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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 language | English |
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Article number | 205136 |
Number of pages | 7 |
Journal | Physical Review B |
Volume | 100 |
Issue number | 20 |
DOIs | |
Publication status | Published - 25 Nov 2019 |
MoE publication type | A1 Journal article-refereed |
Keywords
- NANO-OPTICS
- REFLECTION
- METASURFACES
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Dive into the research topics of 'All-dielectric metamirror for independent and asymmetric wave-front control'. Together they form a unique fingerprint.Projects
- 1 Finished
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Transparent reflectors: Functional metasurfaces for future antenna technology
Diaz Rubio, A. (Project Member), Tretiakov, S. (Principal investigator), Tcvetkova, S. (Project Member), Albooyeh, M. (Project Member), Radi, Y. (Project Member), Asadchy, V. (Project Member), Ptitcyn, G. (Project Member) & Cuesta, F. (Project Member)
01/09/2015 → 31/08/2019
Project: Academy of Finland: Other research funding