INCREASE IN ROTATION FREQUENCY OF POLARIZ ATION ELLIPSE IN A RESONATOR AND IN A HE-NE-LASER WITH MODULATED ANISOTROPY DIRECTIONS

The dynamics of a linear He-Ne laser generation at lambda = 1.15 mum i s investigated theoretically as well as the modes of a resonator whose rotating anisotropy directions are harmonically modulated. It is foun d that in the resonator and in the laser the characteristic oscillatio ns may set in, such that the polarization ellipse rotates at a higher frequency than the anisotropy directions of the modulator do. The anis otropy and modulation parameters are obtained for which one can observ e an increase in rotation frequency of the polarization ellipse.