Journal article
THEORETICAL PERFORMANCE LIMITS OF 2.1-4.1 MU-M INAS/INGASB, HGCDTE, AND INGAASSB LASERS
Journal of applied physics, Vol.78(7), pp.4552-4559
10/01/1995
DOI: 10.1063/1.359798
Abstract
Ideal threshold current densities of 2.1-4.1 mu m IR lasers are calculated for active layers composed of InAs/InGaSb superlattices, InGaAsSb quantum well quaternaries, InAsSb bulk ternaries, and HgCdTe superlattices. The fully K-dependent band structure and momentum matrix elements, obtained from a superlattice K . p calculation, are used to calculate the limiting Auger and radiative recombination rates and the threshold current density. InGaAsSb quantum wells and InAs/InGaSb superlattices are found to be more promising laser candidates than HgCdTe superlattices and InAsSb bulk ternaries. The calculated threshold current densities of InAs/InGaSb superlattices are similar to those of InGaAsSb active layers at 2.1 mu m, but are significantly lower at longer wavelengths. Comparison with experiment indicates that the threshold current densities of InGaAsSb-based devices are about three times greater than those calculated for 25 cm(-1) gain. The threshold current densities of present InAs/InGaSb superlattices are about 100 times above their theoretical limit. (C) 1995 American Institute of Physics.
Details
- Title: Subtitle
- THEORETICAL PERFORMANCE LIMITS OF 2.1-4.1 MU-M INAS/INGASB, HGCDTE, AND INGAASSB LASERS
- Creators
- M E FlatteC H GreinH EhrenreichR H MilesH Cruz
- Resource Type
- Journal article
- Publication Details
- Journal of applied physics, Vol.78(7), pp.4552-4559
- Publisher
- Amer Inst Physics
- DOI
- 10.1063/1.359798
- ISSN
- 0021-8979
- eISSN
- 1089-7550
- Number of pages
- 8
- Language
- English
- Date published
- 10/01/1995
- Academic Unit
- Electrical and Computer Engineering; Physics and Astronomy
- Record Identifier
- 9984429021302771
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