| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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A Novel Method for PIT Effects Based on Plasmonic Decoupling |
| Bin Sun1**, Fei-Feng Xie1, Shuai Kang1, You-chang Yang1, Jian-Qiang Liu2 |
1Department of Physics, Zunyi Normal College, Zunyi 563002
2College of Science, Jiujiang University, Jiujiang 332005
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| Cite this article: |
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Bin Sun, Fei-Feng Xie, Shuai Kang et al 2019 Chin. Phys. Lett. 36 017801 |
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Abstract A tunable dual-band stop-band THz spectrum can be realized in a hybrid structure, which consists of metal nanoribbon arrays clad by graphene nanoribbons. Dual-band spectra can be controlled separately by the nanoribbon width $w$ and graphene chemical potential $\mu_{\rm c}$. We explain that two local plasmonic modes excited at graphene ribbons belong to different gratings, which uncouple with each other by electro-magnetic shielding of the metal ribbons. Furthermore, plasmonic induced transparent (PIT) effects can also be realized by making the two transmission notches close to each other, with better performance than the PIT system based on plasmonic coupling, such as with a larger extinction radio and a tunable transparency window.
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Received: 03 September 2018
Published: 25 December 2018
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| PACS: |
78.67.Wj
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(Optical properties of graphene)
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78.20.-e
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(Optical properties of bulk materials and thin films)
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78.67.Pt
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(Multilayers; superlattices; photonic structures; metamaterials)
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78.66.-w
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(Optical properties of specific thin films)
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| Fund: Supported by the Key Disciplines of Physics of Guizhou Province under Grant No QXWB[2013]18, the Major Research Projects for Innovation Groups of Guizhou Province under Grant No KY[2018]028, the National Natural Science Foundation of China under Grant No 11464052, the Science and Technology Foundation of Guizhou Province under Grant No J[2015]2149, the Youth Foundation of the Education Department of Guizhou Province under Grant No KY[2017]248, the Startup Foundation for Doctors of Zunyi Normal University under Grant No 40300326, and the Natural Science Foundation of Jiangxi Province under Grant No 20161BAB201002. |
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