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VOLUME 59 (1994) | ISSUE 2 | PAGE 86
Effects of shallow acceptors in a germanium hot-hole laser
Recombination involving spontaneously emitted optical phonons leads to a significant filling of states of shallow acceptors in a p-Ge hot-hole laser. Under conditions corresponding to photoionization of the ground state, the recombination creates a population inversion involving these states. Calculations explain several features observed experimentally, including the effects of stimulated emission in impurity absorption lines.