Figure 3
Transmission spectra of (a) non-flipped and (c) alternately flipped APBs metasurfaces with different L 2. The spectra around 196 THz are zoomed in as an inset in (c). The normalized z-component of the electric field (b) at 210.5 THz in APBs and (d) at 196 THz in alternately flipped APBs for L 2 = 650 nm. The field distribution is plotted in the x-y plane that is 5 nm above the top surface.
