Journal
SCIENCE
Volume 325, Issue 5947, Pages 1513-1515Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1177031
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Funding
- European Commission [213390]
- Bundesministerium fur Bildung und Forschung (BMBF)
- Helmholtz-Hochschul-Nachwuchsgruppe [VH-NG-232]
- DFG Emmy-Noether [DFG-Fr 1671/4-3]
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We investigated propagation of light through a uniaxial photonic metamaterial composed of three-dimensional gold helices arranged on a two-dimensional square lattice. These nanostructures are fabricated via an approach based on direct laser writing into a positive-tone photoresist followed by electrochemical deposition of gold. For propagation of light along the helix axis, the structure blocks the circular polarization with the same handedness as the helices, whereas it transmits the other, for a frequency range exceeding one octave. The structure is scalable to other frequency ranges and can be used as a compact broadband circular polarizer.
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