Abstract

External optical coupling into and out of semi-infinite chains of noncontacting noble-metal nanoparticles is found to be highly directional. While strong coupling of external radiation into and out of low-attenuation surface plasmon polaritons (PPs) in semi-infinite nanoparticle chains is predicted, the radiation patterns are quite complex indicating possible challenges in mode matching. We show that a treatment that neglects end effects provides an entirely inadequate description of both the PPs on the chain and of the scattered electromagnetic radiation.

© 2008 Optical Society of America

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