Volume 120, Number 2, October 2017
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||15 January 2018|
Plasmon-induced transparency in graphene-based terahertz metamaterials
1 Department of Physics, Indian Institute of Technology Guwahati - Guwahati 781039, Assam, India
2 Mahindra École Centrale - Jeedimetla, Hyderabad 500043, Telangana, India
Received: 9 November 2017
Accepted: 21 December 2017
Plasmon-induced transparency (PIT) effect in a terahertz graphene metamaterial is numerically and theoretically analyzed. The proposed metamaterial comprises of a pair of graphene split ring resonators placed alternately on both sides of a graphene strip of nanometer scale. The PIT effect in the graphene metamaterial is studied for different vertical and horizontal configurations. We have shown that the PIT effect can be tuned by varying the Fermi energy of the graphene layer. A theoretical model using the three-level plasmonic system is established in order to validate the numerical results. Our studies could be significant in designing graphene-based frequency agile ultra-thin devices for terahertz applications.
PACS: 78.67.Pt – Multilayers; superlattices; photonic structures; metamaterials / 78.67.Wj – Optical properties of graphene / 73.20.Mf – Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)
© EPLA, 2018
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