THE ROLE OF NATURAL GYROTROPY IN THE FORMATION OF ELECTROOPTICAL PROPERTIES OF CUBIC NONCENTROSYMMETRIC CRYSTALS - II - FEATURES OF FIELD DEPENDENCES OF MODULATION CHARACTERISTICS

The influence of gyrotropy on the field dependences of modulation char acteristics of cubic noncentosymmetric crystals under conditions of th e longitudinal electrooptical effect is studied. Basic features of the se characteristics are revealed which are associated with changes of p olarity of an external electric field, optical bias, and wave front re versal. It is shown that the influence of gyrotropy on the form of mod ulation characteristics becomes weaker with increasing electric field and, in the limit of strong fields, vanishes completely.