Planar Wide-Angle Imaging System with a Single-Layer SiC Metalens
Optical systems with wide field-of-view (FOV) imaging capabilities are crucial for applications ranging from biomedical diagnostics to remote sensing, yet conventional wide-angle optics face integration challenges in compact platforms. Here, we present the design and experimental demonstration of a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-07-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/13/1046 |
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| author | Yiyang Liu Qiangbo Zhang Changwei Zhang Mengguang Wang Zhenrong Zheng |
| author_facet | Yiyang Liu Qiangbo Zhang Changwei Zhang Mengguang Wang Zhenrong Zheng |
| author_sort | Yiyang Liu |
| collection | DOAJ |
| description | Optical systems with wide field-of-view (FOV) imaging capabilities are crucial for applications ranging from biomedical diagnostics to remote sensing, yet conventional wide-angle optics face integration challenges in compact platforms. Here, we present the design and experimental demonstration of a single-layer silicon carbide (SiC) metalens achieving a 90° total FOV, whose planar structure and small footprint address the challenges. This design is driven by a gradient-based numerical optimization strategy, Gradient-Optimized Phase Profile Shaping (GOPP), which optimizes the phase profile to accommodate the angle-dependent requirements. Combined with a front aperture, the GOPP-generated phase profile enables off-axis aberration control within a planar structure. Operating at 803 nm with a focal length of 1 mm (NA = 0.25), the fabricated metalens demonstrated focusing capabilities across the wide FOV, enabling effective wide-angle imaging. This work demonstrates the feasibility of using numerical optimization to realize single-layer metalens with challenging wide FOV capabilities, offering a promising route towards highly compact imagers for applications such as endoscopy and dermoscopy. |
| format | Article |
| id | doaj-art-ea2cd3e916a94bb0ba4964dee6e4e6ac |
| institution | DOAJ |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-ea2cd3e916a94bb0ba4964dee6e4e6ac2025-08-20T03:17:08ZengMDPI AGNanomaterials2079-49912025-07-011513104610.3390/nano15131046Planar Wide-Angle Imaging System with a Single-Layer SiC MetalensYiyang Liu0Qiangbo Zhang1Changwei Zhang2Mengguang Wang3Zhenrong Zheng4College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaOptical systems with wide field-of-view (FOV) imaging capabilities are crucial for applications ranging from biomedical diagnostics to remote sensing, yet conventional wide-angle optics face integration challenges in compact platforms. Here, we present the design and experimental demonstration of a single-layer silicon carbide (SiC) metalens achieving a 90° total FOV, whose planar structure and small footprint address the challenges. This design is driven by a gradient-based numerical optimization strategy, Gradient-Optimized Phase Profile Shaping (GOPP), which optimizes the phase profile to accommodate the angle-dependent requirements. Combined with a front aperture, the GOPP-generated phase profile enables off-axis aberration control within a planar structure. Operating at 803 nm with a focal length of 1 mm (NA = 0.25), the fabricated metalens demonstrated focusing capabilities across the wide FOV, enabling effective wide-angle imaging. This work demonstrates the feasibility of using numerical optimization to realize single-layer metalens with challenging wide FOV capabilities, offering a promising route towards highly compact imagers for applications such as endoscopy and dermoscopy.https://www.mdpi.com/2079-4991/15/13/1046metasurfacesmetalenswide field of viewimaging |
| spellingShingle | Yiyang Liu Qiangbo Zhang Changwei Zhang Mengguang Wang Zhenrong Zheng Planar Wide-Angle Imaging System with a Single-Layer SiC Metalens Nanomaterials metasurfaces metalens wide field of view imaging |
| title | Planar Wide-Angle Imaging System with a Single-Layer SiC Metalens |
| title_full | Planar Wide-Angle Imaging System with a Single-Layer SiC Metalens |
| title_fullStr | Planar Wide-Angle Imaging System with a Single-Layer SiC Metalens |
| title_full_unstemmed | Planar Wide-Angle Imaging System with a Single-Layer SiC Metalens |
| title_short | Planar Wide-Angle Imaging System with a Single-Layer SiC Metalens |
| title_sort | planar wide angle imaging system with a single layer sic metalens |
| topic | metasurfaces metalens wide field of view imaging |
| url | https://www.mdpi.com/2079-4991/15/13/1046 |
| work_keys_str_mv | AT yiyangliu planarwideangleimagingsystemwithasinglelayersicmetalens AT qiangbozhang planarwideangleimagingsystemwithasinglelayersicmetalens AT changweizhang planarwideangleimagingsystemwithasinglelayersicmetalens AT mengguangwang planarwideangleimagingsystemwithasinglelayersicmetalens AT zhenrongzheng planarwideangleimagingsystemwithasinglelayersicmetalens |