Tailoring the excitation of localized surface plasmon-polariton resonances by focusing radially-polarized beams.
- Mojarad NM Nano-Optics Group, Laboratory of Physical Chemistry, ETH Zurich, Zurich, Switzerland. nassiredin.mojarad@phys.chem.ethz.ch
- Agio M
- 2009-01-09
Published in:
- Optics express. - 2009
Electricity
Electronic Data Processing
Glass
Light
Metals
Models, Theoretical
Nanotechnology
Normal Distribution
Optics and Photonics
Quantum Theory
Silver
Surface Plasmon Resonance
English
We study the interaction of focused radially-polarized light with metal nanospheres. By expanding the electromagnetic field in terms of multipoles, we gain insight on the excitation of localized surface plasmon-polariton resonances in the nanoparticle. We show that focused radially-polarized beams offer more opportunities than a focused plane wave or a Gaussian beam for tuning the near- and far-field system response. These results find applications in nano-optics, optical tweezers, and optical data storage.
- Language
-
- English
- Open access status
- green
- Identifiers
-
- DOI 10.1364/oe.17.000117
- PMID 19129879
- Persistent URL
- https://folia.unifr.ch/global/documents/207996
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