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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
Plasmonic metamaterial wave retarders in reflection by orthogonally oriented detuned electrical dipoles
Anders Pors1, Michael G Nielsen, Giuseppe Della Valle
1Mads Clausen Institute (MCI), University of Southern Denmark, Alsion 2, DK-6400 Sønderborg, Denmark. pors@mci.sdu.dk
Abstract:
We demonstrate that a pair of perpendicular electrical dipolar scatterers resonating at different frequencies can be used as a metamaterial unit cell to construct a nanometer-thin retarder in reflection, designing nanocross and nanobrick plasmonic configurations to function as reflecting quarter-wave plates at ~1520 and 770 nm, respectively. The design is corroborated experimentally with a monolayer of gold nanobricks, transforming linearly polarized incident radiation into circularly polarized radiation at ~780 nm.

