High efficiency oxide confined vertical cavity surface emitting lasers

K. L. Lear, S. P. Kilcoyne, R. P. Schneider, K. D. Choquette, G. R. Hadley

Research output: Contribution to journalConference articlepeer-review


Structure based on aluminum-oxide layers have led to dramatic improvements in VCSELs such as power conversion efficiencies in excess of 50% and threshold currents below 10μA. The low index, insulating aluminum-oxide, formed by selective wet thermal oxidation of AlGaAs, serves as an effective index guide as well as a current injection aperture. This paper presents data on devices with either two aligned apertures above and below the active region or with a single effective aperture above the active region leading to slope efficiencies of up to 1W/A.

Original languageEnglish (US)
Pages (from-to)445-446
Number of pages2
JournalConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
StatePublished - 1995
Externally publishedYes
EventProceedings of the 1995 8th Annual Meeting of the IEEE Lasers and Electro-Optics Society. Part 1 (of 2) - San Francisco, CA, USA
Duration: Oct 30 1995Nov 2 1995

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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