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Lasing characteristics of high-performance narrow-stripe InGaAs-GaAs quantum-well lasers confined by AlAs native oxide

  • Yong Cheng*
  • , P. Daniel Dapkus
  • , Michael H. MacDougal
  • , Gye Mo Yang
  • *Corresponding author for this work
  • University of Southern California
  • IEEE

Research output: Contribution to journalJournal articlepeer-review

Abstract

High-performance narrow-stripe InGaAs-GaAs quantum-well lasers with integral buried AlAs native-oxide layers have been fabricated. AlAs native-oxide layers above and below waveguide region were employed for current and optical confinement to form narrow-stripe lasers. A low temperature (400 °C) anisotropic wet oxidation technique was used to selectively oxidize AlAs layers in the epitaxial structure. The devices demonstrated continuous wave threshold currents of 3.5 mA, external quantum efficiencies of 82%, and a characteristic temperature of 133 K for 1.8 μm-wide aperture, 400 μm-long devices. Threshold currents of 1.7 mA were obtained by applying HR/HR coatings.

Original languageEnglish
Pages (from-to)176-178
Number of pages3
JournalIEEE Photonics Technology Letters
Volume8
Issue number2
DOIs
StatePublished - 1996.02

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