Multiplexing near- and far-field functionalities with high-efficiency bi-channel metasurfaces
Abstract Propagating waves and surface waves are two distinct types of light-transporting modes, the free control of which are both highly desired in integration photonics. However, previously realized devices are bulky in sizes, inefficient, and/or can only achieve one type of light-manipulation fu...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-04-01
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| Series: | PhotoniX |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s43074-024-00128-5 |
| _version_ | 1827276982597976064 |
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| author | Changhong Dai Tong Liu Dongyi Wang Lei Zhou |
| author_facet | Changhong Dai Tong Liu Dongyi Wang Lei Zhou |
| author_sort | Changhong Dai |
| collection | DOAJ |
| description | Abstract Propagating waves and surface waves are two distinct types of light-transporting modes, the free control of which are both highly desired in integration photonics. However, previously realized devices are bulky in sizes, inefficient, and/or can only achieve one type of light-manipulation functionality with a single device. Here, we propose a generic approach to design bi-channel meta-devices, constructed by carefully selected meta-atoms possessing reflection phases of both structural-resonance and geometric origins, which can exhibit two distinct light-manipulation functionalities in near-field (NF) and far-field (FF) channels, respectively. After characterizing the scattering properties of basic meta-atoms and briefly stating the theoretical strategy, we design/fabricate three different meta-devices and experimentally characterize their bi-channel wave-control functionalities in the telecom regime. Our experiments show that the first two devices can multiplex the generations of NF and FF optical vortices with different topological charges, while the third one exhibits anomalous surface plasmon polariton focusing in the NF and hologram formation in the FF simultaneously. Our results expand the wave-control functionalities of metasurfaces to all wave-transporting channels, which may inspire many exciting applications in integration optics. |
| first_indexed | 2024-04-24T07:12:06Z |
| format | Article |
| id | doaj.art-a6a5e49fe95a4b188fcf6e9aebb9ff91 |
| institution | Directory Open Access Journal |
| issn | 2662-1991 |
| language | English |
| last_indexed | 2024-04-24T07:12:06Z |
| publishDate | 2024-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | PhotoniX |
| spelling | doaj.art-a6a5e49fe95a4b188fcf6e9aebb9ff912024-04-21T11:29:13ZengSpringerOpenPhotoniX2662-19912024-04-015111510.1186/s43074-024-00128-5Multiplexing near- and far-field functionalities with high-efficiency bi-channel metasurfacesChanghong Dai0Tong Liu1Dongyi Wang2Lei Zhou3State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education) and Department of Physics, Fudan UniversityDepartment of Physics, The Hong Kong University of Science and TechnologyDepartment of Physics, Hong Kong Baptist UniversityState Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education) and Department of Physics, Fudan UniversityAbstract Propagating waves and surface waves are two distinct types of light-transporting modes, the free control of which are both highly desired in integration photonics. However, previously realized devices are bulky in sizes, inefficient, and/or can only achieve one type of light-manipulation functionality with a single device. Here, we propose a generic approach to design bi-channel meta-devices, constructed by carefully selected meta-atoms possessing reflection phases of both structural-resonance and geometric origins, which can exhibit two distinct light-manipulation functionalities in near-field (NF) and far-field (FF) channels, respectively. After characterizing the scattering properties of basic meta-atoms and briefly stating the theoretical strategy, we design/fabricate three different meta-devices and experimentally characterize their bi-channel wave-control functionalities in the telecom regime. Our experiments show that the first two devices can multiplex the generations of NF and FF optical vortices with different topological charges, while the third one exhibits anomalous surface plasmon polariton focusing in the NF and hologram formation in the FF simultaneously. Our results expand the wave-control functionalities of metasurfaces to all wave-transporting channels, which may inspire many exciting applications in integration optics.https://doi.org/10.1186/s43074-024-00128-5Bi-channel metasurfacesNear-field (NF) channelsFar-field (FF) channelsIntegration photonicsStructural-resonanceGeometric phase |
| spellingShingle | Changhong Dai Tong Liu Dongyi Wang Lei Zhou Multiplexing near- and far-field functionalities with high-efficiency bi-channel metasurfaces PhotoniX Bi-channel metasurfaces Near-field (NF) channels Far-field (FF) channels Integration photonics Structural-resonance Geometric phase |
| title | Multiplexing near- and far-field functionalities with high-efficiency bi-channel metasurfaces |
| title_full | Multiplexing near- and far-field functionalities with high-efficiency bi-channel metasurfaces |
| title_fullStr | Multiplexing near- and far-field functionalities with high-efficiency bi-channel metasurfaces |
| title_full_unstemmed | Multiplexing near- and far-field functionalities with high-efficiency bi-channel metasurfaces |
| title_short | Multiplexing near- and far-field functionalities with high-efficiency bi-channel metasurfaces |
| title_sort | multiplexing near and far field functionalities with high efficiency bi channel metasurfaces |
| topic | Bi-channel metasurfaces Near-field (NF) channels Far-field (FF) channels Integration photonics Structural-resonance Geometric phase |
| url | https://doi.org/10.1186/s43074-024-00128-5 |
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