Topological Valley Hall Edge State Lasing

• Published in: Laser & photonics reviews Vol. 14; no. 7
• Main Authors: Zhong, Hua, Li, Yongdong, Song, Daohong, Kartashov, Yaroslav V., Zhang, Yiqi, Zhang, Yanpeng, Chen, Zhigang
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01.07.2020
• Subjects: Domain walls; edge state; Lasers; Lasing; Photon absorption; Robustness; Scattering; topological insulator; topological laser; Topology; valley hall effect; Valleys; Waveguides

Topological lasers based on topologically protected edge states exhibit unique features and enhanced robustness of operation in comparison with conventional lasers, even in the presence of disorder, edge deformation, or local defects. Here a new class of topological lasers arising from the valley Ha...