Combined isotropic and anisotropic diffraction in paratellurite on "slow" acoustic wave
It is suggested and investigated a regime of the Bragg acousto-optic (AO) interaction in paratellurite provided a combined isotropic and anisotropic diffraction into the first order. For the light with the wavelength 0.63´10 <sup>-4 cm</sup> diffracted on the “slow” acoustic wave with the frequency 25 MHz the effect occurs at the AO plane diffraction tilt equal to ~3.2 deg respect to the optical axis of crystal. The discovered effect is confirmed experimentally.