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We investigate the polarizing properties of chiral photonic metamaterials composed of three-dimensional metal helices. The calculated spectra reveal pronounced circular dichroism. Our geometry parameters are compatible with fabrication via direct laser writing and electrodeposition.
We present a planar magnetic metamaterial fabricated using 3D direct laser writing and silver chemical vapor deposition as well as a negative-index bi-anisotropic metamaterial metallized via silver shadow evaporation. Calculations and experiments show good agreement.
We measure the absolute extinction cross-section spectrum of isolated pairs of split-ring resonators by a modulation technique. The spectral position of the magnetic resonance depends on the separation of the split-ring resonators.
We fabricate planar magnetic photonic metamaterials via direct laser writing and silver chemical vapor deposition, an approach, which is also suitable for three-dimensional structures. Retrieval of the effective metamaterial parameters reveals the importance of bi-anisotropy.
Following the theoretical suggestion of Stockman et al., we have fabricated individual V-shaped silver nanoantennas with 20-nm minimum feature size. Measured attenuated total internal reflection spectra are compared with numerical solutions of the vector Maxwell equations.
We measure the absolute extinction cross section spectra of individual split-ring resonators (fundamental magnetic resonance at 1.4-mum wavelength). The experiments are compared with a simple electric-circuit model and with microscopic calculations.
We fabricate planar magnetic photonic metamaterials via direct laser writing and silver chemical vapor deposition, an approach, which is also suitable for three-dimensional structures. Retrieval of the effective metamaterial parameters reveals the importance of bi-anisotropy.
Using direct laser writing, we fabricate photoresist templates for 3D-2D-3D photonic crystal heterostructures. The optical properties of these structures are directly compared with scattering-matrix calculations, revealing good agreement, hence good sample quality.
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