Microscopic density matrix model for optical gain of terahertz quantum cascade lasers : many-body, nonparabolicity, and resonant tunneling effects

• Main Authors: Liu, Tao, Lee, Kenneth E., Wang, Qi Jie
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/96317; http://hdl.handle.net/10220/10225
• Institution: Nanyang Technological University

Intersubband semiconductor-Bloch equations are investigated by incorporating many-body Coulomb interaction, nonparabolicity, and coherence of resonant tunneling transport in a quantitative way based on the density matrix theory. The calculations demonstrate the importance of these parameters on opti...