Dielectric metasurfaces based on a phase singularity in the region of high reflectance
Metasurfaces, two-dimensional planar optical devices based on subwavelength-scale structures, have garnered significant attention for their potential to replace conventional optical components in various fields. These devices can manipulate the amplitude, phase, and polarization of light in versatil...
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-03-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2024-0700 |
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| _version_ | 1849310614608936960 |
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| author | Jang Jaewon Park Minsu Kang Hyeonjeong Han Gyu-Won Cho Hui Jae Park Yeonsang |
| author_facet | Jang Jaewon Park Minsu Kang Hyeonjeong Han Gyu-Won Cho Hui Jae Park Yeonsang |
| author_sort | Jang Jaewon |
| collection | DOAJ |
| description | Metasurfaces, two-dimensional planar optical devices based on subwavelength-scale structures, have garnered significant attention for their potential to replace conventional optical components in various fields. These devices can manipulate the amplitude, phase, and polarization of light in versatile ways, offering complex functionalities within a single, space-efficient device. However, enhancing their functionality remains a challenge, requiring an expansion in the design flexibility of the structural elements, known as meta-atoms. In this study, we revealed that by varying the two independent lengths of the cross-shaped structure at a wavelength of 980 nm, a phase singularity exists in the region of high reflection. In addition, we found that the phase of transmitted light can be modulated from 0 to 2π by encircling this singularity. Based on the identified phase singularity, we designed and fabricated a polarization-independent metalens with varying numerical apertures to experimentally validate the feasibility of high-reflectivity transmissive wavefront engineering metasurfaces. The introduced meta-atoms based on a phase singularity are expected to open new avenues for applications, such as those requiring light attenuation and concentration simultaneously or the development of resonant cavity structures capable of beam modulation. |
| format | Article |
| id | doaj-art-debbc84d332f44b8a3e427d75a2d69fc |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-debbc84d332f44b8a3e427d75a2d69fc2025-08-20T03:53:41ZengDe GruyterNanophotonics2192-86142025-03-011481291130010.1515/nanoph-2024-0700Dielectric metasurfaces based on a phase singularity in the region of high reflectanceJang Jaewon0Park Minsu1Kang Hyeonjeong2Han Gyu-Won3Cho Hui Jae4Park Yeonsang5Departement of Physics, Chungnam National University, Daejeon, KoreaDepartement of Physics, Chungnam National University, Daejeon, KoreaDepartement of Physics, Chungnam National University, Daejeon, KoreaOffice of Nano Convergence Technology, National NanoFab Center, Deajeon, KoreaOffice of Nano Convergence Technology, National NanoFab Center, Deajeon, KoreaDepartement of Physics, Chungnam National University, Daejeon, KoreaMetasurfaces, two-dimensional planar optical devices based on subwavelength-scale structures, have garnered significant attention for their potential to replace conventional optical components in various fields. These devices can manipulate the amplitude, phase, and polarization of light in versatile ways, offering complex functionalities within a single, space-efficient device. However, enhancing their functionality remains a challenge, requiring an expansion in the design flexibility of the structural elements, known as meta-atoms. In this study, we revealed that by varying the two independent lengths of the cross-shaped structure at a wavelength of 980 nm, a phase singularity exists in the region of high reflection. In addition, we found that the phase of transmitted light can be modulated from 0 to 2π by encircling this singularity. Based on the identified phase singularity, we designed and fabricated a polarization-independent metalens with varying numerical apertures to experimentally validate the feasibility of high-reflectivity transmissive wavefront engineering metasurfaces. The introduced meta-atoms based on a phase singularity are expected to open new avenues for applications, such as those requiring light attenuation and concentration simultaneously or the development of resonant cavity structures capable of beam modulation.https://doi.org/10.1515/nanoph-2024-0700dielectric metasurfacescross-shaped structurehigh reflectancephase singularity |
| spellingShingle | Jang Jaewon Park Minsu Kang Hyeonjeong Han Gyu-Won Cho Hui Jae Park Yeonsang Dielectric metasurfaces based on a phase singularity in the region of high reflectance Nanophotonics dielectric metasurfaces cross-shaped structure high reflectance phase singularity |
| title | Dielectric metasurfaces based on a phase singularity in the region of high reflectance |
| title_full | Dielectric metasurfaces based on a phase singularity in the region of high reflectance |
| title_fullStr | Dielectric metasurfaces based on a phase singularity in the region of high reflectance |
| title_full_unstemmed | Dielectric metasurfaces based on a phase singularity in the region of high reflectance |
| title_short | Dielectric metasurfaces based on a phase singularity in the region of high reflectance |
| title_sort | dielectric metasurfaces based on a phase singularity in the region of high reflectance |
| topic | dielectric metasurfaces cross-shaped structure high reflectance phase singularity |
| url | https://doi.org/10.1515/nanoph-2024-0700 |
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