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Superconducting noise bolometer for terahertz radiation

Semenov, Alexey and Richter, Heiko and Hübers, Heinz-Wilhelm and Il'in, Konstantin and Siegel, Michael (2005) Superconducting noise bolometer for terahertz radiation. Applied Physics Letters, 87 (17), pp. 173508-173511. AIP. DOI: 10.1063/1.2115086.

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Official URL: http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=APPLAB000087000017173508000001&idtype=cvips&gifs=yes


We present a superconducting noise bolometer that is a bolometric detector sensing radiation via radiation-induced changes of its own microwave noise. The detector represents a nano-strip made from a thin NbN superconducting film. It operates in the superconducting state and carries a supercurrent slightly less than the critical current. Radiation couples with the detector via an immersion lens and a planar antenna, which jointly define the useful spectral range from 1 to 5 THz. At an ambient temperature of 4.2 K the optically measured noise-equivalent power amounts at ≈ 10<sup>-13</sup> W Hz<sup>-1/2</sup> along with a time-constant of approximately 150 ps.

Document Type:Article
Title:Superconducting noise bolometer for terahertz radiation
AuthorsInstitution or Email of Authors
Semenov, AlexeyUNSPECIFIED
Hübers, Heinz-WilhelmUNSPECIFIED
Il'in, KonstantinUniversity Karlsruhe, Institute of Micro- and Nanoelectronic Systems
Siegel, MichaelUniversity Karlsruhe, Institute of Micro- and Nanoelectronic Systems
Date:24 October 2005
Journal or Publication Title:Applied Physics Letters
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:pp. 173508-173511
Keywords:Detection of terahertz radiation, noise, superconducting bolometer
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: Prof.Dr. Alexey Semenov
Deposited On:11 Dec 2005
Last Modified:27 Apr 2009 04:45

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