7 March 2006 High power superlattice quantum cascade laser emitting at 2.0 THz
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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.
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Chris Worrall, Jesse Alton, Mark Houghton, Stefano Barbieri, Carlo Sirtori, Harvey E. Beere, David Ritchie, "High power superlattice quantum cascade laser emitting at 2.0 THz", Proc. SPIE 6120, Terahertz and Gigahertz Electronics and Photonics V, 61200N (7 March 2006); doi: 10.1117/12.659718; https://doi.org/10.1117/12.659718
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