High Absorption and Second-Harmonic Generation in Split Ring Resonator Multilayer Nanostructure

Figure 1

The split ring resonator multilayer nanostructure with the lattice periodic 𝑎_𝑥 and 𝑎_𝑦 along the 𝑥 and 𝑦 directions, respectively. The input light wave is polarized along the 𝑥 direction and propagates along the 𝑧 direction.