Figure 4
Transmission spectra of (a) non-flipped and (d) alternately flipped SAPBs metasurfaces with a gap (50 nm) for different L 2. The spectra around 210 THz are zoomed in as an inset in (d). The normalized z-component of the electric field in the x-y plane that is 5 nm above the top surface of (b) non-flipped and (e) alternately flipped SAPBs, and normalized electric field in the x-y plane bisecting the bars at the FR around (c) 240.9 THz in SAPBs and (f) 210.5 THz in alternately flipped SAPBs for L 2 = 650 nm.
