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Giant nonlinearity in a superconducting sub-terahertz metamaterial

Giant nonlinearity in a superconducting sub-terahertz metamaterial
Giant nonlinearity in a superconducting sub-terahertz metamaterial
We report a superconducting sub-THz metamaterial operating in a CW-regime, which exhibits a record-breaking resonant third-order nonlinearity with effective n2 ~ 10cm2/W. The nonlinear response is caused by the radiation-induced resistive heating, suppressing the superconductivity in the nano-scale constrictions of the structure's meta-molecules. The nonlinearity has a relaxation time of 25µs and leads to a substantial change of the amplitude and phase of the transmitted radiation at intensities of only 500µW/cm2.
0003-6951
1-4
Savinov, V.
147c7954-4636-4438-a305-cd78539f7c0a
Delfanazari, K.
e538911f-2398-4d3f-952f-ff2d908213b0
Fedotov, V.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Savinov, V.
147c7954-4636-4438-a305-cd78539f7c0a
Delfanazari, K.
e538911f-2398-4d3f-952f-ff2d908213b0
Fedotov, V.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Savinov, V., Delfanazari, K., Fedotov, V. and Zheludev, N. (2016) Giant nonlinearity in a superconducting sub-terahertz metamaterial. Applied Physics Letters, 108 (101107), 1-4. (doi:10.1063/1.4943649).

Record type: Article

Abstract

We report a superconducting sub-THz metamaterial operating in a CW-regime, which exhibits a record-breaking resonant third-order nonlinearity with effective n2 ~ 10cm2/W. The nonlinear response is caused by the radiation-induced resistive heating, suppressing the superconductivity in the nano-scale constrictions of the structure's meta-molecules. The nonlinearity has a relaxation time of 25µs and leads to a substantial change of the amplitude and phase of the transmitted radiation at intensities of only 500µW/cm2.

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Submitted date: 1 December 2015
Accepted/In Press date: 28 February 2016
Published date: 10 March 2016
Related URLs:
Organisations: Optoelectronics Research Centre
Learn more about Optoelectronics Research Centre research

Identifiers

Local EPrints ID: 390345
URI: http://eprints.soton.ac.uk/id/eprint/390345
DOI: doi:10.1063/1.4943649
ISSN: 0003-6951
PURE UUID: 6754f661-a1bc-4144-9209-783477160682
ORCID for V. Savinov: ORCID iD orcid.org/0000-0001-7203-7222
ORCID for N. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

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Date deposited: 24 Mar 2016 11:56
Last modified: 15 Mar 2024 05:26

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Contributors

Author: V. Savinov ORCID iD
Author: K. Delfanazari
Author: V. Fedotov
Author: N. Zheludev ORCID iD

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