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Switchable chiral mirrors

Switchable chiral mirrors
Switchable chiral mirrors
Mirrors are widely used for redirection of electromagnetic waves in optical systems, making them arguably the most irreplaceable optical component. Metamaterial-based chiral mirrors, composed of a 2D-chiral planar metallic structure backed by a conventional mirror, reflect one circular polarization without changing its handedness, while absorbing the other. Here we demonstrate three types of switchable chiral mirror. We realize switching from a chiral mirror to either a conventional mirror, a handedness-preserving mirror, or a chiral mirror of opposite handedness. These advances are underpinned by switching the handedness of 2D-chiral metamaterial and the associated effect of circular conversion dichroism, which we report here for the first time. Switching is achieved by exploiting the temperature-activated dielectric-to-metal phase transition of vanadium dioxide to modify the symmetry and chirality of the metamaterial’s resonators. Current distributions explain the temperature-controlled optical properties by handedness-selective excitation of reflective electric dipole and absorbing magnetic dipole modes.
2195-1071
Liu, Meng
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Plum, Eric
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Li, Hua
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Duan, Siyu
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Li, Shaoxian
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Xu, Quan
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Zhang, Xueqian
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Zhang, Caihong
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Zou, Chongwen
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Jin, Biaobing
80795e5a-622d-4e33-8d40-e88c650613d2
Han, Jiaguang
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Zhang, Weili
e7aadbd4-230f-4a39-8b06-9aaef4183de0
Liu, Meng
a6d742bd-60cd-4e91-8752-add90d0bf935
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Li, Hua
457a24e4-0fef-4155-9960-79fb15cdcd2f
Duan, Siyu
a1e9b4fd-62c1-48dc-811d-e7786cdac054
Li, Shaoxian
b3363a98-efdd-49de-9bd1-4af538ea843b
Xu, Quan
b97a36eb-cace-496b-b45e-90cf42a110d8
Zhang, Xueqian
94e50528-12a0-414a-b789-423815daa8e6
Zhang, Caihong
405b1efb-f1ce-4450-b5b0-679f9776a57a
Zou, Chongwen
a95478d0-f128-45be-98f7-059d2b083299
Jin, Biaobing
80795e5a-622d-4e33-8d40-e88c650613d2
Han, Jiaguang
4591e2ce-9804-45f2-907a-a915386b3922
Zhang, Weili
e7aadbd4-230f-4a39-8b06-9aaef4183de0

Liu, Meng, Plum, Eric, Li, Hua, Duan, Siyu, Li, Shaoxian, Xu, Quan, Zhang, Xueqian, Zhang, Caihong, Zou, Chongwen, Jin, Biaobing, Han, Jiaguang and Zhang, Weili (2020) Switchable chiral mirrors. Advanced Optical Materials. (doi:10.1002/adom.202000247).

Record type: Article

Abstract

Mirrors are widely used for redirection of electromagnetic waves in optical systems, making them arguably the most irreplaceable optical component. Metamaterial-based chiral mirrors, composed of a 2D-chiral planar metallic structure backed by a conventional mirror, reflect one circular polarization without changing its handedness, while absorbing the other. Here we demonstrate three types of switchable chiral mirror. We realize switching from a chiral mirror to either a conventional mirror, a handedness-preserving mirror, or a chiral mirror of opposite handedness. These advances are underpinned by switching the handedness of 2D-chiral metamaterial and the associated effect of circular conversion dichroism, which we report here for the first time. Switching is achieved by exploiting the temperature-activated dielectric-to-metal phase transition of vanadium dioxide to modify the symmetry and chirality of the metamaterial’s resonators. Current distributions explain the temperature-controlled optical properties by handedness-selective excitation of reflective electric dipole and absorbing magnetic dipole modes.

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Switchable Chiral Mirrors - Accepted Manuscript - Accepted Manuscript
Restricted to Repository staff only until 7 May 2021.
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More information

Accepted/In Press date: 15 April 2020
e-pub ahead of print date: 7 May 2020

Identifiers

Local EPrints ID: 439530
URI: http://eprints.soton.ac.uk/id/eprint/439530
ISSN: 2195-1071
PURE UUID: f1cea61b-6ab1-4bca-abd1-20206ea0c74b
ORCID for Eric Plum: ORCID iD orcid.org/0000-0002-1552-1840

Catalogue record

Date deposited: 24 Apr 2020 16:45
Last modified: 21 May 2020 00:31

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Contributors

Author: Meng Liu
Author: Eric Plum ORCID iD
Author: Hua Li
Author: Siyu Duan
Author: Shaoxian Li
Author: Quan Xu
Author: Xueqian Zhang
Author: Caihong Zhang
Author: Chongwen Zou
Author: Biaobing Jin
Author: Jiaguang Han
Author: Weili Zhang

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