Surface Plasmons (SP’s)

Surface plasmons (SP’s) are electromagnetic waves that propagate at the interface between metals (such as Ag, Au ) and dielectric material. Here I have simulated the propagation of surface plasmons on Ag-air interface, the color indicates the magnitude of electric field (blue for positive and red for negative).¬† I have used MEEP¬† (a FDTD program that solves for Maxwells equations on numerical grid) to simulate these electric field distribution of these special waves. The source for SP’s is a point dipole and is placed at the center. It is easier to excite SP’s in numerical simulation, however to excite them Read More …