Title :
Single-mode surface-emitting terahertz quantum-cascade lasers operating up to ~ 150 K
Author :
Kumar, Sushil ; Williams, Benjamin S. ; Qin, Qi ; Lee, Alan W M ; Hu, Qing ; Reno, John L.
Author_Institution :
Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, 02139, USA
Abstract :
We report robust single-mode operation of surface-emitting distributed-feedback terahertz quantum-cascade lasers in metal-metal waveguides. Grating devices span a range of 0.35THz around 2.9THz, with 149K maximum pulsed operating temperature, and >6mW continuous-wave power at 5K.
Keywords :
Gratings; Laser beams; Laser modes; Optical surface waves; Optical waveguides; Power generation; Quantum cascade lasers; Surface emitting lasers; Surface waves; Waveguide lasers;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2007. QELS '07
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/QELS.2007.4431394
