Research On Manipulation Of Interactions Between Light And Two-dimensional Materials And Its Applications

The unprecedented optical properties of two-dimensional(2D)materials provide the possibility of breaking through the traditional bottleneck and developing new highperformance photonic devices.This thesis concentrates on enhancing and manipulating the interactions between light and 2D materials and shows several principle designs of 2D materials based photonic devices.A series of innovative applications are explored.The main work of the thesis is as follows:1.A hyrbrid metal-graphene plasmonic sensor that can work in both near-infrared and mid-infrared ranges simutaneously is proposed.The sensitivity and figure of merit(FOM)of the sensor is no less than what was previously reported.This hybrid structure will provide a reference for multi-functional high-performance sensors in the future.2.The concept of van der Waals heterostructures is transplanted to the field of plasmonics.A graphene-black phosphorus bilayer hybrid structure that can exhibit strong anisotropic plasmonic resonances in the context of geometric symmetry is proposed.This type of hybrid plasmonic architectures may open a door for high-performance plasmonic devices.3.By introducing extrinsic chirality through the oblique incidence and optical anisotropism of black phosphorus,a very strong optical activity is achieved in the unstructured black phosphorus in the monoatomic layer.This work is of great significance for new types of polarizing devices and for the spectroscopy of 2D materials.4.A type of guided-mode resonant structures based on atomically thin 2D materials are proposed.It is proved that leakage modes with extremely narrow line widths and remarkably Q-values of millions can be excited in the proposed structures.This type of structures can be widely applied to fields such as lasers,filters,and nonlinear optics.