Abstract:
A method is described for the formation of optical radiation with a rotating polarisation vector whose rotation frequency varies over a wide range. The method employs two identical acoustooptic (AO) modulators made of a gyrotropic crystal. The experimentally realised range of the rotation frequency of the polarisation vector of optical radiation with a wavelength of 0.63 × 10-4 cm with the use of AO TeO2 cells is found to be ~6 MHz.
Keywords:acousto-optic diffraction, Bragg regime, rotation of the polarisation vector.