Non-uniform lateral current distribution in quantum cascade lasers

Xue Huang, Yamac Dikmelik, Claire F. Gmachl

Research output: Contribution to journalArticle

Abstract

Non-uniform lateral current distribution in quantum cascade (QC) lasers is investigated, as a result of stimulated-optical-emissionassisted electron transport, the rate of which depends on the local photon density and is comparable to the longitudinal optical (LO) phonon scattering rate. A microscopic model based on rate equations is built to study the self-consistent process of interaction between local electrons and photons in QC lasers. The non-uniform distribution of lateral current and the corresponding spatial hole burning are simulated from this model. Moreover, multi-transverse-mode operation in QC lasers is also investigated.

Original languageEnglish (US)
Pages (from-to)6154-6164
Number of pages11
JournalOptics Express
Volume22
Issue number5
DOIs
StatePublished - Mar 10 2014

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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