Title :
Low-threshold Terahertz quantum-cascade lasers with one-well injector operating up to 174 K
Author :
Kumar, Sushil ; Hu, Qing ; Reno, John L.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
We report operation of v ~ 2.7 THz quantum-cascade lasers (QCLs) up to 174 K. A new three-well active region, one-well injector scheme is utilized to lower the operating current densities. While the temperature performance of this design is comparable to that of the best published THz QCLs, lower operating current densities make this design a viable alternative.
Keywords :
current density; laser modes; quantum cascade lasers; submillimetre wave lasers; frequency 2.7 THz; one-well injector scheme; operating current density; quantum-cascade lasers; three-well active region; Current density; Frequency; Laboratories; Laser theory; Optical mixing; Optical receivers; Quantum cascade lasers; Quantum computing; Semiconductor lasers; Temperature; (140.3070) Infrared and far-infrared lasers; (140.5965) Semiconductor lasers, quantum cascade;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
