Graphene/Insulator Stack Based Ultrasensitive Terahertz Sensor With Surface Plasmon Resonance
We proposed a terahertz (THz) surface plasmon resonance (SPR) sensor with Kretschmann coupling configuration with buffer layer covered substrate containing doped monolayer graphene (MLG) directly deposited onto the coupling prism. The performance of the SPR sensor in terms of detection accuracy, sen...
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| Format: | Article |
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IEEE
2017-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8078268/ |
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| author | Yi Huang Shuncong Zhong Yaochun Shen Ligang Yao Yingjie Yu Daxiang Cui |
| author_facet | Yi Huang Shuncong Zhong Yaochun Shen Ligang Yao Yingjie Yu Daxiang Cui |
| author_sort | Yi Huang |
| collection | DOAJ |
| description | We proposed a terahertz (THz) surface plasmon resonance (SPR) sensor with Kretschmann coupling configuration with buffer layer covered substrate containing doped monolayer graphene (MLG) directly deposited onto the coupling prism. The performance of the SPR sensor in terms of detection accuracy, sensitivity and figure of merit (FOM) were investigated by applying angular interrogation technique. The results demonstrated that the prism/substrate/graphene coupling structure has higher detection accuracy after coating a low-permittivity buffer layer underneath graphene. Moreover, the sensitivity of sensor could be enhanced using larger refractive index substrate. Furthermore, this proposed structure could effectively overcome the challenge that sample preparation with a small thickness needs to be maintained in Otto geometry based sensor. The results showed the maximum sensitivity of the THz plasmonic sensor up to 49.5 deg/RIU along with a FOM of 8.76 RIU<sup>-1</sup>. The prominent characteristics of the proposed structure would pave the way for high-performance THz plasmonic sensors. |
| format | Article |
| id | doaj-art-124e89f92d214d1ca9a1de495f0e0239 |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-124e89f92d214d1ca9a1de495f0e02392025-08-20T03:15:47ZengIEEEIEEE Photonics Journal1943-06552017-01-019611110.1109/JPHOT.2017.27651828078268Graphene/Insulator Stack Based Ultrasensitive Terahertz Sensor With Surface Plasmon ResonanceYi Huang0Shuncong Zhong1https://orcid.org/0000-0001-8999-2701Yaochun Shen2Ligang Yao3Yingjie Yu4Daxiang Cui5Laboratory of Optics, Terahertz and Non-Destructive Testing, School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, ChinaLaboratory of Optics, Terahertz and Non-Destructive Testing, School of Mechanical Engineering and Automation, Department of Precision Mechanical Engineering, Fuzhou University, Shanghai University, Fuzhou, Shanghai, ChinaChinaLaboratory of Optics, Terahertz and Non-Destructive Testing, School of Mechanical Engineering and Automation, Department of Electrical Engineering and Electronics, Fuzhou University, University of Liverpool, Fuzhou, ChinaU.K.Laboratory of Optics, Terahertz and Non-Destructive Testing, School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, ChinaDepartment of Precision Mechanical Engineering, Shanghai University, Shanghai, ChinaDepartment of Bio-Nano Science and Engineering, Shanghai Jiaotong University, Shanghai, ChinaWe proposed a terahertz (THz) surface plasmon resonance (SPR) sensor with Kretschmann coupling configuration with buffer layer covered substrate containing doped monolayer graphene (MLG) directly deposited onto the coupling prism. The performance of the SPR sensor in terms of detection accuracy, sensitivity and figure of merit (FOM) were investigated by applying angular interrogation technique. The results demonstrated that the prism/substrate/graphene coupling structure has higher detection accuracy after coating a low-permittivity buffer layer underneath graphene. Moreover, the sensitivity of sensor could be enhanced using larger refractive index substrate. Furthermore, this proposed structure could effectively overcome the challenge that sample preparation with a small thickness needs to be maintained in Otto geometry based sensor. The results showed the maximum sensitivity of the THz plasmonic sensor up to 49.5 deg/RIU along with a FOM of 8.76 RIU<sup>-1</sup>. The prominent characteristics of the proposed structure would pave the way for high-performance THz plasmonic sensors.https://ieeexplore.ieee.org/document/8078268/TerahertzPlasmonic SensorGrapheneKretschmann coupling configuration. |
| spellingShingle | Yi Huang Shuncong Zhong Yaochun Shen Ligang Yao Yingjie Yu Daxiang Cui Graphene/Insulator Stack Based Ultrasensitive Terahertz Sensor With Surface Plasmon Resonance IEEE Photonics Journal Terahertz Plasmonic Sensor Graphene Kretschmann coupling configuration. |
| title | Graphene/Insulator Stack Based Ultrasensitive Terahertz Sensor With Surface Plasmon Resonance |
| title_full | Graphene/Insulator Stack Based Ultrasensitive Terahertz Sensor With Surface Plasmon Resonance |
| title_fullStr | Graphene/Insulator Stack Based Ultrasensitive Terahertz Sensor With Surface Plasmon Resonance |
| title_full_unstemmed | Graphene/Insulator Stack Based Ultrasensitive Terahertz Sensor With Surface Plasmon Resonance |
| title_short | Graphene/Insulator Stack Based Ultrasensitive Terahertz Sensor With Surface Plasmon Resonance |
| title_sort | graphene insulator stack based ultrasensitive terahertz sensor with surface plasmon resonance |
| topic | Terahertz Plasmonic Sensor Graphene Kretschmann coupling configuration. |
| url | https://ieeexplore.ieee.org/document/8078268/ |
| work_keys_str_mv | AT yihuang grapheneinsulatorstackbasedultrasensitiveterahertzsensorwithsurfaceplasmonresonance AT shuncongzhong grapheneinsulatorstackbasedultrasensitiveterahertzsensorwithsurfaceplasmonresonance AT yaochunshen grapheneinsulatorstackbasedultrasensitiveterahertzsensorwithsurfaceplasmonresonance AT ligangyao grapheneinsulatorstackbasedultrasensitiveterahertzsensorwithsurfaceplasmonresonance AT yingjieyu grapheneinsulatorstackbasedultrasensitiveterahertzsensorwithsurfaceplasmonresonance AT daxiangcui grapheneinsulatorstackbasedultrasensitiveterahertzsensorwithsurfaceplasmonresonance |