Fig. 4: Simulation and experimental results of the four-channel discontinuous OAM holography.
From: Discontinuous orbital angular momentum metasurface holography

a Schematic illustration of the four-channel discontinuous OAM holography. Rotating the incident discontinuous OAM beam enables dynamic switching of the four output images. b Normalized SNR of decoded holographic images under different rotation angles of the incident beam. c Simulated and d experimental results of four-channel holography.