Evanescent-to-Propagating Wave Conversion Using Continuous High-Order Dielectric Metasurfaces

Abstract

Here, we design continuous higher-order dielectric metasurfaces to convert evanescent waves with large transverse wavenumbers into propagating ones. The dielectric nature of the designed metasurfaces and their operation in higher order modes reduce loss and significantly improve resolution in metasurface-based sub-wavelength imaging techniques.