Metal nanoparticles in strongly confined beams: transmission, reflection and absorption

Details Metal nanoparticles in strongly confined beams: transmission, reflection and absorption Metal nanoparticles in strongly confined beams: transmission, reflection and absorption

2009-01-28

arxiv.org/abs/0901.4572v1

JEOS Rap. Publ. 4, 09014 (2009)

Physics

Optics

6 pages, 4 figures

Scientific paper

10.2971/jeos.2009.09014

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 Ref. [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.

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