Record low threshold current in microcavity surface-emitting laser

Takahiro Numai, Takeshi Kawakami, Takashi Yoshikawa, Mitsunori Sugimoto, Yoshimasa Sugimoto, Hiroyuki Yokoyama, Kenichi Kasahara, Kiyoshi Asakawa

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


We demonstrate a record low threshold current of 190 //A in a microcavity surface-emitting laser with a 5-jum-diameter airpost, in pulsed operation at room temperature with no heat sink. This low threshold current is attributed to high-quality epitaxial layers and a dry-etched smooth sidewall.

Original languageEnglish
Pages (from-to)L1533-L1534
JournalJapanese journal of applied physics
Issue number10 B
Publication statusPublished - 1993 Oct
Externally publishedYes


  • Microcavity
  • Surface-emitting laser
  • Threshold current

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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