All-dielectric metamirror for independent and asymmetric wave-front control

Tutkimustuotos: Lehtiartikkelivertaisarvioitu


  • M. A. Odit
  • A. D. Sayanskiy
  • Viktar Asadchy
  • P. Kapitanova
  • S. A. Tretyakov
  • P. A. Belov


  • ITMO University


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.


JulkaisuPhysical Review B
TilaJulkaistu - 25 marraskuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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