Fig. 2

Surface current distributions at 0.83 THz. (a) Top and (b) bottom layers of the unit cell under XLP incidence. (c) Top and (d) bottom layers of the unit cell under YLP incidence. The surface current distributions at 1.72 THz. (e) Top and (f) bottom layers of the unit cell under XLP incidence. (g) Top and (h) bottom layers of the unit cell under YLP incidence.