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Conferences > CLEO > 2010 > CTuMM > CTuMM4

Broadband THz lasing from a photon-phonon quantum cascade structure emitting from 2.8 to 4.1 THz

Giacomo Scalari, Maria I. Amanti, Romain Terazzi, Christoph Walther, Mattias Beck, and Jérôme Faist

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Abstract

Laser emission over a broad range of frequencies from 2.8 to 4.1 THz is reported from a two-quantum well, photon-phonon cascade structure. Internal quantum efficiencies reaching 43 % are evaluated at 10 K. Maximum operating temperatures of 125 K are reported, with peak optical powers in excess of 30 mW from a double-metal ridge waveguide. The laser operates in both polarities, showing laser action in reverse bias up to a temperature of 90 K.

© 2010 Optical Society of America

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