Semenov, Alexey and Richter, Heiko and Hübers, Heinz-Wilhelm and Il´in, Konstantin and Siegel, Michael and Engel, Andreas (2005) Current-noise superconducting bolometer for terahertz waves. In: Proceedings of the 9th World Multi-Conference on Systemics, Cybernetics and Informatics, IX, pp. 176-177. WMSCI 2005, 2005-07-10 - 2005-07-13, Orlando, Florida (USA). ISBN 980-6560-61-2.
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Abstract
An advantage of superconducting detectors is a much lower noise in comparison to their semiconductor counterparts. We have studied the magnitude and spectrum of electric noise in thin superconducting NbN nanostrips carrying a subcritical current. Analysis of the experimental data suggests that the noise appears due to fluctuations in the two-dimensional vortex gas below the Kosterlitz-Thouless phase transition. Implementing this approach to the noise mechanism, we proposed a novel detector. The novelty is the use of the noise, which generally hampers the performance of conventional detectors, as the physical quantity that itself senses radiation. Our detector patterned from a thin NbN superconducting film and integrated in a planar log-periodic antenna. The detector operates at 4.2 K in the current-carrying superconducting state. Optically measured noise-equivalent power amounted at 10<sup>-14</sup> W Hz<sup>-1</sup> and is likely to improve at lower temperatures.
Item URL in elib: | https://elib.dlr.de/20179/ | |||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | |||||||||||||||||||||
Title: | Current-noise superconducting bolometer for terahertz waves | |||||||||||||||||||||
Authors: |
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Date: | 2005 | |||||||||||||||||||||
Journal or Publication Title: | Proceedings of the 9th World Multi-Conference on Systemics, Cybernetics and Informatics | |||||||||||||||||||||
Refereed publication: | No | |||||||||||||||||||||
Open Access: | No | |||||||||||||||||||||
Gold Open Access: | No | |||||||||||||||||||||
In SCOPUS: | No | |||||||||||||||||||||
In ISI Web of Science: | No | |||||||||||||||||||||
Volume: | IX | |||||||||||||||||||||
Page Range: | pp. 176-177 | |||||||||||||||||||||
Editors: |
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ISBN: | 980-6560-61-2 | |||||||||||||||||||||
Status: | Published | |||||||||||||||||||||
Keywords: | Noise in superconductors, nonequilibrium superconductivity, Superconducting terahertz and submillimeter wave detectors | |||||||||||||||||||||
Event Title: | WMSCI 2005 | |||||||||||||||||||||
Event Location: | Orlando, Florida (USA) | |||||||||||||||||||||
Event Type: | international Conference | |||||||||||||||||||||
Event Dates: | 2005-07-10 - 2005-07-13 | |||||||||||||||||||||
Organizer: | Institute of Informatics and Systemics | |||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport (old) | |||||||||||||||||||||
HGF - Program: | Space (old) | |||||||||||||||||||||
HGF - Program Themes: | W EW - Erforschung des Weltraums | |||||||||||||||||||||
DLR - Research area: | Space | |||||||||||||||||||||
DLR - Program: | W EW - Erforschung des Weltraums | |||||||||||||||||||||
DLR - Research theme (Project): | W - Projekt SOFIA (old) | |||||||||||||||||||||
Location: | Berlin-Adlershof | |||||||||||||||||||||
Institutes and Institutions: | Institute of Planetary Research > Terahertz and Infrared Sensors | |||||||||||||||||||||
Deposited By: | Semenov, Prof.Dr. Alexey | |||||||||||||||||||||
Deposited On: | 11 Dec 2005 | |||||||||||||||||||||
Last Modified: | 27 Apr 2009 04:45 |
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