Near unity transmission and full phase control with asymmetric Huygens’ dielectric metasurfaces for holographic projections

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Near unity transmission and full phase control with asymmetric Huygens’ dielectric metasurfaces for holographic projections
Title:
Near unity transmission and full phase control with asymmetric Huygens’ dielectric metasurfaces for holographic projections
Journal Title:
Applied Optics
Publication Date:
08 November 2021
Citation:
Liang, X., Yu, Y., Xu, X., Fu, Y. H., Valuckas, V., Paniagua-Dominguez, R., & Kuznetsov, A. I. (2021). Near unity transmission and full phase control with asymmetric Huygens’ dielectric metasurfaces for holographic projections. Applied Optics, 61(5), B164. https://doi.org/10.1364/ao.444728
Abstract:
Huygens’ metasurfaces are highly transparent arrays of nanostructures that enable phase front manipulation. This is achieved by simultaneous excitation of electric dipole (ED) and magnetic dipole (MD) resonances with equal amplitudes and phases in the constituent meta-atoms. In usual designs, the size changes of the meta-atoms, necessary to map the phase front, can detune the overlapping of ED and MD resonances, decreasing the transmission and limiting the operating bandwidth. In this report, we demonstrate that ED and MD resonances can be almost perfectly tuned together over a large wavelength range, keeping their spectral overlap, in a Silicon metasurface by using anisotropic meta-atoms. In particular, we show near-unity transmission (>95% in simulations) and 2π phase control in a wavelength range from 760nm to 815nm using cuboidal nanoantennas. Using this concept, we also experimentally demonstrate clear reconstruction from holograms of a single metasurface spanning the near infrared and the whole visible spectral range.
License type:
Publisher Copyright
Funding Info:
This research / project is supported by the AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH - A*STAR RIE2020 AME Programmatic Funding
Grant Reference no. : A18A7b0058

This research / project is supported by the National Research Foundation of Singapore - NRF Investigatorship
Grant Reference no. : NRFI2017-01
Description:
© 2021 Optica Publishing Group. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
ISSN:
2155-3165
1559-128X
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