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Titel:

Terahertz quantum cascade lasers operating up to ~200 K with optimized oscillator strength and improved injection tunneling

Dokumenttyp:
Zeitschriftenaufsatz
Autor(en):
Fathololoumi, S.; Dupont, E.; Chan, C.W.I.; Wasilewski, Z.R.; Laframboise, S.R.; Ban, D.; Mátyás, A.; Jirauschek, C.; Hu, Q.; Liu, H.C.
Abstract:
A new temperature performance record of 199.5 K for terahertz quantum cascade lasers is achieved by optimizing the lasing transition oscillator strength of the resonant phonon based three-well design. The optimum oscillator strength of 0.58 was found to be larger than that of the previous record (0.41) by Kumar et al. [Appl. Phys. Lett. 94, 131105 (2009)]. The choice of tunneling barrier thicknesses was determined with a simplified density matrix model, which converged towards higher tunneling c...     »
Zeitschriftentitel:
Optics Express, Vol. 20, Issue 4, pp. 3866-3876 2012-02
Jahr:
2012
Jahr / Monat:
2012-02
Quartal:
1. Quartal
Monat:
Feb
Seitenangaben Beitrag:
3866 - 3876
Sprache:
en
Volltext / DOI:
doi:10.1364/OE.20.003866
WWW:
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-4-3866&origin=search
Verlag / Institution:
The Optical Society
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