Dielectric metalenses at long-wave infrared wavelengths: Multiplexing and spectroscope
Metalenses, being composed of subwavelength phase-control nanostructures, can achieve peculiar manipulations of incident rays. Dispersion is one of the key optical characteristics to be eliminated or exploited in designing broadband optical systems. In the study, the silicon metalenses made of nanob...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-09-01
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| Series: | Results in Physics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S221137972031682X |
| _version_ | 1811325844350566400 |
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| author | Feng Tang Xin Ye Qingzhi Li Yiqun Wang Haichao Yu Weidong Wu Bo Li Wanguo Zheng |
| author_facet | Feng Tang Xin Ye Qingzhi Li Yiqun Wang Haichao Yu Weidong Wu Bo Li Wanguo Zheng |
| author_sort | Feng Tang |
| collection | DOAJ |
| description | Metalenses, being composed of subwavelength phase-control nanostructures, can achieve peculiar manipulations of incident rays. Dispersion is one of the key optical characteristics to be eliminated or exploited in designing broadband optical systems. In the study, the silicon metalenses made of nanobricks are investigated to achieve multiwavelength multiplexing or spectroscope in the long-wave infrared regime. Firstly, the geometrical dependencies of silicon nanobricks’ transmittance, phase difference, and structural dispersion are investigated to obtain the fundament of constructing the metalenses. Then, the metalenses are constructed, of which the chromatic aberration is analyzed. Via spatial multiplexing, two multiwavelength-metalens configurations are proposed to realize achromatism and multifocal features respectively. Furthermore, via exploiting the nanobricks’ structural dispersion, a compact spectrometer based on an off-axis metalens is demonstrated. This study gives out an insight into exploiting the structural dispersion of silicon nanobricks in constructing metalenses, which paves an efficient way for the development of integrated imaging and spectroscopy systems in the long-wave infrared range. |
| first_indexed | 2024-04-13T14:40:39Z |
| format | Article |
| id | doaj.art-76485af9ba16480187a8e3682e657e01 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-04-13T14:40:39Z |
| publishDate | 2020-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-76485af9ba16480187a8e3682e657e012022-12-22T02:42:55ZengElsevierResults in Physics2211-37972020-09-0118103215Dielectric metalenses at long-wave infrared wavelengths: Multiplexing and spectroscopeFeng Tang0Xin Ye1Qingzhi Li2Yiqun Wang3Haichao Yu4Weidong Wu5Bo Li6Wanguo Zheng7Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, ChinaResearch Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China; Corresponding authors.Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, ChinaSuzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu 215125, China; Corresponding authors.Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu 215125, ChinaResearch Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, ChinaResearch Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, ChinaIFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China; Corresponding authors.Metalenses, being composed of subwavelength phase-control nanostructures, can achieve peculiar manipulations of incident rays. Dispersion is one of the key optical characteristics to be eliminated or exploited in designing broadband optical systems. In the study, the silicon metalenses made of nanobricks are investigated to achieve multiwavelength multiplexing or spectroscope in the long-wave infrared regime. Firstly, the geometrical dependencies of silicon nanobricks’ transmittance, phase difference, and structural dispersion are investigated to obtain the fundament of constructing the metalenses. Then, the metalenses are constructed, of which the chromatic aberration is analyzed. Via spatial multiplexing, two multiwavelength-metalens configurations are proposed to realize achromatism and multifocal features respectively. Furthermore, via exploiting the nanobricks’ structural dispersion, a compact spectrometer based on an off-axis metalens is demonstrated. This study gives out an insight into exploiting the structural dispersion of silicon nanobricks in constructing metalenses, which paves an efficient way for the development of integrated imaging and spectroscopy systems in the long-wave infrared range.http://www.sciencedirect.com/science/article/pii/S221137972031682XMetasurfacesLong-wave InfraredSpatial Multiplexing, Compact Spectrometers |
| spellingShingle | Feng Tang Xin Ye Qingzhi Li Yiqun Wang Haichao Yu Weidong Wu Bo Li Wanguo Zheng Dielectric metalenses at long-wave infrared wavelengths: Multiplexing and spectroscope Results in Physics Metasurfaces Long-wave Infrared Spatial Multiplexing, Compact Spectrometers |
| title | Dielectric metalenses at long-wave infrared wavelengths: Multiplexing and spectroscope |
| title_full | Dielectric metalenses at long-wave infrared wavelengths: Multiplexing and spectroscope |
| title_fullStr | Dielectric metalenses at long-wave infrared wavelengths: Multiplexing and spectroscope |
| title_full_unstemmed | Dielectric metalenses at long-wave infrared wavelengths: Multiplexing and spectroscope |
| title_short | Dielectric metalenses at long-wave infrared wavelengths: Multiplexing and spectroscope |
| title_sort | dielectric metalenses at long wave infrared wavelengths multiplexing and spectroscope |
| topic | Metasurfaces Long-wave Infrared Spatial Multiplexing, Compact Spectrometers |
| url | http://www.sciencedirect.com/science/article/pii/S221137972031682X |
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