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Gigahertz nano-optomechanical resonances in a dielectric SiC-membrane metasurface array

Gigahertz nano-optomechanical resonances in a dielectric SiC-membrane metasurface array
Gigahertz nano-optomechanical resonances in a dielectric SiC-membrane metasurface array

Optically and vibrationally resonant nanophotonic devices are of particular importance for their ability to enhance optomechanical interactions, with applications in nanometrology, sensing, nano-optical control of light, and optomechanics. Here, the optically resonant excitation and detection of gigahertz vibrational modes are demonstrated in a nanoscale metasurface array fabricated on a suspended SiC membrane. With the design of the main optical and vibrational modes to be those of the individual metamolecules, resonant excitation and detection are achieved by making use of direct mechanisms for optomechanical coupling. Ultrafast optical pump-probe studies reveal a multimodal gigahertz vibrational response corresponding to the mechanical modes of the suspended nanoresonators. Wavelength and polarization dependent studies reveal that the excitation and detection of vibrations takes place through the metasurface optical modes. The dielectric metasurface pushes the modulation speed of optomechanical structures closer to their theoretical limits and presents a potential for compact and easily fabricable optical components for photonic applications.

Metamaterials Nanophotonics, Metasurfaces, Optomechanics, Pump-probe, Ultrafast spectroscopy
1530-6984
4563 - 4569
Ajia, Idris A.
6c3d6040-2701-43c9-a7d1-a55ba45ab510
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
Singh, H. Johnson
02620e1e-88b7-4f50-a281-f88e6da55916
Chen-Sverre, Theo
67af4356-7ef4-44e7-8458-d3d533225422
Liu, Tongjun
724ead78-26b2-44a0-a490-d5866f83bbeb
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
Ajia, Idris A.
6c3d6040-2701-43c9-a7d1-a55ba45ab510
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
Singh, H. Johnson
02620e1e-88b7-4f50-a281-f88e6da55916
Chen-Sverre, Theo
67af4356-7ef4-44e7-8458-d3d533225422
Liu, Tongjun
724ead78-26b2-44a0-a490-d5866f83bbeb
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9

Ajia, Idris A., Ou, Jun-Yu, Singh, H. Johnson, Chen-Sverre, Theo, Liu, Tongjun, Zheludev, Nikolay I. and Muskens, Otto L. (2021) Gigahertz nano-optomechanical resonances in a dielectric SiC-membrane metasurface array. Nano Letters, 21 (11), 4563 - 4569. (doi:10.1021/acs.nanolett.1c00205).

Record type: Article

Abstract

Optically and vibrationally resonant nanophotonic devices are of particular importance for their ability to enhance optomechanical interactions, with applications in nanometrology, sensing, nano-optical control of light, and optomechanics. Here, the optically resonant excitation and detection of gigahertz vibrational modes are demonstrated in a nanoscale metasurface array fabricated on a suspended SiC membrane. With the design of the main optical and vibrational modes to be those of the individual metamolecules, resonant excitation and detection are achieved by making use of direct mechanisms for optomechanical coupling. Ultrafast optical pump-probe studies reveal a multimodal gigahertz vibrational response corresponding to the mechanical modes of the suspended nanoresonators. Wavelength and polarization dependent studies reveal that the excitation and detection of vibrations takes place through the metasurface optical modes. The dielectric metasurface pushes the modulation speed of optomechanical structures closer to their theoretical limits and presents a potential for compact and easily fabricable optical components for photonic applications.

Text
AjiaNanoLetters2021 - Accepted Manuscript
Restricted to Repository staff only until 20 May 2022.
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More information

e-pub ahead of print date: 20 May 2021
Published date: 21 May 2021
Additional Information: Funding Information: This work was supported by the Engineering and Physical Sciences Research Council (Grants No. EP/S008764/1, EP/M009122/1 and EP/T02643 X/1) and the Singapore Ministry of Education (Grant No. MOE2016-T3-1-006). H.J.S. acknowledges support by the Leverhulme Trust through project RPG-2018-251. All data supporting this study are openly available from the University of Southampton repository (DOI: 10.5258/SOTON/D1812). Funding Information: This work was supported by the Engineering and Physical Sciences Research Council (Grants No. EP/S008764/1, EP/M009122/1 and EP/T02643X/1) and the Singapore Ministry of Education (Grant No. MOE2016-T3-1-006). H.J.S. acknowledges support by the Leverhulme Trust through project RPG-2018-251. All data supporting this study are openly available from the University of Southampton repository (DOI: 10.5258/SOTON/D1812). Publisher Copyright: © Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
Keywords: Metamaterials Nanophotonics, Metasurfaces, Optomechanics, Pump-probe, Ultrafast spectroscopy

Identifiers

Local EPrints ID: 449710
URI: http://eprints.soton.ac.uk/id/eprint/449710
ISSN: 1530-6984
PURE UUID: 749fbf63-dc50-46ff-abbe-db7bde9f9a1a
ORCID for Idris A. Ajia: ORCID iD orcid.org/0000-0003-3156-4426
ORCID for Jun-Yu Ou: ORCID iD orcid.org/0000-0001-8028-6130
ORCID for Tongjun Liu: ORCID iD orcid.org/0000-0003-4931-1734
ORCID for Nikolay I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636
ORCID for Otto L. Muskens: ORCID iD orcid.org/0000-0003-0693-5504

Catalogue record

Date deposited: 11 Jun 2021 16:31
Last modified: 08 Sep 2021 02:01

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Contributors

Author: Idris A. Ajia ORCID iD
Author: Jun-Yu Ou ORCID iD
Author: Theo Chen-Sverre
Author: Tongjun Liu ORCID iD
Author: Otto L. Muskens ORCID iD

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