Carrier transport in THz quantum cascade lasers: Are Green's functions necessary?

A. Mátyás, T. Kubis, P. Lugli, C. Jirauschek

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We have applied two different simulation models for the stationary carrier transport and optical gain analysis in resonant phonon depopulation THz Quantum Cascade Lasers (QCLs), based on the semiclassical ensemble Monte Carlo (EMC) and fully quantum mechanical non-equilibrium Green's functions (NEGF) method, respectively. We find in the incoherent regime near and above the threshold current a qualitative and quantitative agreement of both methods. Therefore, we show that THz-QCLs can be successfully optimized utilizing the numerically efficient EMC method.

Original languageEnglish
Article number012026
JournalJournal of Physics: Conference Series
Volume193
DOIs
StatePublished - 2009

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