https://doi.org/10.1051/epjconf/202328705035
Figure of merit for design of ε-near-zero metamaterials with enhanced Kerrtype nonlinearities
Department of Physics and Astronomy, NanoStructures Group (NSG), University of Padova, via Marzolo 8, 35131 Padova, Italy
* e-mail: francesca.dodici@phd.unipd.it
Published online: 18 October 2023
Metamaterials are artificial media designed to display properies going beyond those of ordinary materials. Particularly interesting are ε-near-zero (ENZ) media with real part of the permittivity going to zero in a certain spectral range. Examples of ENZ metamaterials are metal dielectric multilayers, which allow to tune the position of the ENZ wavelength depending on their composition and which have been found to have enhanced Kerr-type nonlinearities, i.e. nonlinear absorption and nonlinear refraction. In this work we define a figure of merit for the design of multilayer metamaterials with strong Kerr-type nonlinearities and compare our predictions with both simulations and experimental results.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
