Optical metagrating for one-shot polarization measurements

Abstract

We formulate a new conceptual approach for one-shot full Stokes polarization measurement with a single meta- grating, and develop novel design through advanced computational optimization of individual nano-resonator properties delivering robust operation even under strong fabrication inaccuracy. We fabricated the metasurface from amorphous silicon nanostructures deposited on glass, and experimentally confirmed accurate optical polarization reconstruction. We anticipate that our new concept will facilitate diverse applications such as optimal polarization state imaging tailored for computer vision or quantum state characterization.