arXiv Analytics

Sign in

arXiv:0711.2645 [cond-mat.mes-hall]AbstractReferencesReviewsResources

Temperature dependence of the gain profile for THz quantum cascade lasers

Rikard Nelander, Andreas Wacker

Published 2007-11-16, updated 2008-02-19Version 2

We study the rapid decrease of peak gain in resonant-phonon THz Quantum Cascade Lasers with increasing temperature. The effect of various microscopic scattering processes on the gain profile as a function of temperature is discussed. We argue that increased broadening, primarily due to increased impurity scattering, and not diminishing population inversion, is the main reason for the reduction of peak gain.

Comments: 4 pages, 4 figures
Journal: Appl. Phys. Lett. 92, 081102 (2008)
Categories: cond-mat.mes-hall
Subjects: 42.55.Px, 42.50.Md
Related articles: Most relevant | Search more
arXiv:1205.0408 [cond-mat.mes-hall] (Published 2012-05-02)
Wetting layer evolution and its temperature dependence during self assembly of InAs/GaAs quantum dots
arXiv:1503.02763 [cond-mat.mes-hall] (Published 2015-03-10)
Defect and Temperature Dependence of Tunneling in InAs/GaSb Heterojunctions
arXiv:1008.2566 [cond-mat.mes-hall] (Published 2010-08-16)
Temperature dependence of piezoresistance of composite Fermions with a valley degree of freedom

Links

Toolbox