Journal
RESULTS IN PHYSICS
Volume 23, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.rinp.2021.104040
Keywords
Graphene; Metasurface; Plasma induced transparency; Slow light
Funding
- National Natural Science Foundation of China [62001131]
- Guangxi Key Laboratory of Wireless Broadband Communication and Signal Processing [GXKL06190102]
- Guangxi Natural Science Foundation [62001131, 2019GXNSFBA245066, AD19245042]
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This paper proposes a dynamically tunable plasmon induced transparency planar structure with double layers hollow-cross graphene array. By adjusting the Fermi energy of graphene, a transparent window with maximum transmissivity of 98.3% and modulation depth of 17.3% can be dynamically manipulated, providing a new scenario for innovative designs of plasmon-induced transparent structures.
A dynamically tunable plasmon induced transparency planar structure with double layers hollow-cross graphene array is proposed in this paper. Due to energy oscillating back and forth between two weak hybridized states made up of upper and lower graphene, a transparent window during two resonance points is generated, and the PIT curve fits well with the Lorentz model. Via tuning the Fermi energy of graphene, a transparent window with the maximum transmissivity of 98.3% and modulation depth of 17.3% can be dynamically manipulated. In addition, the amplitude and frequency of the transmittance can be controlled by electrical doping without changing the structure. The structure provides a new scenario for innovative designs of plasmon-induced transparent structures. The proposed graphene-based PIT metamaterial shows promising applications of slow light technology, switchers, and filters in THz frequencies.
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