Plasmonically induced perfect absorption in graphene/metal system
Abstract The constructive interference of bright and dark plasmonic modes results in plasmon-induced absorption (PIA) effect. Here, we theoretically investigate PIA effect, which is realized by the constructive interference between a Fabry-Perot (F-P) resonance mode and a graphene quasi-guided mode....
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doaj-2569b1ebef17411b8c58842503c76c492020-11-25T03:41:19ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2019-08-011411810.1186/s11671-019-3121-9Plasmonically induced perfect absorption in graphene/metal systemCheng Hu0Qi Lin1Xiang Zhai2Mengting Wen3Lingling Wang4Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan UniversityKey Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan UniversityKey Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan UniversityKey Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan UniversityKey Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan UniversityAbstract The constructive interference of bright and dark plasmonic modes results in plasmon-induced absorption (PIA) effect. Here, we theoretically investigate PIA effect, which is realized by the constructive interference between a Fabry-Perot (F-P) resonance mode and a graphene quasi-guided mode. Numerical simulation reveals at least three advantages of our structure over previous ones. First, the extinction ratio can reach ~ 99.999%, resulting in the ultra-high figure of merit* (FOM*) as high as 106. Second, the intensity of this pronounced PIA effect can be optimized by adjusting the coupling distance. Third, the resonance frequency can be easily tunable by tuning the graphene Fermi level. This system may have potential applications in dynamically optical switching and biochemical sensing.http://link.springer.com/article/10.1186/s11671-019-3121-9Plasmonically induced absorptionGraphenePerfect absorption |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Cheng Hu Qi Lin Xiang Zhai Mengting Wen Lingling Wang |
spellingShingle |
Cheng Hu Qi Lin Xiang Zhai Mengting Wen Lingling Wang Plasmonically induced perfect absorption in graphene/metal system Nanoscale Research Letters Plasmonically induced absorption Graphene Perfect absorption |
author_facet |
Cheng Hu Qi Lin Xiang Zhai Mengting Wen Lingling Wang |
author_sort |
Cheng Hu |
title |
Plasmonically induced perfect absorption in graphene/metal system |
title_short |
Plasmonically induced perfect absorption in graphene/metal system |
title_full |
Plasmonically induced perfect absorption in graphene/metal system |
title_fullStr |
Plasmonically induced perfect absorption in graphene/metal system |
title_full_unstemmed |
Plasmonically induced perfect absorption in graphene/metal system |
title_sort |
plasmonically induced perfect absorption in graphene/metal system |
publisher |
SpringerOpen |
series |
Nanoscale Research Letters |
issn |
1931-7573 1556-276X |
publishDate |
2019-08-01 |
description |
Abstract The constructive interference of bright and dark plasmonic modes results in plasmon-induced absorption (PIA) effect. Here, we theoretically investigate PIA effect, which is realized by the constructive interference between a Fabry-Perot (F-P) resonance mode and a graphene quasi-guided mode. Numerical simulation reveals at least three advantages of our structure over previous ones. First, the extinction ratio can reach ~ 99.999%, resulting in the ultra-high figure of merit* (FOM*) as high as 106. Second, the intensity of this pronounced PIA effect can be optimized by adjusting the coupling distance. Third, the resonance frequency can be easily tunable by tuning the graphene Fermi level. This system may have potential applications in dynamically optical switching and biochemical sensing. |
topic |
Plasmonically induced absorption Graphene Perfect absorption |
url |
http://link.springer.com/article/10.1186/s11671-019-3121-9 |
work_keys_str_mv |
AT chenghu plasmonicallyinducedperfectabsorptioningraphenemetalsystem AT qilin plasmonicallyinducedperfectabsorptioningraphenemetalsystem AT xiangzhai plasmonicallyinducedperfectabsorptioningraphenemetalsystem AT mengtingwen plasmonicallyinducedperfectabsorptioningraphenemetalsystem AT linglingwang plasmonicallyinducedperfectabsorptioningraphenemetalsystem |
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1724530355886620672 |