Independent Amplitude Control of Arbitrary Orthogonal States of Polarization via Dielectric Metasurfaces.

ABSTRACT: Exquisite polarization control using optical metasurfaces has attracted considerable attention thanks to their ability to manipulate multichannel independent wavefronts with subwavelength resolution. Here we present a new class of metasurface polarization optics, which enables imposition of two arbitrary and independent amplitude profiles on any pair of orthogonal states of polarization. The implementation method involves a polarization-dependent interference mechanism achieved by constructing a metasurface composed of an array of nanoscale birefringent waveplates. Based on this principle, we experimentally demonstrate chiral grayscale metasurface and chiral shadow rendering of structured light. These results illustrate a general approach interlinking amplitude profiles and orthogonal states of polarization and expands the scope of metasurface polarization shaping optics.

SUBMITTER: Fan Q 

PROVIDER: S-EPMC8143859 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature