Achromatic metalenses for full visible spectrum with extended group delay control via dispersion-matched layers
Abstract Achieving achromaticity across the visible light spectrum is crucial for metalenses in imaging systems. Single-layer metalenses struggle with weak focusing power or small aperture sizes due to inadequate group delay control. Multilayer metalenses offer some improvement but come with increas...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-11-01
|
| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-53701-8 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846171832894357504 |
|---|---|
| author | Shengyuan Chang Lidan Zhang Yao Duan Md Tarek Rahman Abrar Islam Xingjie Ni |
| author_facet | Shengyuan Chang Lidan Zhang Yao Duan Md Tarek Rahman Abrar Islam Xingjie Ni |
| author_sort | Shengyuan Chang |
| collection | DOAJ |
| description | Abstract Achieving achromaticity across the visible light spectrum is crucial for metalenses in imaging systems. Single-layer metalenses struggle with weak focusing power or small aperture sizes due to inadequate group delay control. Multilayer metalenses offer some improvement but come with increased design and fabrication complexity. Here, we demonstrate a strategy using meta-atoms with material layers engineered for matching dispersion, allowing large and fine adjustments of group delay. Our design substantially broadens the group delay range, allowing us to experimentally demonstrate several polarization-independent metalenses operating across the entire visible spectrum (400-700 nm). We design, fabricate, and characterize achromatic metalenses with aperture diameters of 16 μm, 66 μm, 200 μm, and 400 μm, and numerical apertures of 0.27, 0.11, 0.04, and 0.02, respectively. Among them, the 400-μm diameter, 0.02-numerical-aperture metalens is used to demonstrate full-color imaging capabilities. Our results exhibit diffraction-limited performance, high efficiency, and accurate full-color image reproduction. |
| format | Article |
| id | doaj-art-9ece0bb8cc9149eeb78ecb805867b6f3 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-9ece0bb8cc9149eeb78ecb805867b6f32024-11-10T12:31:52ZengNature PortfolioNature Communications2041-17232024-11-011511910.1038/s41467-024-53701-8Achromatic metalenses for full visible spectrum with extended group delay control via dispersion-matched layersShengyuan Chang0Lidan Zhang1Yao Duan2Md Tarek Rahman3Abrar Islam4Xingjie Ni5Department of Electrical Engineering, The Pennsylvania State UniversityDepartment of Electrical Engineering, The Pennsylvania State UniversityDepartment of Electrical Engineering, The Pennsylvania State UniversityDepartment of Electrical Engineering, The Pennsylvania State UniversityDepartment of Electrical Engineering, The Pennsylvania State UniversityDepartment of Electrical Engineering, The Pennsylvania State UniversityAbstract Achieving achromaticity across the visible light spectrum is crucial for metalenses in imaging systems. Single-layer metalenses struggle with weak focusing power or small aperture sizes due to inadequate group delay control. Multilayer metalenses offer some improvement but come with increased design and fabrication complexity. Here, we demonstrate a strategy using meta-atoms with material layers engineered for matching dispersion, allowing large and fine adjustments of group delay. Our design substantially broadens the group delay range, allowing us to experimentally demonstrate several polarization-independent metalenses operating across the entire visible spectrum (400-700 nm). We design, fabricate, and characterize achromatic metalenses with aperture diameters of 16 μm, 66 μm, 200 μm, and 400 μm, and numerical apertures of 0.27, 0.11, 0.04, and 0.02, respectively. Among them, the 400-μm diameter, 0.02-numerical-aperture metalens is used to demonstrate full-color imaging capabilities. Our results exhibit diffraction-limited performance, high efficiency, and accurate full-color image reproduction.https://doi.org/10.1038/s41467-024-53701-8 |
| spellingShingle | Shengyuan Chang Lidan Zhang Yao Duan Md Tarek Rahman Abrar Islam Xingjie Ni Achromatic metalenses for full visible spectrum with extended group delay control via dispersion-matched layers Nature Communications |
| title | Achromatic metalenses for full visible spectrum with extended group delay control via dispersion-matched layers |
| title_full | Achromatic metalenses for full visible spectrum with extended group delay control via dispersion-matched layers |
| title_fullStr | Achromatic metalenses for full visible spectrum with extended group delay control via dispersion-matched layers |
| title_full_unstemmed | Achromatic metalenses for full visible spectrum with extended group delay control via dispersion-matched layers |
| title_short | Achromatic metalenses for full visible spectrum with extended group delay control via dispersion-matched layers |
| title_sort | achromatic metalenses for full visible spectrum with extended group delay control via dispersion matched layers |
| url | https://doi.org/10.1038/s41467-024-53701-8 |
| work_keys_str_mv | AT shengyuanchang achromaticmetalensesforfullvisiblespectrumwithextendedgroupdelaycontrolviadispersionmatchedlayers AT lidanzhang achromaticmetalensesforfullvisiblespectrumwithextendedgroupdelaycontrolviadispersionmatchedlayers AT yaoduan achromaticmetalensesforfullvisiblespectrumwithextendedgroupdelaycontrolviadispersionmatchedlayers AT mdtarekrahman achromaticmetalensesforfullvisiblespectrumwithextendedgroupdelaycontrolviadispersionmatchedlayers AT abrarislam achromaticmetalensesforfullvisiblespectrumwithextendedgroupdelaycontrolviadispersionmatchedlayers AT xingjieni achromaticmetalensesforfullvisiblespectrumwithextendedgroupdelaycontrolviadispersionmatchedlayers |