Figure 4
From: Nanowire-supported plasmonic waveguide for remote excitation of surface-enhanced Raman scattering
(a) The excitation of various SPP modes in a metal nanowire, where θ is the angle between the incident polarization and nanowire axis. (b) Parallel excitation (θ=0°) at incident phases φ=0 for the m=0 SPP mode. (c) Parallel excitation (θ=0°) at incident phases φ=π/2 for the m=−1 SPP mode. (d) Perpendicular excitation (θ=90°) at incident phases φ=0 for the m=1 SPP mode. (e) Perpendicular excitation (θ=90°) at incident phases φ=π/2 for the m=2 SPP mode. The inset is the E-field profile of each SPP mode. Figure reproduced with permission: Ref. 9, © 2011, APS. SPP, surface plasmon polariton.
