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Article Abstract
Orbital angular momentum (OAM) multiplexing holography offers unprecedented capacity for optical encryption. We propose a petal OAM holographic scheme for two-dimensional optical encryption by constructing superposition modes of ± OAM states with phase , uniquely encoding dual degrees of freedom (DoFs, and ) as independent multiplexing channels. The strong mode selectivity enables multi-image integration into a single hologram, doubling information capacity while enhancing security. Simulations and experiments validate petal OAM's preservation, selective addressing, and multiplexing capability. A 2D high-security encryption platform is experimentally demonstrated, providing an anti-counterfeiting solution with multi-parameter optical encryption. This work pioneers OAM DoF synergy for next-generation holographic security systems.
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