Role of interface roughness in the transport and lasing characteristics of quantum-cascade lasers

Jacob B. Khurgin, Yamac Dikmelik, Peter Q. Liu, Anthony J. Hoffman, Matthew D. Escarra, Kale J. Franz, Claire F. Gmachl

Research output: Contribution to journalArticle

76 Scopus citations

Abstract

A density-matrix based theory of transport and lasing in quantum-cascade lasers reveals that large disparity between luminescent linewidth and broadening of the tunneling transition changes the design guidelines to favor strong coupling between injector and upper laser level. This conclusion is supported by the experimental evidence.

Original languageEnglish (US)
Article number091101
JournalApplied Physics Letters
Volume94
Issue number9
DOIs
StatePublished - Mar 18 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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