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, Chris Worrall, Jesse Alton, Jesse Alton, Mark Houghton, Mark Houghton, Stefano Barbieri, Stefano Barbieri, Carlo Sirtori, Carlo Sirtori, Harvey E. Beere, Harvey E. Beere, David Ritchie, 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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