# Generalized magnetic mirrors

## TL;DR

This paper introduces a generalized concept of magnetic mirrors achieved through electric resonances, expanding the design possibilities beyond traditional magnetic dipole excitation, with practical demonstrations in dielectric wire arrays.

## Contribution

It reveals that electric resonances of higher orders can be used to realize magnetic mirrors, broadening the understanding of resonant multipolar excitations in photonics.

## Key findings

- Electric resonances can produce magnetic mirrors.
- Demonstrated generalized mirrors in dielectric wire arrays.
- Electric mirrors can be achieved via magnetic resonances.

## Abstract

We propose generalized magnetic mirrors that can be achieved by excitations of sole electric resonances. Conventional approaches to obtain magnetic mirrors rely heavily on exciting the fundamental magnetic dipoles, whereas here we reveal that besides magnetic resonances, electric resonances of higher orders can be also employed to obtain highly efficient magnetic mirrors. Based on the electromagnetic duality, it is also shown that electric mirrors can be achieved by exciting magnetic resonances. We provide direct demonstrations of the generalized mirrors proposed in a simple system of one-dimensional periodic array of all-dielectric wires, which may shed new light to many advanced fields of photonics related to resonant multipolar excitations and interferences.