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Opt Lett. 2011 May 1;36(9):1626-8. doi: 10.1364/OL.36.001626.

Plasmonic metamaterial wave retarders in reflection by orthogonally oriented detuned electrical dipoles.

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1
Mads Clausen Institute (MCI), University of Southern Denmark, Alsion 2, DK-6400 S√łnderborg, 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.

PMID:
21540949
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