Title :
High-power terahertz quantum-cascade lasers
Author :
Williams, B.S. ; Kumar, S. ; Hu, Q. ; Reno, J.L.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
Demonstration of quantum-cascade lasers at ∼4.4 THz (λ∼68 μm), which are measured to emit 248 mW peak power in pulsed mode, and 138 mW continuous-wave power at heatsink temperatures of 10 K, is reported. These lasers are based on a resonant-phonon depopulation scheme, and use a semi-insulating surface-plasmon waveguide.
Keywords :
quantum cascade lasers; submillimetre wave lasers; 10 K; 138 mW; 248 mW; 4.4 THz; continuous-wave power; high-power laser; pulsed mode power; quantum-cascade lasers; resonant-phonon depopulation; semi-insulating waveguide; surface-plasmon waveguide; terahertz laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20063921
