Combining Frequency-Selective Scattering and Specular Reflection Through Phase-Dispersion Tailoring of a Metasurface

Abstract

Manipulating the scattering of light in a frequency-selective manner, within a layer that is much thinner than the wavelength, is crucial for $e.g.$ antenna applications, or wireless communication. This study use a coding metasurface to realize frequency-selective scattering based on dispersion tailoring, achieving highly efficient mirror reflection at central frequencies and low diffusive scattering in side bands. A semianalytical method reveals the underlying physical mechanisms and guides metasurface design. These results could open the way to more diverse designs for light management, such as camouflaged or invisible emitters.