Title :
Role of interface roughness in the transport and lasing characteristics of quantum-cascade lasers
Author :
Khurgin, Jacob B. ; Dikmelik, Yamac ; Liu, Peter Q. ; Hoffman, Anthony J. ; Escarra, Matthew D. ; Franz, Kale J. ; Gmachl, Claire F.
Author_Institution :
Dept. of Electr. & Comput. Eng., Johns Hopkins Univ., Baltimore, MD, USA
Abstract :
A density-matrix based theory of transport and lasing in quantum-cascade lasers reveals that large disparity between lasing linewidth and tunneling broadening changes the design guidelines to favor strong coupling between injector and upper laser level.
Keywords :
interface roughness; quantum cascade lasers; spectral line breadth; tunnelling; density-matrix based theory; interface roughness; lasing linewidth; quantum-cascade lasers; tunneling broadening; upper laser level; Laser theory; Laser transitions; Optical coupling; Optical design; Quantum cascade lasers; Quantum computing; Quantum mechanics; Resonance; Semiconductor lasers; Tunneling; (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
