Optical feedback by gain coupling in (In)GaAs/AlGaAs V-groove quantum-wire lasers

Kyoung Chan Kim, Y. Tsuji, Mutsuo Ogura, Tae Geun Kim

Research output: Contribution to journalArticle


Distributed optical feedback by gain coupling in V-groove quantum-wire (QWR) lasers is investigated by using (In) GaAs/AlGaAs active materials grown by metalorganic chemical vapor deposition (MOCVD). In order to avoid grating overgrowth during the fabrication of DFB structures, a newly developed constant MOCVD growth method is employed. Spectral gain anisotropy near the Bragg wavelength, resulting from optical feedback along the DFB direction, is clearly noted from InGaAs/AlGaAs QWR lasers at room temperature both theoretically and experimentally.

Original languageEnglish
Pages (from-to)638-641
Number of pages4
JournalJournal of the Korean Physical Society
Issue number3
Publication statusPublished - 2004 Sep 1



  • Distributed feedback
  • Gain-Coupling
  • Laser
  • Semiconductor quantum wires

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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