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, 34 (1), 19-21

Negative-index Bianisotropic Photonic Metamaterial Fabricated by Direct Laser Writing and Silver Shadow Evaporation

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Negative-index Bianisotropic Photonic Metamaterial Fabricated by Direct Laser Writing and Silver Shadow Evaporation

Michael S Rill et al. Opt Lett.

Abstract

We present the blueprint for a novel negative-index metamaterial. This structure is fabricated via three-dimensional two-photon direct laser writing and silver shadow evaporation. The comparison of measured linear optical spectra with theory shows good agreement and reveals a negative real part of the refractive index at around 3.85 microm wavelength -- despite the fact that the metamaterial structure is bianisotropic owing to the lack of inversion symmetry along its surface normal.

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