Semenov, Alexey and Richter, Heiko and Hübers, Heinz-WIlhelm and Zakosarenko, Vjatcheslav and May, Torsten and Anders, Susanne and Schultz, M. and Meyer, Hans-Georg and Kreysa, Ernst and Jethava, N. and Il'in, Konstantin and Siegel, Michael (2006) Passive Terahertz Wave Imaging with a Single Bolometer and with a Bolometer Array. In: International Forum on Terahertz Spectroscopy and Imaging. University of Kaiserslautern. 2nd Workshop on Teahertz Technology, 2006-03-01 - 2006-03-02, Kaiserslautern (Germany). (Unpublished)
Full text not available from this repository.
Abstract
Detection of concealed threats like guns, knifes or explosives is of prime importance at airports and other public places. Passive millimetre wave (mmW) imagers operating at frequencies up to almost 100 GHz have been demonstrated for this application. However with increasing distance to the object under investigation they suffer from limited spatial resolution and sensitivity. In this paper we demonstrate passive indoor imaging up to a distance of 7 m. For the initial experiments a Silicon bolometer cooled to 4.2 K was used as detector. The bolometer has a NEP of ~1.5 10-13 W/Hz1/2. It is sensitive in the range from 90 GHz to 3 THz. Images were taken with a mechanical scanner which moves the field of view of the detector across the object under investigation. Although it was possible to take images of hidden objects even at a distance up to 7 m a Silicon bolometer is not the optimal choice for imaging, because it is not a background limited detector and its response time is too large for real time video rate imaging. Also it is not a simple task to implement it into large format focal plane arrays (FPAs). To increase the imaging speed, we implemented a focal-plane array of millimeter-wave superconducting transition-edge sensors red out via superconducting quantum interference device current sensors. This decreased the acquisition time significantly.
Item URL in elib: | https://elib.dlr.de/43959/ | |||||||||||||||||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Poster) | |||||||||||||||||||||||||||||||||||||||
Title: | Passive Terahertz Wave Imaging with a Single Bolometer and with a Bolometer Array | |||||||||||||||||||||||||||||||||||||||
Authors: |
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Date: | 2 March 2006 | |||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | International Forum on Terahertz Spectroscopy and Imaging | |||||||||||||||||||||||||||||||||||||||
Refereed publication: | No | |||||||||||||||||||||||||||||||||||||||
Open Access: | No | |||||||||||||||||||||||||||||||||||||||
Gold Open Access: | No | |||||||||||||||||||||||||||||||||||||||
In SCOPUS: | No | |||||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | No | |||||||||||||||||||||||||||||||||||||||
Publisher: | University of Kaiserslautern | |||||||||||||||||||||||||||||||||||||||
Status: | Unpublished | |||||||||||||||||||||||||||||||||||||||
Keywords: | terahertz waves, imaging, superconducting bolometer | |||||||||||||||||||||||||||||||||||||||
Event Title: | 2nd Workshop on Teahertz Technology | |||||||||||||||||||||||||||||||||||||||
Event Location: | Kaiserslautern (Germany) | |||||||||||||||||||||||||||||||||||||||
Event Type: | international Conference | |||||||||||||||||||||||||||||||||||||||
Event Dates: | 2006-03-01 - 2006-03-02 | |||||||||||||||||||||||||||||||||||||||
Organizer: | University of Kaiserslautern (Germany) | |||||||||||||||||||||||||||||||||||||||
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: | 23 Oct 2006 | |||||||||||||||||||||||||||||||||||||||
Last Modified: | 27 Apr 2009 12:56 |
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