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We report the development of a quantum cascade laser at the longest wavelength to date, /spl lambda/=87.2 m (3.44 THz), that uses longitudinal-optical phonon scattering for electron depopulation. Operating in pulsed mode, lasing is obtained up to sixty-four Kelvin.
Lasers and Electro-Optics, 2003. CLEO '03. Conference on
Date of Conference: 6-6 June 2003