Title :
Effects of resonant tunneling on intrinsic linewidth of quantum cascade lasers
Author :
Liu, Tiegen ; Wang, Q.J.
Author_Institution :
Div. of Microelectron., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
The quantum Langevin analysis for QCLs show that coupling strength and dephasing rate strongly affect the linewidth of THz QCLs in incoherent resonant-tunneling transport regime, but induce insignificant influence for mid-infrared QCLs due to strong coupling.
Keywords :
infrared sources; microwave photonics; quantum cascade lasers; resonant tunnelling devices; spectral line breadth; terahertz wave devices; THz QCL; coupling strength; dephasing rate; incoherent resonant-tunneling transport; intrinsic linewidth; mid-infrared QCL; quantum Langevin analysis; quantum cascade lasers; Couplings; Distributed feedback devices; Educational institutions; Equations; Mathematical model; Quantum cascade lasers; Resonant tunneling devices;
Conference_Titel :
Photonics Conference (IPC), 2012 IEEE
Conference_Location :
Burlingame, CA
Print_ISBN :
978-1-4577-0731-5
DOI :
10.1109/IPCon.2012.6358733
