Nonlinear high-temperature superconducting terahertz metamaterials

We report the observation of a nonlinear terahertz response of split-ring resonator arrays made of high-temperature superconducting films. Intensity-dependent transmission measurements indicate that the resonance strength decreases dramatically (i.e. transient bleaching) and the resonance frequency...

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Bibliographic Details
Published inNew journal of physics Vol. 15; no. 10; pp. 105016 - 12
Main Authors Grady, Nathaniel K, Perkins, Bradford G, Hwang, Harold Y, Brandt, Nathaniel C, Torchinsky, Darius, Singh, Ranjan, Yan, Li, Trugman, Daniel, Trugman, Stuart A, Jia, Q X, Taylor, Antoinette J, Nelson, Keith A, Chen, Hou-Tong
Format Journal Article
LanguageEnglish
Published IOP Publishing 18.10.2013
Subjects
Arrays
Bleaching
Frequency shift
Metamaterials
Nonlinearity
Resonators
Superconducting films
Superconductivity
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Summary:We report the observation of a nonlinear terahertz response of split-ring resonator arrays made of high-temperature superconducting films. Intensity-dependent transmission measurements indicate that the resonance strength decreases dramatically (i.e. transient bleaching) and the resonance frequency shifts as the intensity is increased. Pump-probe measurements confirm this behaviour and reveal dynamics on the few-picosecond timescale.
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ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/15/10/105016