Scattering From Dielectric Metasurfaces in Optical and Microwave Ranges

Metasurfaces composed of cylindrical dielectric resonators, responding either in optical or microwave ranges, are investigated with the goal of clarifying common features of their electromagnetic responses and their transformations at variations of array lattice constants and resonator heights. It i...

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Bibliographic Details
Published in:IEEE photonics journal 2019-06, Vol.11 (3), p.1-7
Main Authors: Jamilan, Saeid, Gandji, Navid P., Semouchkin, George, Safari, Fatemeh, Semouchkina, Elena
Format: Article
Language:English
Subjects:
Dielectric metasurfaces
dipolar resonances
Lattice parameters
Lattices
Metasurfaces
Microwave photonics
Microwaves
Optical resonators
Optical scattering
Resonant frequency
Resonators
scattering
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Summary:Metasurfaces composed of cylindrical dielectric resonators, responding either in optical or microwave ranges, are investigated with the goal of clarifying common features of their electromagnetic responses and their transformations at variations of array lattice constants and resonator heights. It is found that occurrence of dipolar electric resonances in dense metasurfaces is accompanied by full transmission without relation to overlapping of two dipolar resonances. Since electric resonances in dense metasurfaces experience strong coupling, these structures could not be considered as homogenized media of identical meta-atoms. We demonstrate the possibility of scaling metasurfaces, in order to substitute challenging optical experiments by experiments at microwaves.
ISSN:1943-0655
1943-0655
1943-0647
DOI:10.1109/JPHOT.2019.2908307