Title :
Super-linear performance of dual-upper-state quantum-cascade lasers
Author :
Fujita, Kazuue ; Yamanishi, Masamichi ; Furuta, Shinichi ; Sugiyama, Atsushi ; Dougakiuchi, Tatsuo ; Edamura, Tadataka
Author_Institution :
Central Res. Labs., Hamamatsu Photonics K.K., Hamamatsu, Japan
Abstract :
Intrinsic super-linear performance of quantum cascade lasers with dual-upper-state is reported. The super-linear slope efficiency, which is enhanced with increasing temperature, is ascribed to the absorption quenching due to the decrease of electron populations in injectors.
Keywords :
infrared spectra; laser beams; quantum cascade lasers; radiation quenching; absorption quenching; dual-upper-state quantum-cascade lasers; electron injectors; electron populations; super-linear performance; super-linear slope efficiency; Laser modes; Laser theory; Measurement by laser beam; Quantum cascade lasers; Temperature; Temperature measurement;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
