SPIE. 01/2006; 17:6195.
CLEO, Long Beach; 01/2006
DPG, Frankfurt; 01/2006
OSA, Grand Island, Bahamas; 01/2006
ABSTRACT: A metamaterial consisting of pairs of metallic nanowires, separated by a dielectric spacer, has been fabricated and spectrally
characterized in the visible and near-infrared spectral domain. It is shown, that the structure exhibits both a plasmonic
and a magnetic resonance depending on its geometry and orientation with respect to the illuminating wave field. In particular,
we investigate the influence of the thickness of the spacer layer on the spectral position of the resonances and show that,
for an appropriate adjustment, both resonances coincide. Measurements of the amplitude and the phase of the transmitted wave
are presented. It is also shown that the material is highly anisotropic with respect to the angle of incidence, as the plasmonic
resonance wavelength depends strongly on it whereas the magnetic resonance does not show this sensitivity. All experimental
results are supported by numerical simulations.
Applied Physics B 01/2006; 84:139. · 2.19 Impact Factor