Semenov, Alexey and Richter, Heiko and Hübers, Heinz-Wilhelm and Il'in, Konstantin and Siegel, Michael (2006) Noise Bolometer for Terahertz Waves. In: Conference Proceedings 16th International Symposium on Space Terahertz Technology, pp. 505-506. Chalmers University of Technology, Göteborg, Sweden. 16th International Symposium on Space Terahertz Technology, 2005-05-02 - 2005-05-04, Göteborg (Sweden). ISSN 1652-0769.
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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^-13 W / Hz^1/2 and is likely to improve at lower temperatures.
Item URL in elib: | https://elib.dlr.de/43956/ | ||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||
Title: | Noise Bolometer for Terahertz Waves | ||||||||||||||||||
Authors: |
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Date: | 1 June 2006 | ||||||||||||||||||
Journal or Publication Title: | Conference Proceedings 16th International Symposium on Space Terahertz Technology | ||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||
Open Access: | No | ||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||
Page Range: | pp. 505-506 | ||||||||||||||||||
Editors: |
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Publisher: | Chalmers University of Technology, Göteborg, Sweden | ||||||||||||||||||
ISSN: | 1652-0769 | ||||||||||||||||||
Status: | Published | ||||||||||||||||||
Keywords: | Noise in superconductors, nonequilibrium superconductivity, Superconducting terahertz and submillimeter wave detectors | ||||||||||||||||||
Event Title: | 16th International Symposium on Space Terahertz Technology | ||||||||||||||||||
Event Location: | Göteborg (Sweden) | ||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||
Event Dates: | 2005-05-02 - 2005-05-04 | ||||||||||||||||||
Organizer: | Chalmers University of Technology | ||||||||||||||||||
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: | 26 Jun 2006 | ||||||||||||||||||
Last Modified: | 27 Apr 2009 12:56 |
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