How periodic are terahertz quantum cascade lasers?

T. Kubis, P. Vogl

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We apply a novel non-equilibrium Green's function method for open quantum devices to analyze quantum cascade lasers. We find the carrier distribution in typical resonant phonon THz-QCLs to develop a periodicity that differs from the geometric periodicity of the QCL. We propose a design improvement that thermalizes electrons at threshold bias and thereby pins the electron density to the QCL periodicity.

Original languageEnglish
Article number012063
JournalJournal of Physics: Conference Series
Volume193
DOIs
StatePublished - 2009
Externally publishedYes

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