High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces
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...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2022-03-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2022-0006 |
| _version_ | 1797947881513025536 |
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| author | Pan Weikang Wang Zhuo Chen Yizhen Li Shiqing Zheng Xiaoying Tian Xinzhang Chen Cong Xu Nianxi He Qiong Zhou Lei Sun Shulin |
| author_facet | Pan Weikang Wang Zhuo Chen Yizhen Li Shiqing Zheng Xiaoying Tian Xinzhang Chen Cong Xu Nianxi He Qiong Zhou Lei Sun Shulin |
| author_sort | Pan Weikang |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-10T21:34:43Z |
| format | Article |
| id | doaj.art-47b76ac856614d7a8075f69829672678 |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-04-10T21:34:43Z |
| publishDate | 2022-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-47b76ac856614d7a8075f698296726782023-01-19T12:47:00ZengDe GruyterNanophotonics2192-86142022-03-011192025203610.1515/nanoph-2022-0006High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfacesPan Weikang0Wang Zhuo1Chen Yizhen2Li Shiqing3Zheng Xiaoying4Tian Xinzhang5Chen Cong6Xu Nianxi7He Qiong8Zhou Lei9Sun Shulin10Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, Shanghai200433, ChinaState Key Laboratory of Surface Physics and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Fudan University, Shanghai200433, ChinaShanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, Shanghai200433, ChinaShanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, Shanghai200433, ChinaState Key Laboratory of Surface Physics and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Fudan University, Shanghai200433, ChinaShanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, Shanghai200433, ChinaSchool of Electronic Information, Wuhan University, Wuhan430072, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin130033, ChinaState Key Laboratory of Surface Physics and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Fudan University, Shanghai200433, ChinaState Key Laboratory of Surface Physics and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Fudan University, Shanghai200433, ChinaShanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, Shanghai200433, ChinaAchieving 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.https://doi.org/10.1515/nanoph-2022-0006far-field wavefrontmetasurfacepancharatnam–berry phasepropagation wavesurface wave |
| spellingShingle | Pan Weikang Wang Zhuo Chen Yizhen Li Shiqing Zheng Xiaoying Tian Xinzhang Chen Cong Xu Nianxi He Qiong Zhou Lei Sun Shulin High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces Nanophotonics far-field wavefront metasurface pancharatnam–berry phase propagation wave surface wave |
| title | High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces |
| title_full | High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces |
| title_fullStr | High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces |
| title_full_unstemmed | High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces |
| title_short | High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces |
| title_sort | high efficiency generation of far field spin polarized wavefronts via designer surface wave metasurfaces |
| topic | far-field wavefront metasurface pancharatnam–berry phase propagation wave surface wave |
| url | https://doi.org/10.1515/nanoph-2022-0006 |
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