude and frequency characteristics of radiation and the spectra of relaxation oscillations appearing at different polarisations of counterpropagating waves are analysed. The obtained experimental results are well described by the vector model of a solid-state ring laser, which takes into account different polarisations of the ring resonator for counterpropagating waves.