Multifunctional metasurface coding for visible vortex beam generation, deflection and focusing.

ABSTRACT: Vortex beams, as beams carrying orbital angular momentum (OAM), exhibit unique donut-shaped intensity distributions and helical wavefronts. They are widely applied in fields such as optical communication, nanoparticle manipulation, and quantum information. Traditional vortex beam generation methods, such as those based on Pancharatnam-Berry phase design, can effectively generate vortex beams, but the conversion efficiency and design flexibility are limited by polarization states and incident angles. In addition, the generated and propagated vortex beams require separate metasurface for wavefront deflection and refocusing for practical applications. This work proposes a novel metasurface design approach based on resonant phase, where phase coverage of 2 π is achieved by varyin

SUBMITTER: Tian R 

PROVIDER: S-EPMC11953719 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature