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Microscopic calculation and measurement of the laser gain in a (GaIn)Sb quantum well structure

Simulation und Messung des optischen Gewinnes in (GaIn)Sb Quantentopf Heterostrukturen
: Bückers, C.; Thränhardt, A.; Koch, S.W.; Rattunde, Marcel; Schulz, N.; Wagner, Joachim; Hader, J.; Moloney, J.V.


Applied Physics Letters 92 (2008), No.7, Art. 071107, 3 pp.
ISSN: 0003-6951 (Print)
ISSN: 1077-3118
ISSN: 1931-9401 (online)
Journal Article
Fraunhofer IAF ()
laser gain; optical gain; optischer Gewinn; GaSb; microscopic calculation; Mikroskopische Theorie; diode laser; Diodenlaser

A detailed microscopic calculation and experimental measurements of the optical gain from a (GaIn)Sb structure are presented. For a given excitation density, the gain in the (GaIn)Sb material system considerably exceeds that of a comparable equivalent (GaIn)As/GaAs structure. The physical reasons for this high gain are analyzed and attributed mostly to band structure effects.