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Proceedings Paper

High power superlattice quantum cascade laser emitting at 2.0 THz
Author(s): Chris Worrall; Jesse Alton; Mark Houghton; Stefano Barbieri; Carlo Sirtori; Harvey E. Beere; David Ritchie
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Paper Abstract

We report the operation of a 2 THz quantum cascade laser based on a GaAs/Al0.1Ga0.9As heterostructure. Lasing action takes place between an isolated subband and the upper state of a 14 meV wide miniband. In pulsed mode, with a 3.16mm long device, we report a threshold current density of 115 A/cm2 at T = 4K, with a maximum measured peak power of 50 mW. The device shows lasing action in continuous wave up to 47K, with a maximum power in excess of 15 mW at T = 4K.

Paper Details

Date Published: 7 March 2006
PDF: 8 pages
Proc. SPIE 6120, Terahertz and Gigahertz Electronics and Photonics V, 61200N (7 March 2006); doi: 10.1117/12.659718
Show Author Affiliations
Chris Worrall, Univ. of Cambridge (United Kingdom)
Jesse Alton, Teraview Ltd. (United Kingdom)
Mark Houghton, Univ. of Cambridge (United Kingdom)
Teraview Ltd. (United Kingdom)
Stefano Barbieri, Univ. of Cambridge (United Kingdom)
Teraview Ltd. (United Kingdom)
Carlo Sirtori, Univ. Paris 7 (France)
Thales Research and Technology (France)
Harvey E. Beere, Univ. of Cambridge (United Kingdom)
David Ritchie, Univ. of Cambridge (United Kingdom)


Published in SPIE Proceedings Vol. 6120:
Terahertz and Gigahertz Electronics and Photonics V
R. Jennifer Hwu; Kurt J. Linden, Editor(s)

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