Potts, A., Papakostas, A., Zheludev, N.I., Coles, H.J., Greef, R. and Bagnall, D.M.
Planar chiral meta-materials for photonic devices
Journal of Materials Science: Materials in Electronics, 14, (5-7), . (doi:10.1023/A:1023960920098).
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We report the first optical results due to the effects of two-dimensional (2D) chirality. Using electron beam lithography we have fabricated arrays of metallic planar chiral structures on dielectric substrates, with characteristic dimensions in the near infra-red, and observed the effects of their chirality on the polarization states of diffracted light. The results showed strong polarization effects, with the handedness of the individual elements having a direct effect on the sense and magnitude of rotation of the diffracted light. We believe such structures could, in the future, form the core of a new class of meta-materials with refractive indices engineered to suit individual optical applications.
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