The ultimate departure from geometrical optics: vortex optical field around plasmonic nanoparticle
Bashevoy, M.V., Fedotov, V.A. and Zheludev, N.I. (2006) The ultimate departure from geometrical optics: vortex optical field around plasmonic nanoparticle. In, QEP-17 at Photon06, Manchester, UK, 04 - 07 Sep 2006.
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Here we report on the discovery of an extreme deviation from geo'metrical optics: light interacting with a metallic nanoparticle, in the proximity of its plasmon resonance, follows curly trajectories with curvatures on a subwavelength scale, creating nanoscale optical vortices. We discuss how the appearance of these vortex structures is related to resonant increases in the absorption and scattering cross-sections of the nano-objects and weather the vortex structure could provide a natural feedback mechanism, thus creating a nano-scale analog of an optical resonator.
|Item Type:||Conference or Workshop Item (Paper)|
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QC Physics
|Divisions:||University Structure - Pre August 2011 > Optoelectronics Research Centre
|Date Deposited:||11 Aug 2008|
|Last Modified:||02 Mar 2012 12:12|
|Contributors:||Bashevoy, M.V. (Author)
Fedotov, V.A. (Author)
Zheludev, N.I. (Author)
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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