Highly Confined Hybrid Spoof Surface Plasmons in Ultrathin Metal-Dielectric Heterostructures
Highly Confined Hybrid Spoof Surface Plasmons in Ultrathin Metal-Dielectric Heterostructures
Highly confined "spoof" surface plasmons (SSPs) are theoretically predicted to exist in a perforated metal film coated with a thin dielectric layer. Strong modes confinement results from the additional waveguiding by the layer. Spectral characteristics, field distribution, and lifetime of these SSPs are tunable by the holes' size and shape. …