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Low-threshold operation of hemispherical microcavity single-quantum-well lasers at 4 K

  • F. M. Matinaga
  • , A. Karlsson
  • , S. MacHida
  • , Y. Yamamoto
  • , T. Suzuki
  • , Y. Kadota
  • , M. Ikeda

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate low-threshold lasing at 4 K in optically pumped hemispherical In0.2Ga0.8As single-quantum-well microcavities. The incident threshold pump power density is 11 kW/cm2 corresponding to an absorbed power density of about 320 W/cm2, and the measured spontaneous emission factor β is about 0.01.

Original languageEnglish
Pages (from-to)443-445
Number of pages3
JournalApplied Physics Letters
Volume62
Issue number5
DOIs
StatePublished - 1993
Externally publishedYes

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