Figure 2: Fishnet metamaterial and the conventional analysis.
From: Coherent selection of invisible high-order electromagnetic excitations
(a) Schematic of the metamaterial. The metamaterial has two layers of Au (30 nm in thickness each, yellow colour) sandwiching a layer of Si3N4 (50 nm in thickness, green color). Unit cell dimensions: periodicity Px = Py = 450 nm, slit width W = 40 nm, slit length L = 180 nm. (b) Reflection R, transmission T, and absorption A spectra of the sample under traveling wave excitation. The symmetric and anti-symmetric modes are assigned in accordance with the conventional mode hybridization theory. (c) The electric field intensity in the middle plane of a Au layer. (d) The corresponding magnetic field intensity.
