Negative-index bi-anisotropic photonic metamaterial fabricated by direct laser writing and silver shadow evaporation

Details Negative-index bi-anisotropic photonic metamaterial fabricated by direct laser writing and silver shadow evaporation Negative-index bi-anisotropic photonic metamaterial fabricated by direct laser writing and silver shadow evaporation

2008-09-12

arxiv.org/abs/0809.2207v1

Physics

Optics

8 pages, 3 figures

Scientific paper

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 micrometer wavelength - despite the fact that the metamaterial structure is bi-anisotropic due to the lack of inversion symmetry along its surface normal.

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