Fig. 10. Strength of the SPP launched on the front facet of the metallic host as function of the slit width (λo= 650 nm, semi-infinite silver host). The magnitude of Ey( z= ½w+ 6.2 μm, y= −20 nm) is taken as the SPP’s strength. The incident Gaussian beam is described in the caption to Fig. 5.
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