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Thermal fluctuations of the optical properties of nanomechanical photonic metamaterials

Thermal fluctuations of the optical properties of nanomechanical photonic metamaterials
Thermal fluctuations of the optical properties of nanomechanical photonic metamaterials

The combination of optical and mechanical resonances offers strong hybrid nonlinearities, bistability, and the ability to efficiently control the optical response of nanomechanical photonic metamaterials with electric and magnetic field. While optical resonances can be characterized in routine transmission and reflection experiments, mapping the high-frequency mechanical resonances of complex metamaterial structures is challenging. Here, it is reported that high-frequency time-domain fluctuations in the optical transmission and reflection spectra of nanomechanical photonic metamaterials are directly linked to thermal motion of their components and can give information on the fundamental frequencies and damping of the mechanical modes. This is demonstrated by analyzing time-resolved fluctuations in the transmission and reflection of dielectric and plasmonic nanomembrane metamaterials at room temperature and low ambient gas pressure. These measurements reveal complex mechanical responses, understanding of which is essential for optimization of such functional photonic materials. At room temperature the magnitude of the observed metamaterial transmission and reflection fluctuations is of order 0.1% but may exceed 1% at optical resonances.

Brownian motion, metamaterials, metasurfaces, nanomechanics, photonics
2195-1071
Li, Jinxiang
736c69a2-23ca-474f-a908-960235118fa8
Papas, Dimitrios
cff74106-c632-4f06-a2ff-55b204fab699
Liu, Tongjun
724ead78-26b2-44a0-a490-d5866f83bbeb
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Li, Jinxiang
736c69a2-23ca-474f-a908-960235118fa8
Papas, Dimitrios
cff74106-c632-4f06-a2ff-55b204fab699
Liu, Tongjun
724ead78-26b2-44a0-a490-d5866f83bbeb
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6

Li, Jinxiang, Papas, Dimitrios, Liu, Tongjun, Ou, Jun-Yu, MacDonald, Kevin F., Plum, Eric and Zheludev, Nikolai (2021) Thermal fluctuations of the optical properties of nanomechanical photonic metamaterials. Advanced Optical Materials, 10, [2101591]. (doi:10.1002/adom.202101591).

Record type: Article

Abstract

The combination of optical and mechanical resonances offers strong hybrid nonlinearities, bistability, and the ability to efficiently control the optical response of nanomechanical photonic metamaterials with electric and magnetic field. While optical resonances can be characterized in routine transmission and reflection experiments, mapping the high-frequency mechanical resonances of complex metamaterial structures is challenging. Here, it is reported that high-frequency time-domain fluctuations in the optical transmission and reflection spectra of nanomechanical photonic metamaterials are directly linked to thermal motion of their components and can give information on the fundamental frequencies and damping of the mechanical modes. This is demonstrated by analyzing time-resolved fluctuations in the transmission and reflection of dielectric and plasmonic nanomembrane metamaterials at room temperature and low ambient gas pressure. These measurements reveal complex mechanical responses, understanding of which is essential for optimization of such functional photonic materials. At room temperature the magnitude of the observed metamaterial transmission and reflection fluctuations is of order 0.1% but may exceed 1% at optical resonances.

Text
Thermal fluctuations of optical properties of nanomechanical photonic metamaterials - accepted version - Accepted Manuscript
Available under License Creative Commons Attribution.
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Accepted/In Press date: 17 November 2021
e-pub ahead of print date: 22 December 2021
Published date: 22 December 2021
Additional Information: Funding Information: J.L. and D.P. contributed equally to this work. This work was supported by the UK Engineering and Physical Sciences Research Council (Grant Nos. EP/M009122/1 and EP/T02643X/1), Singapore Ministry of Education (Grant No. MOE2016‐T3‐1‐006 (S)), and China Scholarship Council (201708440254, 201806160012).
Keywords: Brownian motion, metamaterials, metasurfaces, nanomechanics, photonics

Identifiers

Local EPrints ID: 452432
URI: http://eprints.soton.ac.uk/id/eprint/452432
ISSN: 2195-1071
PURE UUID: a55b06a6-a75d-4db4-91e6-1ae83ae43335
ORCID for Jinxiang Li: ORCID iD orcid.org/0000-0003-2792-7773
ORCID for Dimitrios Papas: ORCID iD orcid.org/0000-0001-7275-1661
ORCID for Tongjun Liu: ORCID iD orcid.org/0000-0003-4931-1734
ORCID for Jun-Yu Ou: ORCID iD orcid.org/0000-0001-8028-6130
ORCID for Kevin F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976
ORCID for Eric Plum: ORCID iD orcid.org/0000-0002-1552-1840
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 09 Dec 2021 18:25
Last modified: 28 Apr 2022 05:56

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Contributors

Author: Jinxiang Li ORCID iD
Author: Dimitrios Papas ORCID iD
Author: Tongjun Liu ORCID iD
Author: Jun-Yu Ou ORCID iD
Author: Kevin F. MacDonald ORCID iD
Author: Eric Plum ORCID iD

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