Giant cross polarization in a nanoimprinted metamaterial combining a fishnet with its Babinet complement

We present a large area (1 cm2) nanoimprinted metamaterial comprising a fishnet structure and its Babinet complement, which shows giant cross polarization. When illuminated with s-polarized light, the reflected beam can be p-polarized up to 96%, depending on the azimuthal orientation of the sample....

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Bibliographic Details
Published in:Optics express 2015-07, Vol.23 (15), p.19034-19046
Main Authors: Dong, Lin, Haslinger, Michael J, Danzberger, Jürgen, Bergmair, Iris, Hingerl, Kurt, Hrelescu, Calin, Klar, Thomas A
Format: Article
Language:English
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Summary:We present a large area (1 cm2) nanoimprinted metamaterial comprising a fishnet structure and its Babinet complement, which shows giant cross polarization. When illuminated with s-polarized light, the reflected beam can be p-polarized up to 96%, depending on the azimuthal orientation of the sample. This experimental result is close to the result of numerical simulations, which predict 98.7% of cross-polarization. It is further shown, that 95-100% cross polarization is only achieved in the case when the fishnet is combined with its Babinet complement. Each structure alone (either an ordinary fishnet or a plane with metallic rectangles only) shows substantially less polarization conversion.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.23.019034