Temperature dependence of the gain profile for THz quantum cascade lasers

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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.
4 pages, 4 figures

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Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/162863

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0711.2645
 http://arxiv.org/abs/0711.2645
 Appl. Phys. Lett. 92, 081102 (2008)
 doi:10.1063/1.2884686

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arXiv