MBE growth of (GaAs)m/(AlAs)n short-period superlattices and their application in fabricating visible lasers

Naresh Chand; Niloy K. Dutta; John Lopata; Robert Hull; Michael Geva

doi:10.1117/12.137654

2 September 1992 MBE growth of (GaAs)_m/(AlAs)_n short-period superlattices and their application in fabricating visible lasers

Naresh Chand, Niloy K. Dutta, John Lopata, Robert Hull, Michael Geva

Author Affiliations +

Proceedings Volume 1676, Advanced Semiconductor Epitaxial Growth Processes and Lateral and Vertical Fabrication; (1992) https://doi.org/10.1117/12.137654
Event: Semiconductors '92, 1992, Somerset, NJ, United States

Abstract

We report on the fabrication and performance characteristics of (GaAs)₃/(AlAs)₁ short-period superlattices (SPSs) quantum well lasers emitting at 737 nm. The SPSs consists of eight periods of 3 and 1 ML of GaAs and AlAs, respectively. The (GaAs)_m/(AlAs)_n SPSs have many advantages over their equivalent AlGaAs alloy counterparts. The broad area threshold current density, J_th, for 500 micrometers long lasers is 510 A cm^-2. The 500 micrometers -long ridge waveguide lasers have a threshold current of 48 mA with a characteristic temperature of 68 K in the temperature range 19 to 60 degree(s)C. The external differential quantum efficiency near threshold is 0.58 mW/mA/facet. The devices lase in a single mode with spectral width within the resolution limit of the spectrometer.

Citation Download Citation

Naresh Chand, Niloy K. Dutta, John Lopata, Robert Hull, and Michael Geva "MBE growth of (GaAs)_m/(AlAs)_n short-period superlattices and their application in fabricating visible lasers", Proc. SPIE 1676, Advanced Semiconductor Epitaxial Growth Processes and Lateral and Vertical Fabrication, (2 September 1992); https://doi.org/10.1117/12.137654

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