Influence of group II and III shallow accepters on the gain of p-Ge lasers

The influence of intracenter absorption on the gain and the emission spectr um of p-Cc lasers wits investigated. Self-absorption of p-Ge laser emission by group III acceptors in active media leads to a decrease of the gain as well as to a spectral shift in the amplification and emission spectra. Expe rimental spectra of p-Ge laser emission show evidence of transitions betwee n shallow impurity states, even in the presence of high applied electric an d magnetic fields. (C) 2001 Elsevier Science B.V. All rights reserved.