Enhancement of current density amplitude of localised propagation of a surface plasmon polariton beam in a metallic slit- groove nanostructure

We propose an innovative design for metallic slit-groove nanostructure to increase the propagation intensityof a unidirectional surface plasmon polariton (SPP) light beam. Our idea is based on the combination of the concept ofunidirectional plasmonic wave propagation in a metallic slit-groove nanostructure and the well- known hybrid modes ofa hybrid metal-dielectric waveguide. Our results demonstrate that the hybrid nanostructure results in up to 5 timesenhancement in the SPP beam intensity relative to the conventional design of slit-groove nanostructure.

کلیدواژه ها:

Surface plasmon polariton (SPP) ، Hybrid plasmonic waveguide ، Metallic slit-groove nanostructure