146396.fig.003a
(a)
146396.fig.003b
(b)
146396.fig.003c
(c)
Figure 3: (a) Spectral response of an array of slits on the gold layer (w = 200 nm, p = 600 nm, l = 550 nm) placed over a silica substrate (  = 1.45). Profile of the absolute value of the magnetic field computed at (b) λ = 626.5 nm and (c) λ = 901.5 nm; red arrows express the direction of the Poynting vector.