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Theoretical Performance of MID-IR Broken-Gap Superlattice Quantum Well Lasers

Published online by Cambridge University Press:  10 February 2011

Michael E. Flatté ,
C. H. Grein ,
J. T. Olesberg  and
T. F. Boggess
Michael E. Flatté
Affiliation:
Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242
C. H. Grein
Affiliation:
Department of Physics, University of Illinois, Chicago, IL 60607
J. T. Olesberg
Affiliation:
Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242
T. F. Boggess
Affiliation:
Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242
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Abstract

We will present calculations of the ideal performance of mid-infrared InAs/InGaSb superlattice quantum well lasers. For these systems several periods of an InAs/InGaSb type-II superlattice are grown in quantum wells. Calculations of the non-radiative and radiative lifetimes of the carriers utilize the full non-parabolic band structure and momentum-dependent matrix elements calculated from a semi-empirical multilayer K · P theory. From these lifetimes, threshold current densities have been evaluated for laser structures. We find serious problems with the hole and electron confinement in the superlattice quantum wells grown to date, and propose a four-layer superlattice structure which corrects these problems.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 450: Symposium O – Infrared Applications of Semiconductors , 1996 , 85
Copyright
Copyright © Materials Research Society 1997

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References

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