CUED Publications database

Giant nonlinearity in a superconducting sub-terahertz metamaterial

Savinov, V and Delfanazari, K and Fedotov, VA and Zheludev, NI (2016) Giant nonlinearity in a superconducting sub-terahertz metamaterial. Applied Physics Letters, 108. ISSN 0003-6951

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© 2016 AIP Publishing LLC. We report a superconducting sub-THz metamaterial operating in a CW-regime, which exhibits a record-breaking resonant third-order nonlinearity with effective n2∼10 cm2/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 25 μs and leads to a substantial change of the amplitude and phase of the transmitted radiation at intensities of only 500 μW/cm2.

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:45
Last Modified: 24 Nov 2020 09:43
DOI: 10.1063/1.4943649