All-dielectric metamirror for independent and asymmetric wave-front control
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2019-11-25
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Mcode
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Language
en
Pages
7
Series
Physical Review B, Volume 100, issue 20
Abstract
We report on the design and the numerical and experimental characterization of an all-dielectric reflecting focusing metasurface (metamirror) which does not have a back reflector, but effectively reflects incident waves with the desired reflection phase gradient. The profile of the reflection phase can be tuned independently for both sides of the single-layer subwavelength-thick metamirror by properly selecting dimensions of its dielectric inclusions. Such a feature stems from the bianisotropic omega properties of the inclusions. To demonstrate independent control of the reflection phase, we have designed a metamirror focusing normally incident plane waves at different focal distances being illuminated from the opposite sides. The proposed two-sided metamirror can find applications in antennas, diffraction gratings, and complex holograms. The absence of conducting elements makes it a perfect candidate for optical applications requiring asymmetric wave-front control.Description
Keywords
NANO-OPTICS, REFLECTION, METASURFACES
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Citation
Odit , M A , Sayanskiy , A D , Asadchy , V , Kapitanova , P , Tretyakov , S A & Belov , P A 2019 , ' All-dielectric metamirror for independent and asymmetric wave-front control ' , Physical Review B , vol. 100 , no. 20 , 205136 . https://doi.org/10.1103/PhysRevB.100.205136