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Phys Rev Lett. 2008 Aug 22;101(8):087403. Epub 2008 Aug 22.

Extremely narrow plasmon resonances based on diffraction coupling of localized plasmons in arrays of metallic nanoparticles.

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  • 1School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, United Kingdom.

Abstract

We experimentally demonstrate extremely narrow plasmon resonances with half-width of just several nanometers in regular arrays of metallic nanoparticles. These resonances are observed at Rayleigh's cutoff wavelengths for Wood anomalies and based on diffraction coupling of localized plasmons. We show experimentally that reflection from an array of nanoparticles can be completely suppressed at certain wavelengths. As a result, our metal nanostructures exhibit pi-jump for the phase of the reflected light.

PMID:
18764660
[PubMed]
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