Effects of resonant tunneling on intrinsic linewidth of quantum cascade lasers

• Main Authors: Liu, T., Wang, Q. J.
• Other Authors: School of Electrical and Electronic Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/98660; http://hdl.handle.net/10220/12079
• Institution: Nanyang Technological University

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.