Title :
Microwatt-level terahertz sources based on intra-cavity difference-frequency generation in mid-infrared quantum cascade lasers
Author :
Belkin, Mikhail A. ; Capasso, Federico ; Xie, Feng ; Belyanin, Alexey ; Fischer, Milan ; Wittmann, Andreas ; Faist, Jereme
Author_Institution :
Harvard Sch. of Eng. & Appl. Sci., Harvard Univ., Cambridge, MA
Abstract :
We report 5 THz quantum cascade laser sources based on intra-cavity difference-frequency generation in dual-wavelength mid-infrared quantum cascade lasers. Our devices produce microwatt-level terahertz output at 80 K and approximately 200 nW output at 250 K.
Keywords :
infrared sources; laser cavity resonators; optical frequency conversion; quantum cascade lasers; submillimetre wave generation; dual-wavelength lasers; frequency 5 THz; intracavity difference-frequency generation; microwatt-level terahertz sources; midinfrared lasers; power 200 nW; quantum cascade lasers; temperature 250 K; temperature 80 K; Coherence; Nonlinear optics; Optical design; Optical mixing; Optical pumping; Optical waveguides; Pump lasers; Quantum cascade lasers; Semiconductor lasers; Temperature; (140.3070) Infrared and far-infrared lasers; (140.5960) Semiconductor lasers; (190.4223) Nonlinear wave mixing;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
