Anomalous extinction independence on the polarization of one dimension metallic ellipsoid nanoparticle chains

A series of silver ellipsoid nanoparticles are arranged in a line to investigate the anomalous extinction with the incident polarizations both perpendicular and parallel to the chains. Due to the partial interaction among the units, the anomalous extinction −like effect appears for the polarization along the chain with the long axis of the ellipsoid perpendicular to the chain. If the polarization changes from 0 to 2π, the extinction cross sections changed with the polarization angle are different in the structure of the long axis of the ellipsoid perpendicular to the chain with a certain lattice constant, which the phase difference is π/2. Our structure has potential applications in the optical key distributions.