Electrically pumped topological laser with valley edge modes

• Main Authors: Zeng, Yongquan, Chattopadhyay, Udvas, Zhu, Bofeng, Qiang, Bo, Li, Jinghao, Jin, Yuhao, Li, Lianhe, Davies, Alexander Giles, Linfield, Edmund Harold, Zhang, Baile, Chong, Yidong, Wang, Qi Jie
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Electrical and electronic engineering; Laser Method; Topology
• Online Access: https://hdl.handle.net/10356/138755
• Institution: Nanyang Technological University

Quantum cascade lasers are compact, electrically pumped light sources in the technologically important mid-infrared and terahertz region of the electromagnetic spectrum1,2. Recently, the concept of topology3 has been expanded from condensed matter physics into photonics4, giving rise to a new type o...