Low-threshold current-injection single-mode lasing in T-shaped GaAs/AlGaAs quantum wires

Shu Man Liu, Masahiro Yoshita, Makoto Okano, Toshiyuki Ihara, Hirotake Itoh, Hidefumi Akiyama, Loren Pfeiffer, Ken West, Kirk Baldwin

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A one-dimensional active region consisting of 20-period T-shaped GaAs/AlGaAs quantum wires of 14 x 6nm2 combined with a well-defined current-confinement scheme has been utilized to obtain a low-threshold-current high-efficiency laser. A threshold current as low as 0.27 mA, a single-mode cw output power of 0.13 mW at 1 mA injection current, and a differential quantum efficiency of 12% were achieved at 30 K using a quantum-wire laser with a 500-μm-long Fabry-Perot cavity coatedby high-reflectivity thin metals.

Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume46
Issue number12-16
DOIs
Publication statusPublished - 2007 Apr 13
Externally publishedYes

Fingerprint

Semiconductor quantum wires
Laser modes
quantum wires
threshold currents
aluminum gallium arsenides
lasing
injection
Lasers
Quantum efficiency
lasers
quantum efficiency
reflectance
cavities
output
Metals
metals

Keywords

  • Cleaved-edge overgrowth
  • Current injection
  • Low threshold
  • Quantum-wire laser
  • Single mode

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Low-threshold current-injection single-mode lasing in T-shaped GaAs/AlGaAs quantum wires. / Liu, Shu Man; Yoshita, Masahiro; Okano, Makoto; Ihara, Toshiyuki; Itoh, Hirotake; Akiyama, Hidefumi; Pfeiffer, Loren; West, Ken; Baldwin, Kirk.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 46, No. 12-16, 13.04.2007.

Research output: Contribution to journalArticle

Liu, Shu Man ; Yoshita, Masahiro ; Okano, Makoto ; Ihara, Toshiyuki ; Itoh, Hirotake ; Akiyama, Hidefumi ; Pfeiffer, Loren ; West, Ken ; Baldwin, Kirk. / Low-threshold current-injection single-mode lasing in T-shaped GaAs/AlGaAs quantum wires. In: Japanese Journal of Applied Physics, Part 2: Letters. 2007 ; Vol. 46, No. 12-16.
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AU - Pfeiffer, Loren

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