All-metallic high-efficiency generalized Pancharatnam-Berry phase metasurface with chiral meta-atoms.

ABSTRACT: Metasurfaces based on the Pancharatnam-Berry (PB) phase have attracted significant attention in the domains of subwavelength optics and electromagnetics. Conventional theory predicts that the PB phase is exactly twice the rotation angle of the anisotropic meta-atoms. Differently, a recent advance has demonstrated that the generalized PB phase representing multiple times of the rotation angle could be obtained with high-fold rotational symmetry meta-atoms, but it suffers from the low cross-polarization conversion efficiency (the theoretical upper limit of 25%) that impedes its further applications, especially for meta-atoms with rotational symmetry ≥3. Here, we verify that the chiral meta-atoms with high-fold rotational symmetries could produce the generalized PB phase. Besides, the all-met

SUBMITTER: Cai J 

PROVIDER: S-EPMC11501248 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature