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Electrically-pumped vertical-cavity lasers with AlxOy-GaAs reflectors

  • Michael H. MacDougal*
  • , Gye Mo Yang
  • , Aaron E. Bond
  • , Chao Kun Lin
  • , Denis Tishinin
  • , P. Daniel Dapkus
  • *Corresponding author for this work
  • IEEE
  • University of Southern California

Research output: Contribution to journalJournal articlepeer-review

Abstract

We have fabricated the first electrically-pumped vertical-cavity surface-emitting lasers (VCSEL's) which use oxide-based distributed Bragg reflectors (DBR's) on both sides of the gain region. They require a third the epitaxial growth time of VCSEL's with semiconductor DBR's. We obtain threshold currents as low as 160 μA in VCSEL's with an active area of 8 μm × 8 μm using a two quantum well InGaAs-GaAs active region. By etching away mirror pairs from the top reflector, quantum efficiencies as high as 61% are attained, while still maintaining a low threshold current of 290 μA.

Original languageEnglish
Pages (from-to)310-312
Number of pages3
JournalIEEE Photonics Technology Letters
Volume8
Issue number3
DOIs
StatePublished - 1996.03

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