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Nano Lett. 2011 Jun 8;11(6):2231-5. doi: 10.1021/nl200255t. Epub 2011 May 4.

All-plasmonic modulation via stimulated emission of copropagating surface plasmon polaritons on a substrate with gain.

Author information

1
Nano-optics and Near-field Spectroscopy Group, Department of Physics, King's College London, Strand, London WC2R 2LS, United Kingdom. alexey.krasavin@kcl.ac.uk

Abstract

We experimentally demonstrate suppressed absorption and stimulated emission of surface plasmon polaritons (SPP) leading to all-plasmonic modulation of an SPP signal propagating at the interface between a metal and a gain medium; these observations are supported by the developed theory. The use of copropagating signal and control waves can provide more than 10 times more efficient SPP stimulated emission compared to out-of-plane pumping and opens up the possibility to realize integratable plasmonic components for active nanophotonic circuitry.

PMID:
21542632
DOI:
10.1021/nl200255t
[Indexed for MEDLINE]
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