Tunable Anisotropic Perfect Enhancement Absorption in Black Phosphorus-Based Metasurfaces
In this work, we theoretically propose an anisotropic metasurface absorber, unit cell of which consists of a continuous monolayer black phosphorus (BP) sheet, sandwiched between a circular silver ring and a dielectric layer stacking on a silver substrate. Numerical results reveal that perfect enhanc...
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IEEE
2020-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9068424/ |
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| author | Bin Tang Niegang Yang Li Huang Jiangbin Su Chun Jiang |
| author_facet | Bin Tang Niegang Yang Li Huang Jiangbin Su Chun Jiang |
| author_sort | Bin Tang |
| collection | DOAJ |
| description | In this work, we theoretically propose an anisotropic metasurface absorber, unit cell of which consists of a continuous monolayer black phosphorus (BP) sheet, sandwiched between a circular silver ring and a dielectric layer stacking on a silver substrate. Numerical results reveal that perfect enhancement absorption can be achieved in both armchair and zigzag directions, in which the resonant absorption peaks occur at different wavelengths due to the anisotropic property of BP. The calculated results by finite-difference time domain (FDTD) simulations have a good agreement with the coupled-mode theory. The physical mechanism of the perfect absorption is attributable to the critical coupling effect. Furthermore, the anisotropic perfect absorber not only exhibits tunable characteristics by varying the electron doping concentration, but also shows a wide-angle tolerance. In addition, our proposed absorber can achieve an arbitrary number of absorption bands by setting a suitable thickness of the dielectric layer. These results may have great potential applications in spectral imaging and photodetectors in the mid-infrared region. |
| format | Article |
| id | doaj-art-c46ad3d45f9d46b5a0462d647c3589f0 |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-c46ad3d45f9d46b5a0462d647c3589f02025-08-20T02:41:55ZengIEEEIEEE Photonics Journal1943-06552020-01-011231910.1109/JPHOT.2020.29871579068424Tunable Anisotropic Perfect Enhancement Absorption in Black Phosphorus-Based MetasurfacesBin Tang0https://orcid.org/0000-0001-6871-1966Niegang Yang1Li Huang2Jiangbin Su3Chun Jiang4https://orcid.org/0000-0003-1873-6385School of Mathematics & Physics, Changzhou University, Changzhou, ChinaSchool of Mathematics & Physics, Changzhou University, Changzhou, ChinaSchool of Mathematics & Physics, Changzhou University, Changzhou, ChinaSchool of Mathematics & Physics, Changzhou University, Changzhou, ChinaState Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai, ChinaIn this work, we theoretically propose an anisotropic metasurface absorber, unit cell of which consists of a continuous monolayer black phosphorus (BP) sheet, sandwiched between a circular silver ring and a dielectric layer stacking on a silver substrate. Numerical results reveal that perfect enhancement absorption can be achieved in both armchair and zigzag directions, in which the resonant absorption peaks occur at different wavelengths due to the anisotropic property of BP. The calculated results by finite-difference time domain (FDTD) simulations have a good agreement with the coupled-mode theory. The physical mechanism of the perfect absorption is attributable to the critical coupling effect. Furthermore, the anisotropic perfect absorber not only exhibits tunable characteristics by varying the electron doping concentration, but also shows a wide-angle tolerance. In addition, our proposed absorber can achieve an arbitrary number of absorption bands by setting a suitable thickness of the dielectric layer. These results may have great potential applications in spectral imaging and photodetectors in the mid-infrared region.https://ieeexplore.ieee.org/document/9068424/Metasurfaceperfect absorberblack phosphorus |
| spellingShingle | Bin Tang Niegang Yang Li Huang Jiangbin Su Chun Jiang Tunable Anisotropic Perfect Enhancement Absorption in Black Phosphorus-Based Metasurfaces IEEE Photonics Journal Metasurface perfect absorber black phosphorus |
| title | Tunable Anisotropic Perfect Enhancement Absorption in Black Phosphorus-Based Metasurfaces |
| title_full | Tunable Anisotropic Perfect Enhancement Absorption in Black Phosphorus-Based Metasurfaces |
| title_fullStr | Tunable Anisotropic Perfect Enhancement Absorption in Black Phosphorus-Based Metasurfaces |
| title_full_unstemmed | Tunable Anisotropic Perfect Enhancement Absorption in Black Phosphorus-Based Metasurfaces |
| title_short | Tunable Anisotropic Perfect Enhancement Absorption in Black Phosphorus-Based Metasurfaces |
| title_sort | tunable anisotropic perfect enhancement absorption in black phosphorus based metasurfaces |
| topic | Metasurface perfect absorber black phosphorus |
| url | https://ieeexplore.ieee.org/document/9068424/ |
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