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Title: Giant nonlinearity in a superconducting sub-terahertz metamaterial
Authors: Savinov, V.
Delfanazari, K.
Fedotov, V. A.
Zheludev, Nikolay I.
Keywords: Metamaterials
Issue Date: 2016
Source: Savinov, V., Delfanazari, K., Fedotov, V. A., & Zheludev, N. I. (2016). Giant nonlinearity in a superconducting sub-terahertz metamaterial. Applied Physics Letters, 108(10), 101107-.
Series/Report no.: Applied Physics Letters
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∼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/cm.
ISSN: 0003-6951
DOI: 10.1063/1.4943649
Schools: School of Physical and Mathematical Sciences 
Research Centres: Centre for Disruptive Photonic Technologies (CDPT) 
Rights: © 2016 AIP Publishing LLC. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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