Robust Achromatic All-Dielectric Metalens for Infrared Detection in Intelligent Inspection
Metalens has the advantages of high design freedom, light weight and easy integration, thus provides a powerful platform for infrared detection. Here, we numerically demonstrated a broadband achromatic infrared all-dielectric metalens over a continuous 800 nm bandwidth, with strong environmental ada...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/17/6590 |
| _version_ | 1797493093279203328 |
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| author | Wenrong Si Zhengyong Hu Dun Lan Yi Zhou Wei Li |
| author_facet | Wenrong Si Zhengyong Hu Dun Lan Yi Zhou Wei Li |
| author_sort | Wenrong Si |
| collection | DOAJ |
| description | Metalens has the advantages of high design freedom, light weight and easy integration, thus provides a powerful platform for infrared detection. Here, we numerically demonstrated a broadband achromatic infrared all-dielectric metalens over a continuous 800 nm bandwidth, with strong environmental adaptability in air, water and oil. By building a database with multiple 2π phase coverage and anomalous dispersions, optimizing the corrected required phase profiles and designing the sizes and spatial distributions of silicon nanopillars, we numerically realized the design of broadband achromatic metalens. The simulation results of the designed metalens show nearly constant focal lengths and diffraction-limited focal spots over the continuous range of wavelengths from 4.0 to 4.8 μm, indicating the ability of the designed metalens to detect thermal signals over a temperature range from various fault points. Further simulation results show that the metalens maintains good focusing performance under the environment of water or oil. This work may facilitate the application of metalens in ultra-compact infrared detectors for power grid faults detection. |
| first_indexed | 2024-03-10T01:15:03Z |
| format | Article |
| id | doaj.art-4e8f9e2002954b80958414d5b501a9b9 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T01:15:03Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-4e8f9e2002954b80958414d5b501a9b92023-11-23T14:11:06ZengMDPI AGSensors1424-82202022-08-012217659010.3390/s22176590Robust Achromatic All-Dielectric Metalens for Infrared Detection in Intelligent InspectionWenrong Si0Zhengyong Hu1Dun Lan2Yi Zhou3Wei Li4State Grid Shanghai Electrical Power Research Institute, Shanghai 200437, ChinaState Grid Shanghai Electrical Power Research Institute, Shanghai 200437, ChinaState Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, ChinaState Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, ChinaState Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, ChinaMetalens has the advantages of high design freedom, light weight and easy integration, thus provides a powerful platform for infrared detection. Here, we numerically demonstrated a broadband achromatic infrared all-dielectric metalens over a continuous 800 nm bandwidth, with strong environmental adaptability in air, water and oil. By building a database with multiple 2π phase coverage and anomalous dispersions, optimizing the corrected required phase profiles and designing the sizes and spatial distributions of silicon nanopillars, we numerically realized the design of broadband achromatic metalens. The simulation results of the designed metalens show nearly constant focal lengths and diffraction-limited focal spots over the continuous range of wavelengths from 4.0 to 4.8 μm, indicating the ability of the designed metalens to detect thermal signals over a temperature range from various fault points. Further simulation results show that the metalens maintains good focusing performance under the environment of water or oil. This work may facilitate the application of metalens in ultra-compact infrared detectors for power grid faults detection.https://www.mdpi.com/1424-8220/22/17/6590metalensachromaticinfrared detection |
| spellingShingle | Wenrong Si Zhengyong Hu Dun Lan Yi Zhou Wei Li Robust Achromatic All-Dielectric Metalens for Infrared Detection in Intelligent Inspection Sensors metalens achromatic infrared detection |
| title | Robust Achromatic All-Dielectric Metalens for Infrared Detection in Intelligent Inspection |
| title_full | Robust Achromatic All-Dielectric Metalens for Infrared Detection in Intelligent Inspection |
| title_fullStr | Robust Achromatic All-Dielectric Metalens for Infrared Detection in Intelligent Inspection |
| title_full_unstemmed | Robust Achromatic All-Dielectric Metalens for Infrared Detection in Intelligent Inspection |
| title_short | Robust Achromatic All-Dielectric Metalens for Infrared Detection in Intelligent Inspection |
| title_sort | robust achromatic all dielectric metalens for infrared detection in intelligent inspection |
| topic | metalens achromatic infrared detection |
| url | https://www.mdpi.com/1424-8220/22/17/6590 |
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