Angle-insensitive Huygens’ metasurfaces of quadrupole modes

Abstract

Abstract Metasurfaces have attracted widespread interest owing to their ability to control light at the nanoscale level. However, the optical response of dipole mode-based metasurfaces is sensitive to changes in the resonator period and the light incidence angle; thus, the device performance typically degrades in practical applications owing to the presence of non-normal incident light. Here, we study cross-shaped Mie resonators based on quadrupole modes, whose optical response is almost independent of the variations in period and incidence angle. Based on this property of quadrupole modes, we propose a Huygens’ metasurface with stable transmissivity at different incident angles.