Antireflection of optical anisotropic dielectric metasurfaces
Abstract We propose a hetero-nano-fin structure to further improve the efficiency of Pancharatnam–Berry phase metasurfaces. Two hetero-nano-fin types, MgF2/GaN and MgF2/Nb2O5, were investigated. The overall polarization conversion efficiency (PCE) improved from 52.7 to 54% for the MgF2/GaN nano-fin...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-28619-8 |
| _version_ | 1811171776912162816 |
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| author | Yu-Hsuan Liao Wei-Lun Hsu Chen-Yi Yu Chih-Ming Wang |
| author_facet | Yu-Hsuan Liao Wei-Lun Hsu Chen-Yi Yu Chih-Ming Wang |
| author_sort | Yu-Hsuan Liao |
| collection | DOAJ |
| description | Abstract We propose a hetero-nano-fin structure to further improve the efficiency of Pancharatnam–Berry phase metasurfaces. Two hetero-nano-fin types, MgF2/GaN and MgF2/Nb2O5, were investigated. The overall polarization conversion efficiency (PCE) improved from 52.7 to 54% for the MgF2/GaN nano-fin compared with the bare GaN nano-fin. The overall PCE of the Nb2O5 nano-fin was 1.7 times higher than that of the GaN nano-fin. The overall PCE improved from 92.4% up to 96% after the application of MgF2 antireflection. Moreover, the antireflection improves efficiency by an average of 4.3% in wavelengths from 450 to 700 nm. Although the increment of energy seems minimal, antireflection is crucial for a metasurface, not only enhancing efficiency but also reducing background signal of a meta-device. |
| first_indexed | 2024-04-10T17:19:42Z |
| format | Article |
| id | doaj.art-a912169dd9ae4ed2aa782c621442082b |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-10T17:19:42Z |
| publishDate | 2023-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-a912169dd9ae4ed2aa782c621442082b2023-02-05T12:10:17ZengNature PortfolioScientific Reports2045-23222023-01-011311910.1038/s41598-023-28619-8Antireflection of optical anisotropic dielectric metasurfacesYu-Hsuan Liao0Wei-Lun Hsu1Chen-Yi Yu2Chih-Ming Wang3Department of Optics and Photonics, National Central UniversityDepartment of Optics and Photonics, National Central UniversityDepartment of Optics and Photonics, National Central UniversityDepartment of Optics and Photonics, National Central UniversityAbstract We propose a hetero-nano-fin structure to further improve the efficiency of Pancharatnam–Berry phase metasurfaces. Two hetero-nano-fin types, MgF2/GaN and MgF2/Nb2O5, were investigated. The overall polarization conversion efficiency (PCE) improved from 52.7 to 54% for the MgF2/GaN nano-fin compared with the bare GaN nano-fin. The overall PCE of the Nb2O5 nano-fin was 1.7 times higher than that of the GaN nano-fin. The overall PCE improved from 92.4% up to 96% after the application of MgF2 antireflection. Moreover, the antireflection improves efficiency by an average of 4.3% in wavelengths from 450 to 700 nm. Although the increment of energy seems minimal, antireflection is crucial for a metasurface, not only enhancing efficiency but also reducing background signal of a meta-device.https://doi.org/10.1038/s41598-023-28619-8 |
| spellingShingle | Yu-Hsuan Liao Wei-Lun Hsu Chen-Yi Yu Chih-Ming Wang Antireflection of optical anisotropic dielectric metasurfaces Scientific Reports |
| title | Antireflection of optical anisotropic dielectric metasurfaces |
| title_full | Antireflection of optical anisotropic dielectric metasurfaces |
| title_fullStr | Antireflection of optical anisotropic dielectric metasurfaces |
| title_full_unstemmed | Antireflection of optical anisotropic dielectric metasurfaces |
| title_short | Antireflection of optical anisotropic dielectric metasurfaces |
| title_sort | antireflection of optical anisotropic dielectric metasurfaces |
| url | https://doi.org/10.1038/s41598-023-28619-8 |
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