Session 4

[ICNN5-02] Absorption Enhancement of 2D Transition Metal Dichalcogenides on Silicon Metasurface by Degenerate Critical Coupling

*Dingwei Chen¹, Junichi Takahara^1,2 (1. Graduate School of Engineering, Osaka University, 2. Photonics Center, Graduate School of Engineering, Osaka University)

We realized a dielectric-based Si metasurface platform to accomplish strong light absorption of 2D Transition Metal Dichalcogenides. An absorption enhancement of WS₂ on metasurface is achieved by about 15.5 times based on degenerate critical coupling.