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

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

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
90 Downloads (Pure)

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.

Original languageEnglish
Article number205136
Number of pages7
JournalPhysical Review B
Volume100
Issue number20
DOIs
Publication statusPublished - 25 Nov 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • NANO-OPTICS
  • REFLECTION
  • METASURFACES

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