Charging dynamics in electrically pumped quantum wells

Ada Bäumner, Mackillo Kira, Stephan W Koch

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Injection pumping of quantum-well (QW) lasers can lead to charging of the active region due to the different electron and hole masses. To investigate the significance and physical consequences of this effect, the consequences of electrical pumping and the associated charging phenomena are investigated microscopically. The analysis reveals the necessity to include the extended barrier states energetically above the band edge in addition to the quantum-confined well states. It is shown that the barrier-state populations compensate the QW charging. The replenishing of stimulated carrier recombination under CW laser operation causes persistent charge oscillations at the plasma frequency.

Original languageEnglish (US)
Pages (from-to)1024-1032
Number of pages9
JournalIEEE Journal of Quantum Electronics
Volume45
Issue number8
DOIs
StatePublished - 2009
Externally publishedYes

Fingerprint

Quantum well lasers
Continuous wave lasers
Semiconductor quantum wells
charging
quantum wells
Plasmas
Electrons
pumping
electron mass
quantum well lasers
plasma frequencies
injection
oscillations
causes
lasers

Keywords

  • Charge carrier processes
  • Plasma oscillations
  • Quantum well lasers
  • Semiconductor device modeling

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

Cite this

Charging dynamics in electrically pumped quantum wells. / Bäumner, Ada; Kira, Mackillo; Koch, Stephan W.

In: IEEE Journal of Quantum Electronics, Vol. 45, No. 8, 2009, p. 1024-1032.

Research output: Contribution to journalArticle

Bäumner, Ada ; Kira, Mackillo ; Koch, Stephan W. / Charging dynamics in electrically pumped quantum wells. In: IEEE Journal of Quantum Electronics. 2009 ; Vol. 45, No. 8. pp. 1024-1032.
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