Coulomb-correlated electron-hole plasma and gain in a quantum-wire laser of high uniformity

Hidefumi Akiyama, Loren N. Pfeiffer, Masahiro Yoshita, Aron Pinczuk, Peter B. Littlewood, Ken W. West, Manyalibo J. Matthews, James Wynn

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


A multi-quantum-wire laser operating in the one-dimensional (1D) ground state has been achieved in a very high uniformity structure that shows free-exciton emission with unprecedented narrow width and low lasing threshold. Under optical pumping, the spontaneous emission evolves from a sharp free exciton peak to a redshifted broad band. The lasing photon energy occurs about 5 meV below the free exciton. The observed shift excludes free excitons in lasing and our results show that Coulomb interactions in the ID electron-hole system shift the spontaneous emission and play significant roles in laser gain.

Original languageEnglish (US)
Article number041302
Pages (from-to)413021-413024
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number4
StatePublished - Jan 15 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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