Dielectric Metasurface-Based High-Efficiency Mid-Infrared Optical Filter
Dielectric nanoresonantors may generate both electric and magnetic Mie resonances with low optical loss, thereby offering highly efficient paths for obtaining integrated optical devices. In this paper, we propose and design an optical filter with a high working efficiency in the mid-infrared (mid-IR...
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| Format: | Article |
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MDPI AG
2018-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/8/11/938 |
| _version_ | 1818595132506636288 |
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| author | Fei Shen Qianlong Kang Jingjing Wang Kai Guo Qingfeng Zhou Zhongyi Guo |
| author_facet | Fei Shen Qianlong Kang Jingjing Wang Kai Guo Qingfeng Zhou Zhongyi Guo |
| author_sort | Fei Shen |
| collection | DOAJ |
| description | Dielectric nanoresonantors may generate both electric and magnetic Mie resonances with low optical loss, thereby offering highly efficient paths for obtaining integrated optical devices. In this paper, we propose and design an optical filter with a high working efficiency in the mid-infrared (mid-IR) range, based on an all-dielectric metasurface composed of silicon (Si) nanodisk arrays. We numerically demonstrate that, by increasing the diameter of the Si nanodisk, the range of the proposed reflective optical filter could effectively cover a wide range of operation wavelengths, from 3.8 μm to 4.7 μm, with the reflection efficiencies reaching to almost 100%. The electromagnetic eigen-mode decomposition of the silicon nanodisk shows that the proposed optical filter is based on the excitation of the electric dipole resonance. In addition, we demonstrate that the proposed filter has other important advantages of polarization-independence and incident-angle independence, ranging from 0° to 20° at the resonance dip, which can be used in a broad range of applications, such as sensing, imaging, and energy harvesting. |
| first_indexed | 2024-12-16T11:11:09Z |
| format | Article |
| id | doaj.art-c5661dc01567463a8c5f363a4b6df250 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-16T11:11:09Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-c5661dc01567463a8c5f363a4b6df2502022-12-21T22:33:44ZengMDPI AGNanomaterials2079-49912018-11-0181193810.3390/nano8110938nano8110938Dielectric Metasurface-Based High-Efficiency Mid-Infrared Optical FilterFei Shen0Qianlong Kang1Jingjing Wang2Kai Guo3Qingfeng Zhou4Zhongyi Guo5School of Computer and Information, Hefei University of Technology, Hefei 230009, ChinaSchool of Computer and Information, Hefei University of Technology, Hefei 230009, ChinaSchool of Computer and Information, Hefei University of Technology, Hefei 230009, ChinaSchool of Computer and Information, Hefei University of Technology, Hefei 230009, ChinaSchool of Computer and Information, Hefei University of Technology, Hefei 230009, ChinaSchool of Computer and Information, Hefei University of Technology, Hefei 230009, ChinaDielectric nanoresonantors may generate both electric and magnetic Mie resonances with low optical loss, thereby offering highly efficient paths for obtaining integrated optical devices. In this paper, we propose and design an optical filter with a high working efficiency in the mid-infrared (mid-IR) range, based on an all-dielectric metasurface composed of silicon (Si) nanodisk arrays. We numerically demonstrate that, by increasing the diameter of the Si nanodisk, the range of the proposed reflective optical filter could effectively cover a wide range of operation wavelengths, from 3.8 μm to 4.7 μm, with the reflection efficiencies reaching to almost 100%. The electromagnetic eigen-mode decomposition of the silicon nanodisk shows that the proposed optical filter is based on the excitation of the electric dipole resonance. In addition, we demonstrate that the proposed filter has other important advantages of polarization-independence and incident-angle independence, ranging from 0° to 20° at the resonance dip, which can be used in a broad range of applications, such as sensing, imaging, and energy harvesting.https://www.mdpi.com/2079-4991/8/11/938optical filterdielectric metasurfacesmid-infrared (mid-IR) |
| spellingShingle | Fei Shen Qianlong Kang Jingjing Wang Kai Guo Qingfeng Zhou Zhongyi Guo Dielectric Metasurface-Based High-Efficiency Mid-Infrared Optical Filter Nanomaterials optical filter dielectric metasurfaces mid-infrared (mid-IR) |
| title | Dielectric Metasurface-Based High-Efficiency Mid-Infrared Optical Filter |
| title_full | Dielectric Metasurface-Based High-Efficiency Mid-Infrared Optical Filter |
| title_fullStr | Dielectric Metasurface-Based High-Efficiency Mid-Infrared Optical Filter |
| title_full_unstemmed | Dielectric Metasurface-Based High-Efficiency Mid-Infrared Optical Filter |
| title_short | Dielectric Metasurface-Based High-Efficiency Mid-Infrared Optical Filter |
| title_sort | dielectric metasurface based high efficiency mid infrared optical filter |
| topic | optical filter dielectric metasurfaces mid-infrared (mid-IR) |
| url | https://www.mdpi.com/2079-4991/8/11/938 |
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