Tunable asymmetric transmission of THz wave through a graphene planar chiral structure
arXiv:1505.00169 · doi:10.1088/2040-8978/18/9/095001
Abstract
In this letter, we show that asymmetric transmission of circularly polarized waves through a nanostructured planar chiral graphene film can be observed in terahertz range. The asymmetric transmission effect of monatomic layer graphene closely resembles that of metallic planar chiral nanostructures which has previously been demonstrated. And the relative enantiomeric difference in the total transmission varies with the change of graphene's Fermi level. The plasmonic excitation in the graphene nanostructure is the enantiometically 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.
4 pages, 4 figures
References in corpus (14)
- Electric Field Effect in Atomically Thin Carbon Films
- Graphene plasmonics
- Gate-tuning of graphene plasmons revealed by infrared nano-imaging
- Optical nano-imaging of gate-tuneable graphene plasmons
- Dielectric function, screening, and plasmons in 2D graphene
- Graphene Plasmonics for Terahertz to Mid-Infrared Applications
- Mid-Infrared Plasmonic Biosensing with Graphene
- Graphene Plasmonics: Challenges and Opportunities
- Manipulating infrared photons using plasmons in transparent graphene superlattices
- Optical far-infrared properties of graphene monolayer and multilayers
- Space-time dispersion of graphene conductivity
- Planar metamaterial with transmission and reflection that depend on the direction of incidence
- Gain Modulation by Graphene Plasmons in Aperiodic Lattice Lasers
- Elliptical dichroism: operating principle of planar chiral metamaterials