Tunable optical topological transition of Cherenkov radiation

Abstract Chasing efficient methods to generate and manipulate Cherenkov radiation (CR) is always the lofty target of many scientific researchers. In this work, by combining optical topological transition (OTT) graphene hyperbolic metamaterials (GHMs), we study properties clarify mechanisms OTT CR for first time. Specifically, indicate two representative examples reveal potential in manipulating further applications, which correspond ultrafast photothermal nonlocal individually. These results conclusions pave way photonic devices applications CR.