Broadband metasurfaces with simultaneous control of phase and amplitude

Abstract

By combining the freedom of both the structural design and the orientation of split ring resonator antennas, we demonstrate terahertz metasurfaces that are capable of controlling both the phase and amplitude profiles over a very broad bandwidth. As an example, we show that the phase-amplitude metasurfaces can be engineered to control the diffraction orders arbitrarily.

Keywords: Metasurfaces; diffraction; metamaterials; refraction; terahertz.