Distributed feedback lasers having quantum-wire array as an active grating

Tae Geun Kim, Mutsuo Ogura

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


AlGaAs-GaAs V-groove quantum-wire (QWR) array lasers were fabricated by one-step grown metalorganic chemical vapor deposition (MOCVD) and characterized with the reference quantum-well (QW) lasers grown side-by-side in the same run. Room-temperature (RT) lasing at a considerably low threshold current of 65 mA was obtained in the wire direction while it was considerably delayed up to 230 mA in the distributed feedback (DFB) direction due to the occurrence of the large spontaneous emission. However, in the DFB direction, little trace of the stop band and the coincidence between the QWR gain (828 nm) and Bragg wavelengths (827 nm) were experimentally observed, which can be attributed to the gain-coupled DFB effects using a QWR active grating.

Original languageEnglish
Pages (from-to)4162-4165
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number6 B
Publication statusPublished - 2003 Jun
Externally publishedYes


  • Distributed feedback (DFB) lasers
  • Gain-coupling
  • Quantum-wires
  • Semiconductor laser

ASJC Scopus subject areas

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


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