Coulomb-modulated gain spectra in current-injection T-shaped quantum-wire lasers

Makoto Okano, Masahiro Yoshita, Hidefumi Akiyama, Ping Huai, Tetsuo Ogawa, Loren N. Pfeiffer, Ken W. West

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We measured gain spectra of highly uniform current-injection T-shaped quantum wire lasers and investigated the physics of gain-spectral-shape modulation due to strong Coulomb interactions by comparing current-injection and optical-pumping measurements and additional calculations including screened Coulomb interaction. We found remarkable features for current injection: redshifts and long high- and low-energy tails of the gain peak. These characteristic current-injection features were ascribed to band-gap renormalization, state-filling, and carrier-carrier scattering inherent to charge-imbalanced electron-hole systems (

Original languageEnglish
Pages (from-to)20-23
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume8
Issue number1
DOIs
Publication statusPublished - 2011 Jan
Externally publishedYes

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quantum wires
injection
lasers
optical pumping
interactions
modulation
physics
energy
scattering

Keywords

  • Charge imbalance
  • Optical gain
  • Quantum wire
  • Semiconductor laser

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Coulomb-modulated gain spectra in current-injection T-shaped quantum-wire lasers. / Okano, Makoto; Yoshita, Masahiro; Akiyama, Hidefumi; Huai, Ping; Ogawa, Tetsuo; Pfeiffer, Loren N.; West, Ken W.

In: Physica Status Solidi (C) Current Topics in Solid State Physics, Vol. 8, No. 1, 01.2011, p. 20-23.

Research output: Contribution to journalArticle

Okano, Makoto ; Yoshita, Masahiro ; Akiyama, Hidefumi ; Huai, Ping ; Ogawa, Tetsuo ; Pfeiffer, Loren N. ; West, Ken W. / Coulomb-modulated gain spectra in current-injection T-shaped quantum-wire lasers. In: Physica Status Solidi (C) Current Topics in Solid State Physics. 2011 ; Vol. 8, No. 1. pp. 20-23.
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