Concept of non-periodic metasurfaces based on positional gradients applied to IR-flat lenses
Language
en
Article de revue
This item was published in
Optical Materials Express. 2017, vol. 7, n° 7, p. 2346-2351
OSA pub
English Abstract
We describe a theoretical study of gradient metasurfaces that – unlike most theoretical designs requiring advanced fabrication techniques – could easily be produced by a simple patterning method, templated microlens ...Read more >
We describe a theoretical study of gradient metasurfaces that – unlike most theoretical designs requiring advanced fabrication techniques – could easily be produced by a simple patterning method, templated microlens lithography (TEMPL). We show here that positional gradients of identical microstructures can lead to a gradient of phase lag across the metasurface. Using a radial gradient in the pitch of a hexagonal array of identical microfabricated resonators, one could thus produce gradient metasurfaces with the ability to focus infrared light. We provide illustrative examples of devices and compare their theoretical capabilities.Read less <
ANR Project
Initiative d'excellence de l'Université de Bordeaux
Origin
Hal imported