Enhancing the Terahertz Absorption Spectrum Based on the Low Refractive Index All-Dielectric Metasurface
We presented an angle-multiplexing low refractive index dielectric metasurface for terahertz absorption spectrum enhancement of lactose with high Q resonance properties. The unit cell structure of the acrylonitrile butadiene styrene (ABS) square structure is designed and optimized. The resonant peak...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/11/848 |
| _version_ | 1797466817436844032 |
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| author | Pingan Liu Wenping Li Naichang Chen Chan Ma Xiangjun Li Dexian Yan |
| author_facet | Pingan Liu Wenping Li Naichang Chen Chan Ma Xiangjun Li Dexian Yan |
| author_sort | Pingan Liu |
| collection | DOAJ |
| description | We presented an angle-multiplexing low refractive index dielectric metasurface for terahertz absorption spectrum enhancement of lactose with high Q resonance properties. The unit cell structure of the acrylonitrile butadiene styrene (ABS) square structure is designed and optimized. The resonant peak shifts of the dielectric metasurface are analyzed by changing the incident angle of the terahertz wave. Then the α-lactose films with different thicknesses are added to investigate the enhancement effect. The resonant peak amplitude of the angle-multiplexing low refractive index dielectric metasurface absorption spectrum changes greatly with the absorption spectrum of the samples. The results illustrate that the enhanced absorption spectrum formed by the linked envelope can be up to 45 times stronger than that without the unit cell structures and also exhibits a high-quality factor. The proposed dielectric metasurface provides great potential in enhancing the terahertz absorption spectrum. |
| first_indexed | 2024-03-09T18:44:06Z |
| format | Article |
| id | doaj.art-6c053e231d8f4fcab1aa3352d450036a |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T18:44:06Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-6c053e231d8f4fcab1aa3352d450036a2023-11-24T06:23:19ZengMDPI AGPhotonics2304-67322022-11-0191184810.3390/photonics9110848Enhancing the Terahertz Absorption Spectrum Based on the Low Refractive Index All-Dielectric MetasurfacePingan Liu0Wenping Li1Naichang Chen2Chan Ma3Xiangjun Li4Dexian Yan5Qingdao Qingyuanfengda Terahertz Technology Co., Ltd., Qingdao 266100, ChinaQingdao Qingyuanfengda Terahertz Technology Co., Ltd., Qingdao 266100, ChinaInstitute of Wenzhou Yongliang Machinery Technology, Wenzhou 325000, ChinaCentre for THz Research, China Jiliang University, Hangzhou 310018, ChinaCentre for THz Research, China Jiliang University, Hangzhou 310018, ChinaCentre for THz Research, China Jiliang University, Hangzhou 310018, ChinaWe presented an angle-multiplexing low refractive index dielectric metasurface for terahertz absorption spectrum enhancement of lactose with high Q resonance properties. The unit cell structure of the acrylonitrile butadiene styrene (ABS) square structure is designed and optimized. The resonant peak shifts of the dielectric metasurface are analyzed by changing the incident angle of the terahertz wave. Then the α-lactose films with different thicknesses are added to investigate the enhancement effect. The resonant peak amplitude of the angle-multiplexing low refractive index dielectric metasurface absorption spectrum changes greatly with the absorption spectrum of the samples. The results illustrate that the enhanced absorption spectrum formed by the linked envelope can be up to 45 times stronger than that without the unit cell structures and also exhibits a high-quality factor. The proposed dielectric metasurface provides great potential in enhancing the terahertz absorption spectrum.https://www.mdpi.com/2304-6732/9/11/848dielectric metasurfaceangle-multiplexingterahertz absorption spectrum enhancement |
| spellingShingle | Pingan Liu Wenping Li Naichang Chen Chan Ma Xiangjun Li Dexian Yan Enhancing the Terahertz Absorption Spectrum Based on the Low Refractive Index All-Dielectric Metasurface Photonics dielectric metasurface angle-multiplexing terahertz absorption spectrum enhancement |
| title | Enhancing the Terahertz Absorption Spectrum Based on the Low Refractive Index All-Dielectric Metasurface |
| title_full | Enhancing the Terahertz Absorption Spectrum Based on the Low Refractive Index All-Dielectric Metasurface |
| title_fullStr | Enhancing the Terahertz Absorption Spectrum Based on the Low Refractive Index All-Dielectric Metasurface |
| title_full_unstemmed | Enhancing the Terahertz Absorption Spectrum Based on the Low Refractive Index All-Dielectric Metasurface |
| title_short | Enhancing the Terahertz Absorption Spectrum Based on the Low Refractive Index All-Dielectric Metasurface |
| title_sort | enhancing the terahertz absorption spectrum based on the low refractive index all dielectric metasurface |
| topic | dielectric metasurface angle-multiplexing terahertz absorption spectrum enhancement |
| url | https://www.mdpi.com/2304-6732/9/11/848 |
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