全介质椭球形粒子中的横向克尔效应。

Transverse Kerker effect in all-dielectric spheroidal particles.

作者信息

Bukharin Mikhail M, Pecherkin Vladimir Ya, Ospanova Anar K, Il'in Vladimir B, Vasilyak Leonid M, Basharin Alexey A, Luk'yanchuk Boris

机构信息

National University of Science and Technology "MISiS", Moscow, 119049, Russia.

Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, 125412, Russia.

出版信息

Sci Rep. 2022 May 14;12(1):7997. doi: 10.1038/s41598-022-11733-4.

DOI:10.1038/s41598-022-11733-4

PMID:35568693

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9107494/

Abstract

Kerker effect is one of the unique phenomena in modern electrodynamics. Due to overlapping of electric and magnetic dipole moments, all-dielectric particles can be invisible in forward or backward directions. In our paper we propose new conditions between resonantly excited electric dipole and magnetic quadrupole in ceramic high index spheroidal particles for demonstrating transverse Kerker effect. Moreover, we perform proof-of-concept microwave experiment and demonstrate dumbbell radiation pattern with suppressed scattering in both forward and backward directions and enhanced scattering in lateral directions. Our concept is promising for future planar lasers, nonreflected metasurface and laterally excited waveguides and nanoantennas.

摘要

克尔效应是现代电动力学中的独特现象之一。由于电偶极矩和磁偶极矩的重叠，全电介质粒子在向前或向后方向上可能不可见。在我们的论文中，我们提出了陶瓷高折射率椭球体粒子中共振激发电偶极子和磁四极子之间的新条件，以证明横向克尔效应。此外，我们进行了概念验证微波实验，并展示了哑铃形辐射方向图，其在向前和向后方向上的散射受到抑制，而在横向方向上的散射增强。我们的概念对于未来的平面激光器、无反射超表面以及横向激发的波导和纳米天线具有广阔前景。