Necessary conditions for out-of-plane lattice plasmons in nanoparticle arrays
Necessary conditions for out-of-plane lattice plasmons in nanoparticle arrays
Out-of-plane lattice plasmons (OLPs) supported by metallic nanoparticle arrays are promising for diverse applications due to their remarkably narrow linewidths and significant enhancement of local fields. Here we investigate the necessary conditions for metallic nanoparticle arrays to achieve OLPs. Our results show that, besides the prerequisites of large height, oblique …