253692.fig.009a
(a)
253692.fig.009b
(b)
253692.fig.009c
(c)
253692.fig.009d
(d)
Figure 9: 2D and 3D normalized intensity distribution of Bessel multiplasmon in the air at the distance μm from the interface of 50 nm thickness gold film of “SF10 glass—Au layer—air” structure. Bessel surface multiplasmon polariton is a superposition of and low-index (a, c) and high-index (b, d) BSPPs with wavelength μm.