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Theoretical Analysis of Optical Gain in Quantum Well Lasers Including Valence-Band Mixing Effect
1997
Acta Physica Polonica. A
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The linear optical gain in the. AIGaAs/GaAs quantum well lasers is studied theoretically, taking into account the valence-band mixing effect. Our approach is based on the multiband effective-mass theory (k p method) and the density-matrix formalism. In order to obtain the valence bands' structure we employ the 4 x 4 Luttinger-Kohn Hamiltonian, neglecting the coupling to the split-off band. The spectral dependence of the linear optical gain is calculated using the density-matrix method with
doi:10.12693/aphyspola.92.903
fatcat:u3okmy4jzbacdb3h5v5tm7yk5m