Broadband polarizers based on graphene metasurfaces.
Opt Lett
; 41(23): 5592-5595, 2016 Dec 01.
Article
em En
| MEDLINE
| ID: mdl-27906247
ABSTRACT
We present terahertz metasurfaces based on aligned rectangular graphene patches placed on top of a dielectric layer to convert the transmitted linearly polarized waves to circular or elliptical polarized radiation. Our results lead to the design of an ultrathin broadband terahertz quarter-wave plate. In addition, ultrathin metasurfaces based on the arrays of L-shaped graphene periodic patches are demonstrated to achieve broadband cross-polarization transformation in reflection and transmission. The proposed metasurface designs have tunable responses and are envisioned to become the building blocks of several integrated terahertz systems.
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MEDLINE
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En
Ano de publicação:
2016
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Article