  Polarization dependences of the terahertz radiation emitted by hot charge
carriers in p-Te have been studied both theoretically and experimentally. The
angular dependences of the spontaneous radiation emission by hot carriers is
shown to originate from the anisotropy of their dispersion law and the
anisotropy of the dielectric permittivity of a tellurium crystal. We have shown
that the polarization dependences of radiation are determined by the angle
between the crystallographic axis C3 in p-Te and the polarization vector; they
are found to have a periodic character.
