Title :
Engineering the intersubband lifetime with interface roughness in Quantum Cascade lasers
Author :
Chiu, YenTing ; Dikmelik, Yamac ; Zhang, Qiang ; Khurgin, Jacob B. ; Gmachl, Claire F.
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., Princeton, NJ, USA
Abstract :
Due to interface roughness scattering, the lower laser state depopulation lifetime of Quantum Cascade lasers can be significantly reduced (e.g. from 0.25 to 0.09 picosecond theoretically) by placing additional interfaces strategically in the active region.
Keywords :
high-speed optical techniques; interface roughness; light scattering; quantum cascade lasers; active region; interface roughness scattering; intersubband lifetime; lower laser state depopulation lifetime; quantum cascade lasers; time 0.25 ps to 0.09 ps; Gas lasers; Laser theory; Laser transitions; Quantum cascade lasers; Scattering; Temperature;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
