Nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging
Abstract Combining bright-field and edge-enhanced imaging affords an effective avenue for extracting complex morphological information from objects, which is particularly beneficial for biological imaging. Multiplexing meta-lenses present promising candidates for achieving this functionality. Howeve...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Publishing Group
2025-01-01
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| Series: | Light: Science & Applications |
| Online Access: | https://doi.org/10.1038/s41377-024-01728-3 |
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| _version_ | 1832571315933937664 |
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| author | Jin Yao Yubin Fan Yunhui Gao Rong Lin Zhihui Wang Mu Ku Chen Shumin Xiao Din Ping Tsai |
| author_facet | Jin Yao Yubin Fan Yunhui Gao Rong Lin Zhihui Wang Mu Ku Chen Shumin Xiao Din Ping Tsai |
| author_sort | Jin Yao |
| collection | DOAJ |
| description | Abstract Combining bright-field and edge-enhanced imaging affords an effective avenue for extracting complex morphological information from objects, which is particularly beneficial for biological imaging. Multiplexing meta-lenses present promising candidates for achieving this functionality. However, current multiplexing meta-lenses lack spectral modulation, and crosstalk between different wavelengths hampers the imaging quality, especially for biological samples requiring precise wavelength specificity. Here, we experimentally demonstrate the nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging. Quasi-bound states in the continuum (q-BICs) are excited to provide a high quality factor of 90 and incident-angle dependence. The generalized Kerker condition, driven by Fano-like interactions between q-BIC and in-plane Mie resonances, breaks the radiation symmetry, resulting in a transmission peak with a geometric phase for polarization-converted light, while unconverted light exhibits a transmission dip without a geometric phase. Enhanced polarization conversion efficiency of 65% is achieved, accompanied by a minimal unconverted value, surpassing the theoretical limit of traditional thin nonlocal metasurfaces. Leveraging these effects, the output polarization-converted state exhibits an efficient wavelength-selective focusing phase profile. The unconverted counterpart serves as an effective spatial frequency filter based on incident-angular dispersion, passing high-frequency edge details. Bright-field imaging and edge detection are thus presented under two output spin states. This work provides a versatile framework for nonlocal metasurfaces, boosting biomedical imaging and sensing applications. |
| format | Article |
| id | doaj-art-9142eb7d531e4463bb85baeb46a9ca95 |
| institution | Kabale University |
| issn | 2047-7538 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Publishing Group |
| record_format | Article |
| series | Light: Science & Applications |
| spelling | doaj-art-9142eb7d531e4463bb85baeb46a9ca952025-02-02T12:43:13ZengNature Publishing GroupLight: Science & Applications2047-75382025-01-011411810.1038/s41377-024-01728-3Nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imagingJin Yao0Yubin Fan1Yunhui Gao2Rong Lin3Zhihui Wang4Mu Ku Chen5Shumin Xiao6Din Ping Tsai7Department of Electrical Engineering, City University of Hong KongDepartment of Electrical Engineering, City University of Hong KongDepartment of Electrical Engineering, City University of Hong KongDepartment of Electrical Engineering, City University of Hong KongDepartment of Electrical Engineering, City University of Hong KongDepartment of Electrical Engineering, City University of Hong KongState Key Laboratory on Tunable Laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of TechnologyDepartment of Electrical Engineering, City University of Hong KongAbstract Combining bright-field and edge-enhanced imaging affords an effective avenue for extracting complex morphological information from objects, which is particularly beneficial for biological imaging. Multiplexing meta-lenses present promising candidates for achieving this functionality. However, current multiplexing meta-lenses lack spectral modulation, and crosstalk between different wavelengths hampers the imaging quality, especially for biological samples requiring precise wavelength specificity. Here, we experimentally demonstrate the nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging. Quasi-bound states in the continuum (q-BICs) are excited to provide a high quality factor of 90 and incident-angle dependence. The generalized Kerker condition, driven by Fano-like interactions between q-BIC and in-plane Mie resonances, breaks the radiation symmetry, resulting in a transmission peak with a geometric phase for polarization-converted light, while unconverted light exhibits a transmission dip without a geometric phase. Enhanced polarization conversion efficiency of 65% is achieved, accompanied by a minimal unconverted value, surpassing the theoretical limit of traditional thin nonlocal metasurfaces. Leveraging these effects, the output polarization-converted state exhibits an efficient wavelength-selective focusing phase profile. The unconverted counterpart serves as an effective spatial frequency filter based on incident-angular dispersion, passing high-frequency edge details. Bright-field imaging and edge detection are thus presented under two output spin states. This work provides a versatile framework for nonlocal metasurfaces, boosting biomedical imaging and sensing applications.https://doi.org/10.1038/s41377-024-01728-3 |
| spellingShingle | Jin Yao Yubin Fan Yunhui Gao Rong Lin Zhihui Wang Mu Ku Chen Shumin Xiao Din Ping Tsai Nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging Light: Science & Applications |
| title | Nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging |
| title_full | Nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging |
| title_fullStr | Nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging |
| title_full_unstemmed | Nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging |
| title_short | Nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging |
| title_sort | nonlocal huygens meta lens for high quality factor spin multiplexing imaging |
| url | https://doi.org/10.1038/s41377-024-01728-3 |
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