Injection schemes in THz quantum cascade lasers under operation

M. Lindskog; D. O. Winge; A. Wacker

doi:10.1117/12.2024030

24 September 2013 Injection schemes in THz quantum cascade lasers under operation

M. Lindskog, D. O. Winge, A. Wacker

Proceedings Volume 8846, Terahertz Emitters, Receivers, and Applications IV; 884603 (2013) https://doi.org/10.1117/12.2024030
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

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.

Citation Download Citation

M. Lindskog, D. O. Winge, and A. Wacker "Injection schemes in THz quantum cascade lasers under operation", Proc. SPIE 8846, Terahertz Emitters, Receivers, and Applications IV, 884603 (24 September 2013); https://doi.org/10.1117/12.2024030

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