Graphene hyperlens for terahertz radiation
Andrei Andryieuskiand Andrei V. Lavrinenko, Dmitry N. Chigrin
Volume: 86, Issue: 12, 27 September 2012
121108 - 121108-5
Graphene hyperlense, terahertz radiation
We propose a graphene hyperlens for the terahertz (THz) range. We employ and numerically examine a structured graphene-dielectric multilayered stack that is an analog of a metallic wire medium. As an example of the graphene hyperlens in action, we demonstrate an imaging of two point sources separated by a distance ?0/5. An advantage of such a hyperlens as compared to a metallic one is the tunability of its properties by changing the chemical potential of graphene. We also propose a method to retrieve the hyperbolic dispersion, check the effective medium approximation, and retrieve the effective permittivity tensor.
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