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

Anders Pors, Michael Grøndahl Nielsen, Giuseppe Della Valle, Morten Willatzen, Ole Albrektsen, Sergey I. Bozhevolnyi

Research output: Contribution to journalJournal articleResearchpeer-review

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.
Original languageEnglish
JournalOptics Letters
Volume36
Issue number9
Pages (from-to)1626-1628
ISSN0146-9592
DOIs
Publication statusPublished - 2011

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