Abstract: THe laser oscillator with a cavity completed by the refractive index grating induced by generating beams in a nematic liquid crystal cell was studied experimentally and theoretically. It is shown that both the thermal and orientational nonlinearity of the liquid crystal can provide the holographic mirror formation and the self-starting condition in the laser oscillator. The self-starting laser with the nonlinear mirror demonstrates single-longitudinal- mode generation with good quality of the beam. !12
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