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arXiv · 0901.4572

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

Nassiredin Mojarad·Gert Zumofen·Vahid Sandoghdar·Mario Agio
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Abstract

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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Nassiredin Mojarad, Gert Zumofen, Vahid Sandoghdar, Mario Agio. 2009-01-28. Metal nanoparticles in strongly confined beams: transmission, reflection and absorption. https://doi.org/10.2971/jeos.2009.09014

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