Wideband and high-efficiency spin-locked achromatic meta-device
Achromatic devices present unique capabilities in efficient manipulation of waves and have wide applications in imaging and communication systems. However, the research of achromatic devices is limited by the narrow bandwidth, low efficiency as well as large configurations. In this paper, we propose...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2022-11-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2022-0578 |
| _version_ | 1811171932055273472 |
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| author | Cui Xingshuo Liu Dan Wang Zanyang Wang Dengpan Wu Borui Wang Guangming Zheng Bin Cai Tong |
| author_facet | Cui Xingshuo Liu Dan Wang Zanyang Wang Dengpan Wu Borui Wang Guangming Zheng Bin Cai Tong |
| author_sort | Cui Xingshuo |
| collection | DOAJ |
| description | Achromatic devices present unique capabilities in efficient manipulation of waves and have wide applications in imaging and communication systems. However, the research of achromatic devices is limited by the narrow bandwidth, low efficiency as well as large configurations. In this paper, we propose a general strategy to design spin-locked achromatic metasurface with broadband and high efficiency properties in microwave region. A multi-resonant model is used to control the dispersion within a wide bandwidth by tuning its resonant intensity, resonance numbers as well as resonant frequency. As a proof of the concept, two achromatic meta-devices with ultra-thin profile at microwave frequency are experimentally investigated. The achromatic deflector can reflect the normal incident waves to the same angle within 9.5 to 11.5 GHz, while the other achromatic lens can focus the excitations at the same focal points. The experimentally working efficiency of the meta-devices fluctuates around 71–82% and 57–65% within the target working bandwidth, respectively. Moreover, our meta-devices can preserve the charity of the excitations. The scheme of this research shows great advances in the design of broadband and high-efficiency achromatic devices which can also be applied to other frequency ranges and inspires the realization of ultrabroadband and high-efficiency metadevices. |
| first_indexed | 2024-04-10T17:22:36Z |
| format | Article |
| id | doaj.art-4736aa2ca2de4278a3127c22bc8bc0a3 |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-04-10T17:22:36Z |
| publishDate | 2022-11-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-4736aa2ca2de4278a3127c22bc8bc0a32023-02-05T08:27:17ZengDe GruyterNanophotonics2192-86142022-11-0112111912710.1515/nanoph-2022-0578Wideband and high-efficiency spin-locked achromatic meta-deviceCui Xingshuo0Liu Dan1Wang Zanyang2Wang Dengpan3Wu Borui4Wang Guangming5Zheng Bin6Cai Tong7Air and Missile Defense College, Air Force Engineering University, Xi’an, 710051, ChinaState Key Laboratory of Modern Optical Instrumentation, The Electromagnetics Academy Zhejiang University, Hangzhou, 310027, ChinaAir and Missile Defense College, Air Force Engineering University, Xi’an, 710051, ChinaAir and Missile Defense College, Air Force Engineering University, Xi’an, 710051, ChinaAir and Missile Defense College, Air Force Engineering University, Xi’an, 710051, ChinaAir and Missile Defense College, Air Force Engineering University, Xi’an, 710051, ChinaState Key Laboratory of Modern Optical Instrumentation, The Electromagnetics Academy Zhejiang University, Hangzhou, 310027, ChinaAir and Missile Defense College, Air Force Engineering University, Xi’an, 710051, ChinaAchromatic devices present unique capabilities in efficient manipulation of waves and have wide applications in imaging and communication systems. However, the research of achromatic devices is limited by the narrow bandwidth, low efficiency as well as large configurations. In this paper, we propose a general strategy to design spin-locked achromatic metasurface with broadband and high efficiency properties in microwave region. A multi-resonant model is used to control the dispersion within a wide bandwidth by tuning its resonant intensity, resonance numbers as well as resonant frequency. As a proof of the concept, two achromatic meta-devices with ultra-thin profile at microwave frequency are experimentally investigated. The achromatic deflector can reflect the normal incident waves to the same angle within 9.5 to 11.5 GHz, while the other achromatic lens can focus the excitations at the same focal points. The experimentally working efficiency of the meta-devices fluctuates around 71–82% and 57–65% within the target working bandwidth, respectively. Moreover, our meta-devices can preserve the charity of the excitations. The scheme of this research shows great advances in the design of broadband and high-efficiency achromatic devices which can also be applied to other frequency ranges and inspires the realization of ultrabroadband and high-efficiency metadevices.https://doi.org/10.1515/nanoph-2022-0578achromatic meta-devicecircular polarizedhigh-efficiency and broadbandmetasurfacewavefront manipulation |
| spellingShingle | Cui Xingshuo Liu Dan Wang Zanyang Wang Dengpan Wu Borui Wang Guangming Zheng Bin Cai Tong Wideband and high-efficiency spin-locked achromatic meta-device Nanophotonics achromatic meta-device circular polarized high-efficiency and broadband metasurface wavefront manipulation |
| title | Wideband and high-efficiency spin-locked achromatic meta-device |
| title_full | Wideband and high-efficiency spin-locked achromatic meta-device |
| title_fullStr | Wideband and high-efficiency spin-locked achromatic meta-device |
| title_full_unstemmed | Wideband and high-efficiency spin-locked achromatic meta-device |
| title_short | Wideband and high-efficiency spin-locked achromatic meta-device |
| title_sort | wideband and high efficiency spin locked achromatic meta device |
| topic | achromatic meta-device circular polarized high-efficiency and broadband metasurface wavefront manipulation |
| url | https://doi.org/10.1515/nanoph-2022-0578 |
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