Radiation-harvesting resonant superconducting sub-THz metamaterial bolometer

We demonstrate a frequency-selective energy-harvesting sub-THz superconducting bolometer. The bolometer, a two-dimensional array of connected metamaterial resonators, exploits the collective mode of the metamaterial excitation to collect incident radiation and channel it into the bolometer hot-spot...

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Bibliographic Details
Published in:Superconductor science & technology 2013-08, Vol.26 (8), p.84001-4
Main Authors: Savinov, V, Fedotov, V A, de Groot, P A J, Zheludev, N I
Format: Article
Language:English
Subjects:
Arrays
Bolometer
infrared, submillimeter wave, microwave and radiowave receivers and detectors
Bolometers
Channels
Electrical resistivity
Exact sciences and technology
Incident radiation
Infrared, submillimeter wave, microwave and radiowave instruments, equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Metamaterials
Physics
Spectra
Superconductivity
Wire
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Summary:We demonstrate a frequency-selective energy-harvesting sub-THz superconducting bolometer. The bolometer, a two-dimensional array of connected metamaterial resonators, exploits the collective mode of the metamaterial excitation to collect incident radiation and channel it into the bolometer hot-spot located on the connecting wire. The sharp dependence of the resistivity of the wire on the temperature at the hot-spot is utilized for radiation detection. Our approach allows combination of the radiation harvesting, spectral selectivity and detection functions in a single planar metamaterial structure.
ISSN:0953-2048
1361-6668
DOI:10.1088/0953-2048/26/8/084001