Anisotropy of optical transition in direct bandgap AIII-BV bulk semiconductor

Summary form only given. Linear gain in bulk zinc-blende semiconductor is assumed to be isotropic. This is due to the fact that the wave functions in the centre of the Brillouin zone are proper functions in the general point of the Brillouin zone as long as the k/spl I.oarr//spl middot/p/spl I.oarr/ theory takes into account the interaction only between the conductance and the valence bands. These functions give irreducible representations not only of the T/sub d/ double point group but also of the SO(3) double point group. Therefore the transitions are found to be isotropic. The interaction with other bands results in the Luttinger Hamiltonian. In this paper, the solutions of the Luttinger Hamiltonian in the general point of the Brillouin zone are used to calculate the transition radiation probability from conductance bands to heavy hole band.