Enhanced Faraday rotation by dielectric metasurfaces with Bayesian shape-optimized scatterers.
Opt Lett
; 46(7): 1720-1723, 2021 Apr 01.
Article
em En
| MEDLINE
| ID: mdl-33793527
ABSTRACT
In this Letter, we demonstrate how to optimize the magneto-optic response of a Huygens metasurface composed of square arrays of all-dielectric nano-disk scatterers. We compare cylindrical and shape-modified disks. Both provide a strongly enhanced Faraday rotation that is accompanied by almost 100% transmittance. The shape modification obtained via a Bayesian optimization algorithm results in a 50% increase in the magneto-optic response compared to the best cylindrical disk, providing 15° of polarization rotation for a 260 nm thick metasurface.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
2021
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Article