Metal nanoparticles in strongly confined beams: transmission, reflection and absorption
Optics
2009-05-13 v1
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.
Keywords
Cite
@article{arxiv.0901.4572,
title = {Metal nanoparticles in strongly confined beams: transmission, reflection and absorption},
author = {Nassiredin Mojarad and Gert Zumofen and Vahid Sandoghdar and Mario Agio},
journal= {arXiv preprint arXiv:0901.4572},
year = {2009}
}
Comments
6 pages, 4 figures