Super-resonances in microspheres: extreme effects in field localization
Optics
2019-06-25 v1
Abstract
We reveal the existence of optical super-resonance modes supported by dielectric microspheres. These modes,with field-intensity enhancement factors on the order of 10^4-10^5, can be directly obtained from analytical calculations. In contrast to usual optical resonances, which are related to the poles of the electric and magnetic scattering amplitudes, super-resonance modes are related to the poles of the internal field coefficients, obtained for specific values of the size parameter. We also reveal the connection of these super-resonances in the generation of magnetic nanojets and of giant magnetic fields in particles with high refractive index.
Cite
@article{arxiv.1906.09636,
title = {Super-resonances in microspheres: extreme effects in field localization},
author = {Zengbo Wang and Boris Luk'yanchuk and Liyang Yue and Ramon Paniagua-Dominguez and Bing Yan and James Monks and Oleg V. Minin and Igor V. Minin and Sumei Huang and Andrey A. Fedyanin},
journal= {arXiv preprint arXiv:1906.09636},
year = {2019}
}
Comments
13 pages, 11 figures