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arXiv · 2204.05120

Influence of the Environment on the Effect of Super Resonance in Mesoscale Dielectric Spheres

Igor V. Minin·Song Zhou·Oleg V. Minin
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Abstract

Dielectric mesoscale spheres have aroused strong interest because of their potential to localize light at deep subwavelength volume and to yield extremal internal magnetic and/or electric field enhancements. Recently, we showed that such particle could support high-order Mie resonance modes with giant field localization and enhancement. Optimizing the internal fields appears as a key challenge for enhancing wave matter interactions in dielectric mesoscale particles. However, a dielectric particle is always located in some medium, and not in a vacuum. Moreover, the question is how much the environment medium affects the internal field intensities enhancement in the super-resonance effect. Based on Mie theory we show for the first time that the presence of the environment leads to a significant decrease in the intensity of the field in the particle. Thus, the study of the effect of super-resonance becomes meaningless without taking into account the environment. However, a greater enhancement of the internal field is found for the blue-shifted Mie size parameter of the sphere when the particle, for example, is in air rather than in vacuum.

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Igor V. Minin, Song Zhou, Oleg V. Minin. 2022-04-26. Influence of the Environment on the Effect of Super Resonance in Mesoscale Dielectric Spheres. https://doi.org/10.1134/s106378502208003x

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