High-uniformity, high-performance double material dielectric diffractive metagratings



High-uniformity, high-performance double material dielectric diffractive metagratings

High-uniformity, high-performance double material dielectric diffractive metagratings
Research Paper / Metamaterials'2020 / Sep 2020 / Light Field, Optics

In this work we propose a solution for the creation of a nanojet focusing component based on a combination of two dielectric materials capable of managing the position of the focused beam in the near zone. We demonstrate that the double-material design of the elements of metagratings can be used to change its diffraction properties improving the diffraction efficiency and diffraction uniformity.