Figure 8. Simulation and experimental results of the extinction properties (a) and near electric-field characteristics (b and c) of the fabricated ultrathin corrugated disk sample (placed on the top of a thin dielectric substrate, see inset in panel (a).

The parameters of the sample are:R = 25 mm, r = 2 mm, L = 0.018 mm, d = 2.6 mm (N = 60) and a = 1.3 mm The numerical (b) and experimental (c) near-field maps can be identified with second-order octopole (top) and decapole (bottom) spoof LSP resonances.