Fig. 2: Principle and demonstration of the metasurface AM holography.
From: Angular momentum holography via a minimalist metasurface for optical nested encryption
a Top and side views of the meta-atom, in which the one can get the detailed parameters. b The principle of the non-interleaved spin-decoupled metasurface for AM holography, where each operation channel depends on arbitrary superimposing the two spin eigenstates. c The design strategy of the SOLH meta-hologram. d Schematic of the reconstructed SoPs on the entire PS with phase difference δR-δL ranging from 0 to 2π and amplitude AR and AL ranging from 0 to 1. e–h Numerical reconstruction of the four distinctive holographic images through a designed four-channel AM meta-hologram. The white arrows represent the extracted SoPs
