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Reflective chiral meta-holography: multiplexing holograms for circularly polarized waves

Reflective chiral meta-holography: multiplexing holograms for circularly polarized waves
Reflective chiral meta-holography: multiplexing holograms for circularly polarized waves
By allowing almost arbitrary distributions of amplitude and phase of electromagnetic waves to be generated by a layer of sub-wavelength-size unit cells, metasurfaces have given rise to the field of meta-holography. However, holography with circularly polarized waves remains complicated as the achiral building blocks of existing meta-holograms inevitably contribute to holographic images generated by both left-handed and right-handed waves. Here, we demonstrate how planar chirality enables the fully independent realization of high-efficiency meta-holograms for one circular polarization or the other. Such circular-polarization-selective meta-holograms are based on chiral building blocks that reflect either left-handed or right-handed circularly polarized waves with an orientation-dependent phase. Using terahertz waves, we experimentally demonstrate that this allows the straightforward design of reflective phase meta-holograms, where the use of alternating structures of opposite handedness yields independent holographic images for circularly polarized waves of opposite handedness with negligible polarization cross-talk.
metamaterial, holography, multiplexing holograms, chirality, planar chirality, 2D chirality, terahertz
1-9
Wang, Qiu
1eabb57a-df00-4c27-a981-757271eb72f7
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Yang, Quanlong
a9e4975a-c818-4096-b893-ca9840cb1380
Zhang, Xueqian
e551b9e6-0e46-4266-afc0-f5c81ae6ccb6
Xu, Quan
b97a36eb-cace-496b-b45e-90cf42a110d8
Xu, Yuehong
671e4a99-3b5e-4806-8516-3af431c737ac
Han, Jiaguang
4591e2ce-9804-45f2-907a-a915386b3922
Zhang, Weili
e7aadbd4-230f-4a39-8b06-9aaef4183de0
Wang, Qiu
1eabb57a-df00-4c27-a981-757271eb72f7
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Yang, Quanlong
a9e4975a-c818-4096-b893-ca9840cb1380
Zhang, Xueqian
e551b9e6-0e46-4266-afc0-f5c81ae6ccb6
Xu, Quan
b97a36eb-cace-496b-b45e-90cf42a110d8
Xu, Yuehong
671e4a99-3b5e-4806-8516-3af431c737ac
Han, Jiaguang
4591e2ce-9804-45f2-907a-a915386b3922
Zhang, Weili
e7aadbd4-230f-4a39-8b06-9aaef4183de0

Wang, Qiu, Plum, Eric, Yang, Quanlong, Zhang, Xueqian, Xu, Quan, Xu, Yuehong, Han, Jiaguang and Zhang, Weili (2018) Reflective chiral meta-holography: multiplexing holograms for circularly polarized waves. Light: Science & Applications, 7, 1-9, [25]. (doi:10.1038/s41377-018-0019-8).

Record type: Article

Abstract

By allowing almost arbitrary distributions of amplitude and phase of electromagnetic waves to be generated by a layer of sub-wavelength-size unit cells, metasurfaces have given rise to the field of meta-holography. However, holography with circularly polarized waves remains complicated as the achiral building blocks of existing meta-holograms inevitably contribute to holographic images generated by both left-handed and right-handed waves. Here, we demonstrate how planar chirality enables the fully independent realization of high-efficiency meta-holograms for one circular polarization or the other. Such circular-polarization-selective meta-holograms are based on chiral building blocks that reflect either left-handed or right-handed circularly polarized waves with an orientation-dependent phase. Using terahertz waves, we experimentally demonstrate that this allows the straightforward design of reflective phase meta-holograms, where the use of alternating structures of opposite handedness yields independent holographic images for circularly polarized waves of opposite handedness with negligible polarization cross-talk.

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More information

Accepted/In Press date: 11 April 2018
e-pub ahead of print date: 27 June 2018
Published date: 2018
Keywords: metamaterial, holography, multiplexing holograms, chirality, planar chirality, 2D chirality, terahertz

Identifiers

Local EPrints ID: 421794
URI: http://eprints.soton.ac.uk/id/eprint/421794
PURE UUID: 2ec08200-4055-4ca6-8c90-e246dfed26e7
ORCID for Eric Plum: ORCID iD orcid.org/0000-0002-1552-1840

Catalogue record

Date deposited: 27 Jun 2018 16:31
Last modified: 17 Dec 2019 01:42

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Contributors

Author: Qiu Wang
Author: Eric Plum ORCID iD
Author: Quanlong Yang
Author: Xueqian Zhang
Author: Quan Xu
Author: Yuehong Xu
Author: Jiaguang Han
Author: Weili Zhang

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