Plasmonic modes in periodic metal nanoparticle chains: A direct dynamic eigenmode analysis

Details Plasmonic modes in periodic metal nanoparticle chains: A direct dynamic eigenmode analysis Plasmonic modes in periodic metal nanoparticle chains: A direct dynamic eigenmode analysis

2006-10-30

arxiv.org/abs/physics/0610269v1

Opt. Lett. 32, 973-975 (2007)

Physics

Optics

3 pages, 3 figures

Scientific paper

10.1364/OL.32.000973

We demonstrate an efficient eigen-decomposition method for analyzing the guided modes in metal nanoparticle chains. The proposed method has the advantage of showing the dispersion relation and mode quality simultaneously. It can also separate the material and geometrical properties, so its efficiency does not depend on the complexity of the material polarizability. The method is applied to analyze the guided modes of a single and a pair of metal chains. The more accurate dynamic dipole polarizability typically gives a red-shift compared with the results obtained with the broadly used quasistatic dipole polarizability with radiation correction.

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