Long-wavelength VCSELs with AlGaAsSb/AlAsSb Bragg mirrors lattice-matched on InP substrates

Guilhem Almuneau; Eric M. Hall; Shigeru Nakagawa; Jin K. Kim; Larry A. Coldren

doi:10.1117/12.384360

1 May 2000 Long-wavelength VCSELs with AlGaAsSb/AlAsSb Bragg mirrors lattice-matched on InP substrates

Guilhem Almuneau, Eric M. Hall, Shigeru Nakagawa, Jin K. Kim, Larry A. Coldren

Proceedings Volume 3946, Vertical-Cavity Surface-Emitting Lasers IV; (2000) https://doi.org/10.1117/12.384360
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

The characterization of 1.55 micrometer room temperature (RT) electrically pumped monolithic vertical cavity surface emitting lasers (VCSELs) on InP is reported. By combining high refractive index-contrast AlGaAsSb/AlAsSb distributed Bragg mirrors (DBRs) and Esaki-junction-based active region, these results demonstrate that VCSELs operating at 1.55 micrometer and employing a reasonable number of mirror periods can be grown in a single epitaxial step. Regarding our first results with the same type of structure, some improvements have been achieved on the threshold current density (approximately equals 1 kA/cm²), and on the voltage drop in the DBRs. We also present in this paper the thermal conductivity of the As- Sb materials measured on both bulk layers and DBR stacks. The main performance-limiting factor appears to be the combination between the low thermal conduction of the quaternary alloys lattice-matched to InP, and the high energy-band offset between the high- and the low-index materials.

Citation Download Citation

Guilhem Almuneau, Eric M. Hall, Shigeru Nakagawa, Jin K. Kim, and Larry A. Coldren "Long-wavelength VCSELs with AlGaAsSb/AlAsSb Bragg mirrors lattice-matched on InP substrates", Proc. SPIE 3946, Vertical-Cavity Surface-Emitting Lasers IV, (1 May 2000); https://doi.org/10.1117/12.384360

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