SUPERRESONANCE EFFECT IN A MESOSCALE SPHERE WITH A LOW REFRACTIVE INDEX
V. Minin Oleg1,2, V. Minin Igor1,2, Zhou Song3
1Tomsk Polytechnic University, Tomsk, Russia
2Siberian State University of Geosystems and Technologies, Novosibirsk, Russia
3Huaiyin Institute of Technology, Huai'an, China
Keywords: high-order Fano resonance, superresonance, extreme high electromagnetic fields, subwave localization of the field
Abstract
The results of numerical simulation based on the Mie theory of the superresonance effect for a dielectric sphere with a low refractive index are presented. Water is used as a material of the mesoscale sphere. It is shown that not only the previously studied weakly dissipative mesoscale spheres made of a material with a “medium” (about 1.5) and high (more than 2) refractive index, but also a low one (about 1.3) support the high-order Fano resonance effect associated with internal Mie modes. In this case, the intensities of resonant peaks for both magnetic and electric fields in the vicinity of the poles of the sphere can reach extremely high values of the order of 106-107 for a water droplet with a Mie size parameter of about 70.
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