Journal
OPTICS LETTERS
Volume 31, Issue 1, Pages 98-100Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.31.000098
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Plasmon-polariton transport on chains of noncontacting noble-metal nanoparticles suffers from severe attenuation. A possible way of countering the attenuation by,embedding the nanopartide chain in an opticalgain medium is considered. It is found that short-wavelength surface polaritons can acquire exponential growth that can counter nonradiative loss. This is most pronounced for modes polarized transverse to the chain axis immediately outside the light line; this growth factor is likely to be sufficient to counterbalance losses and so lead to low-attenuation propagation of plasmon polaritons in nanoparticle chains. (c) 2006 Optical Society of America.
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