Proceedings PaperSpatial inhomogeneities and temporal fluctuations of the refractive index in gas laser media
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The frequency of the laser oscillators depends on the optical path length of the resonator, which in turn is influenced both by mechanical perturbations in mirror position and by refractive index variations on the gain medium. Three mechanisms contributing into refractive index changes (temporal and spatial as well) can be distinguished: gas density, electron-plasma density and gain-induced susceptibility.