Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 4, 2009
|
|
---|---|---|
Article Number | 09014 | |
Number of page(s) | 6 | |
DOI | https://doi.org/10.2971/jeos.2009.09014 | |
Published online | 10 April 2009 |
Regular papers
Metal nanoparticles in strongly confined beams: transmission, reflection and absorption
Laboratory of Physical Chemistry, ETH Zurich, 8093 Zurich, Switzerland
a nassiredin.mojarad@phys.chem.ethz.ch
b gert.zumofen@phys.chem.ethz.ch
c vahid.sandoghdar@ethz.ch
d mario.agio@phys.chem.ethz.ch
Received:
28
January
2008
We investigate the interaction of tightly focused light with the surface-plasmon-polariton resonances of metal nanospheres. In particular, we compute the scattering and absorption ratios as well as transmission and reflection coefficients. Inspired by our previous work in [1], we discuss how well a metal nanoparticle approximates a point-like dipolar radiator. We find that a 100 nm silver nanosphere is very close to such an ideal oscillator. Our results have immediate implications for single nanoparticle spectroscopy and microscopy as well as plasmonics.
Key words: metal nanoparticles / focused light / surface plasmon-polaritons / scattering and absorption
© The Author(s) 2009. All rights reserved.
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