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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.
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Bückers et al. (2008) studied this question.
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