Title :
Broadband THz lasing from a photon-phonon quantum cascade structure emitting from 2.8 to 4.1 THz.
Author :
Scalari, Giacomo ; Amanti, Maria I. ; Terazzi, Romain ; Walther, Christoph ; Beck, Mattias ; Faist, Jérôme
Author_Institution :
Inst. of Quantum Electron., ETH Zurich, Zürich, Switzerland
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.
Keywords :
Frequency; Laser modes; Laser transitions; Optical scattering; Optical superlattices; Quantum cascade lasers; Quantum well lasers; Semiconductor lasers; Temperature; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010 Conference on
Conference_Location :
San Jose, CA, USA
Print_ISBN :
978-1-55752-890-2
Electronic_ISBN :
978-1-55752-890-2
