Title :
Modelling transport in quantum cascade lasers: A comparison between theory and experiment
Author :
Terazzi, R. ; Bismuto, A. ; Beck, M. ; Faist, J.
Author_Institution :
Quantum Optoelectron. Group, Swiss Fed. Inst. of Technol. Zurich, Zurich, Switzerland
Abstract :
In this paper, we present a model for quantum cascade laser (QCLs) based on the density matrix formalism that implement both coherent transport with sequential resonant tunneling and direct scattering by LO-phonons, interface roughness, alloy disorder and ionized dopants. We used this model to predict the light-current-voltage characteristic of a particular design at 4.7 mum.
Keywords :
density functional theory; interface roughness; laser theory; quantum cascade lasers; resonant tunnelling; semiconductor device models; LO-phonon scattering; alloy disorder; coherent transport; density matrix formalism; interface roughness; ionized dopants; light-current-voltage characteristics; quantum cascade lasers; sequential resonant tunneling; wavelength 4.7 mum; Electrical resistance measurement; Equations; Optical scattering; Particle scattering; Predictive models; Quantum cascade lasers; Quantum mechanics; Resonance light scattering; Resonant tunneling devices; Semiconductor process modeling;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5191521
