Monolithic all-dielectric metasurface for simultaneous linear dichroism and wavefront manipulation

Abstract

The functionality of simultaneous dichroism and wavefront manipulation of orthogonally polarized electromagnetic waves has attracted considerable attention in the fields of polarization imaging, polarization sensing, vector generation, and optical communication. However, the conventional methodology requires the combination of many optical components, which limits the integration and reduces the efficiency of optical systems. Although multilayer metasurfaces have been proposed to increase efficiency, complicated fabrication hinders its practical applications. Herein, we employ the monolithic all-dielectric metasurface to simultaneously implement linear dichroism and wavefront manipulation based on the principle of local polarization-selective constructive or destructive interference. The average transmittance exceeding 87.88% and polarization extinction ratio up to 23 dB are achieved by the all-dielectric metasurface at the central wavelength of 532 nm. It is believed that this high-performance metasurface may provide a novel scheme for the complex optical field manipulation and replace the bulk optical elements in polarization imaging or other optical domains.