Abstract
In this paper, we show numerically that the asymmetric transmission of circularly polarized waves through a graphene chiral metasurface can be observed in the THz range. The relative enantiomeric difference in the total transmission varies with the change of graphene’s Fermi level. The plasmonic excitation in the graphene metasurface is enantiomerically sensitive, which is asymmetric for opposite propagating directions. This phenomenon will deepen our understanding of light-matter interactions in planar chiral structures and may find applications in polarization-sensitive devices, sensors, detectors and other areas.
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