Non-equilibrium quantum transport theory for quantum cascade lasers

Author

Kubis, T. ; Vogl, P.

Author_Institution

Tech. Univ. Munchen, Garching

fYear

2007

fDate

17-22 June 2007

Firstpage

1

Lastpage

1

Abstract

We have developed a fully quantum mechanical and self-consistent non-equilibrium Green´s function (NEGF) theory for quantum cascade lasers (QCL). This method takes into account acoustic, polar-optical phonon scattering, impurity, and interface roughness scattering within the self-consistent Born approximation. We present detailed results for the carrier transport and optical gain in a regime where multiple scattering, interference effects, carrier confinement and capture play an equally important role.

Keywords

Green´s function methods; interface roughness; laser beams; light interference; light scattering; quantum cascade lasers; quantum theory; QCL; carrier confinement; carrier transport; interface roughness scattering; interference effects; multiple scattering; nonequilibrium quantum transport theory; optical gain; polar-optical phonon scattering; quantum cascade lasers; quantum mechanics; self-consistent Born approximation; self-consistent nonequilibrium Green´s function theory; Acoustic scattering; Approximation methods; Green´s function methods; Impurities; Interference; Optical scattering; Particle scattering; Phonons; Quantum cascade lasers; Quantum mechanics;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on

Conference_Location

Munich

Print_ISBN

978-1-4244-0931-0

Electronic_ISBN

978-1-4244-0931-0

Type

conf

DOI

10.1109/CLEOE-IQEC.2007.4385913

Filename

4385913