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Proceedings Paper

Injection schemes in THz quantum cascade lasers under operation
Author(s): M. Lindskog; D. O. Winge; A. Wacker
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Paper Abstract

The two main design schemes for Terahertz quantum cascade lasers, based on tunnelling and scattering injection, respectively, are theoretically compared. We apply our simulation package based on the non-equilibrium Green’s function technique. Our results provide a good description of the gain degradation with temperature. Thermal backfilling contributes to decrease of population inversion in both cases. However, the dropping inversion cannot account for the total reduction of gain.

Paper Details

Date Published: 24 September 2013
PDF: 10 pages
Proc. SPIE 8846, Terahertz Emitters, Receivers, and Applications IV, 884603 (24 September 2013); doi: 10.1117/12.2024030
Show Author Affiliations
M. Lindskog, Lund Univ. (Sweden)
D. O. Winge, Lund Univ. (Sweden)
A. Wacker, Lund Univ. (Sweden)

Published in SPIE Proceedings Vol. 8846:
Terahertz Emitters, Receivers, and Applications IV
Manijeh Razeghi; Alexei N. Baranov; John M. Zavada, Editor(s)

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