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arXiv · 1906.09636

Super-resonances in microspheres: extreme effects in field localization

Zengbo Wang·Boris Luk'yanchuk·Liyang Yue·Ramon Paniagua-Dominguez·Bing Yan·James Monks·Oleg V. Minin·Igor V. Minin·Sumei Huang·Andrey A. Fedyanin
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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.

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Zengbo Wang, Boris Luk'yanchuk, Liyang Yue, Ramon Paniagua-Dominguez, Bing Yan, James Monks, Oleg V. Minin, Igor V. Minin, Sumei Huang, Andrey A. Fedyanin. 2019-06-23. Super-resonances in microspheres: extreme effects in field localization. https://arxiv.org/abs/1906.09636

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