Space-Time Coding Metasurface For Multifunctional Holographic Imaging (Adv. Mater. Technol. 12/2024)

Abstract

Space-Time Coding Metasurfaces

In article number 2302164, Yan Shi and co-workers present a space–time coding metasurface to achieve multiple hologram imaging. Via the space-time coding scheme, the magnitude and phase of the higher-order harmonics can be accurately and rapidly controlled. The designed metasurface enables near-field holographic reconstruction of two different images on an imaging plane by means of ±1st order harmonics, and simultaneous realization of versatile functions including hologram imaging and beam steering or hologram imaging and orbital angular momentum wave generation.