А phenomenological theory of self-action of elliptically polarized light in crystals of highest and medium categories is constructed. А new scheme of polarization spectroscopy is suggested which allows - independent of crystal symmetry - separation of the contributions of the various mechanisms of nonlinear optical rotation and deformation of the polarization ellipse, and provides twice as much information on сubiс nonlinearity and its spatial dispersion as the systems based on linearly polarized waves.
Department of General Physics and Wave Pr oce sses
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