Ultranarrow-linewidth wavelength-vortex metasurface holography.

ABSTRACT: Metasurface holograms harness multiple degrees of freedom of light to enhance information channel capacity. Traditionally, wavelength multiplexing holography with high-capacity information channel was only achievable through 3D volume holograms using Bragg diffraction. Here, we demonstrate ultranarrow-linewidth wavelength-vortex multiplexing holography in metasurface holograms. By applying elementary dispersion engineering, we develop a sparse k-vector-filtering aperture array in momentum space, enabling sharp wavelength selectivity combined with orbital angular momentum selectivity. Further leveraging transformer neural networks for the design of phase-only holograms, we showcase the reconstruction of up to 118 independent images from a single hologram, achieving a simulated ultran

SUBMITTER: Meng W 

PROVIDER: S-EPMC11927637 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature