[20p-E208-1~21] 3.12 Nanoscale optical science and near-field optics

△ [20p-E208-10] Controlling Emission of WS₂ Monolayer with a Spherical Silicon Mie Resonator

〇Tatsuki Hinamoto¹, Yan Joe Lee², Soren Raza³, Hiroshi Sugimoto¹, Minoru Fujii¹, Mark Brongersma² (1.Kobe Univ., 2.Stanford Univ., 3.Technical University of Denmark)

Keywords:Mie resonance, silicon, dielectric

High-index dielectric antennas support Mie resonances, which is capable of loss-less control of the electromagnetic fields at the nanoscale. In this presentation, we report directional emission of monolayer-WS₂ with spherical silicon Mie resonator. We theoretically and experimentally demonstrate the suppression of undesired losses due to the radiation of WS₂ into the high-index substrates by placing silicon nanospheres on WS₂. Engineering interferences between induced electric and magnetic dipoles of the nanosphere and the emitting dipole enables the cancellation of backward radiation and redirection of the emission upward.