Nonequilibrium many-body theory of intersubband lasers

Inès Waldmueller, Weng W. Chow, Erik W. Young, Michael C. Wanke

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


We present a theory for intersubband lasers, based on the solution of the Maxwell-semiconductor Bloch equations for the laser field and active medium. The collision contributions are treated within the relaxation rate approximation, where the relaxation rates are determined by microscopic scattering calculations. The theory is suitable for investigating steady-state as well as dynamical laser characteristics. As examples of applications of the theory, we examine the thermal dependence of the laser output versus current density curve and the response to modulation of the injection current, for a three-subband laser. The influence of the nonparabolicity of the conduction band and Hartree-Fock manybody effects are investigated.

Original languageEnglish (US)
Article number01597416
Pages (from-to)292-301
Number of pages10
JournalIEEE Journal of Quantum Electronics
Issue number3
StatePublished - Mar 2006
Externally publishedYes


  • Intersubband semiconductor laser
  • Microscopic scattering
  • Nonequilibrium laser dynamics
  • Relaxation rate approximation

ASJC Scopus subject areas

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


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