Journal
OPTICS LETTERS
Volume 41, Issue 23, Pages 5592-5595Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.41.005592
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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. (C) 2016 Optical Society of America
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