THE ROLE OF NATURAL GYROTROPY IN THE FORMATION OF ELECTROOPTICAL PROPERTIES OF CUBIC NONCENTROSYMMETRIC CRYSTALS - I - ANISOTROPY OF INDUCED BIREFRINGENCE AND POLARIZATION OF NATURAL WAVES

A study of the influence of gyrotropy on features of electrooptical pr operties of cubic noncentrosymmetric crystals is reported. The relatio n between the magnitude of crystal gyrotropy and the optical anisotrop y induced in a crystal by an electric field is found. Features of fiel d dependences of the polarization of natural optical modes and their r efractive indices are considered. It is shown that the gyrotropy cause s the dependence of induced optical gyrotropy on the electric field in crystals possessing the linear electrooptical effect.