Microscopic analysis on optical gain of terahertz quantum cascade lasers

• Main Authors: Liu, Tao, Wang, Qi Jie, Lee, Kenneth E.
• Other Authors: School of Electrical and Electronic Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/97804; http://hdl.handle.net/10220/12184
• Institution: Nanyang Technological University

The effects of many-body coulomb interaction and non-parabolicity on optical gain of terahertz quantum cascade lasers are investigated based on the density-matrix model. The results show that many-body interaction and non-parabolicity effect all red-shift the gain spectrum and reduces the peak value...