https://doi.org/10.1051/epjam/2022014
Research Article
Reflectionless anisotropic multilayers for both polarisations at grazing incidence
School of Physics and Astronomy, University of Exeter, EX4 4QL Exeter, UK
* e-mail: dp348@exeter.ac.uk
Received:
17
November
2021
Accepted:
8
April
2022
Published online: 7 July 2022
We find a method for designing anisotropic multilayer profiles that are reflectionless at grazing incidence, for both electromagnetic polarisations. The Helmholtz equation for grazing incidence propagation through an anisotropic multilayer can be factorised into a pair of equations of the form 
. Solutions of 
then determine two of the three principal values of the permittivity. Imposing the additional constraint of uniaxial anisotropy, we find a pair of coupled equations for the profile of both permittivity components such that neither polarisation is reflected.
© D.A. Patient and S.A.R. Horsley, Published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
