Generation of Independently Tailored Vector Vortex Beams Array via a Silicon Carbide Metasurface.

Abstract

Vector vortex beams (VVBs), characterized by spin-orbit angular momentum coupling, present significant promise for advancing photonic technologies. Nonetheless, the realization of a compact, integrated platform capable of generating VVB arrays with independently addressable optical states has remained an elusive challenge. Here, we demonstrate a monolithic dielectric metasurface based on a dual meta-atom architecture in silicon carbide that overcomes this fundamental barrier. This design provides full access to the spectrum of spatial vector states encoded on higher-order Poincaré spheres. We experimentally realize multimodal VVB arrays and showcase their utility in high-capacity holographic multiplexing and secure information encryption. Our work provides a compact and versatile platform for on-chip multidimensional structured light generation in the visible domain, with promising applications in quantum information science, optical manipulation, and high-density communications.