Broadband spin-multiplexed single-celled metasurface holograms: a comprehensive comparison between different strategies.

ABSTRACT: Metasurface-generated holograms have emerged as a unique platform for arbitrarily shaping the reflected/transmitted wavefronts with the advantages of subwavelength large pixel sizes and multiple information channels. However, achieving multiple holographic images with large operation bandwidths is a rather complicated and arduous issue due to the dissimilar dispersion of all meta-atoms involved. In this work, we design and experimentally demonstrate single-celled metasurfaces to realize broadband and spin-multiplexed holograms, whose phase modulation is based only on the geometric phase supplied by a judiciously designed high-performance nanoscale half-wave plate operating in reflection. Four different multiplexing strategies are implemented, and the resulting holograms are systemically as

SUBMITTER: Im Sande S 

PROVIDER: S-EPMC11501439 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature