Transverse Kerker effect in all-dielectric spheroidal particles

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.

О Решении Проблемы Рассеяния Света Сфероидами Для TM- И Те-Мод При Использовании Сфероидального Базиса

“…Представление несферических рассеивателей сфероидами является подходом, применяемым в разных областях науки, например, в нанооптике [1], медицине [2], лабораторном анализе [3], микроволновых экспериментах [4] и т. д. Подход часто использовался в оптике атмосферы [5][6][7][8] и находит широкое применение в современной астрофизике из-за недостаточной пока информации о форме и структуре космических пылинок [9][10][11][12][13].…”

On solution of the light scattering problem for a spheroid in the TM and TE modes when using spheroidal bases

“…The representation of actual scatterer by spheroids is an approach widely used in various fields of science: for example, in atmospheric optics [1], astronomy [2], medicine [3], nanooptics [4], laboratory analysis [5][6][7][8], etc. The spheroidal model is especially often used in modern astrophysics due to the lack of information about the shape of non-spherical cosmic dust particles [9][10][11][12][13].…”