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All-metallic high-efficiency generalized Pancharatnam–Berry phase metasurface with chiral meta-atoms by Jixiang Cai; Fei Zhang; Mingbo Pu; Yan Chen; Yinghui Guo; Ting Xie; Xingdong Feng; Xiaoliang Ma; Xiong Li; Honglin Yu; Xiangang Luo is a Engineering article available to read on EtoBox.
What is All-metallic high-efficiency generalized Pancharatnam–Berry phase metasurface with chiral meta-atoms about?
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 metaatoms. Differently, a recent advance has demonstrated that the generalized PB phase representing multiple times of the rotation angle could be obtained with highfold 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-metallic configuration is utilized to design C2, C3, and C5 chiral catenary meta-atoms to improve their efficiency and bandwidth. The equivalent air waveguide with low loss between two adjacent meta-atoms is formed to analyse the higher performances of the all-metallic scheme for the realization of the generalized PB phase compared with the metal-insulator-metal and all-dielectric C3 meta-atoms. As a p
Who reads All-metallic high-efficiency generalized Pancharatnam–Berry phase metasurface with chiral meta-atoms?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Jixiang Cai; Fei Zhang; Mingbo Pu; Yan Chen; Yinghui Guo; Ting Xie; Xingdong Feng; Xiaoliang Ma; Xiong Li; Honglin Yu; Xiangang Luo
- Publisher
- Walter de Gruyter GmbH
- Published
- 2022
- Language
- EN
- Field
- Engineering (Physical Sciences)