High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces
Abstract: Achieving a pre-designed scattering pattern from an ultra-compact platform is highly desired for on-chip integration optics, but conventional techniques suffer from the limitations of bulky size, wavelength-scale modulation and low efficiency. Here, we propose a new strategy to efficiently generate arbitrary spin-polarized scattering far-field patterns from surface-wave (SW) excitations on a designer Pancharatnam–Berry (PB) metasurface. We find that a PB meta-atom serves as a subwavelength scatter to decouple impinging SW to a spin-polarized propagating wave (PW) with tailored amplitude and phase, and thus interference among PWs generated by scatterings at different PB meta-atoms can generate a tailored far-field pattern. As a proof of concept, we design and fabricate a series of PB metasurfaces in the microwave regime and experimentally demonstrate that they can generate desired radiation patterns within a broad frequency band, including unidirectional radiation, line/point focusing, vortex beam and hologram. These findings may stimulate important applications in on-chip integrated photonics.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces ; volume:11 ; number:9 ; year:2022 ; pages:2025-2036 ; extent:12
Nanophotonics ; 11, Heft 9 (2022), 2025-2036 (gesamt 12)
- Creator
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Pan, Weikang
Wang, Zhuo
Chen, Yizhen
Li, Shiqing
Zheng, Xiaoying
Tian, Xinzhang
Chen, Cong
Xu, Nianxi
He, Qiong
Zhou, Lei
Sun, Shulin
- DOI
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10.1515/nanoph-2022-0006
- URN
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urn:nbn:de:101:1-2022120813310897429862
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:39 AM CEST
Data provider
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Associated
- Pan, Weikang
- Wang, Zhuo
- Chen, Yizhen
- Li, Shiqing
- Zheng, Xiaoying
- Tian, Xinzhang
- Chen, Cong
- Xu, Nianxi
- He, Qiong
- Zhou, Lei
- Sun, Shulin
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