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Development of a THz heterodyne receiver with quantum cascade laser and hot electron bolometer mixer for stand-off detection of explosive material

Richter, H. and Semenov, A. D. and Pavlov, S. G. and Mahler, L. and Tredicucci, A. and Beere, H. E. and Ritchie, D. A. and Ortolani, M. and Schade, U. and Il'in, K. S. and Siegel, M. and Hübers, H.-W. (2009) Development of a THz heterodyne receiver with quantum cascade laser and hot electron bolometer mixer for stand-off detection of explosive material. SPIE. SPIE, Defense&Security, 14-15 April 2009, Orlando, USA. ISBN 9780819475770.

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Abstract

The terahertz (THz) portion of the electromagnetic spectrum provides specific spectroscopic information for substance identification. It has been shown that the spectral features of explosive materials might be used for detection and identification at stand-off distances. We report on the development of a THz spectrometer for explosive detection and identification. The system is based on THz quantum cascade lasers working at different frequencies. These are used for illumination of the object under test. The reflected and backscattered radiation from the object under test is detected with a sensitive heterodyne receiver. As a first step a single frequency, liquid-cryogen free heterodyne receiver operating at 2.5 THz has been developed. In order to realize maximum sensitivity a phonon-cooled NbN hot electron bolometric mixer with a quantum cascade laser as local oscillator were chosen. The concept of the system and first results will be presented.

Document Type:Conference or Workshop Item (Paper)
Title:Development of a THz heterodyne receiver with quantum cascade laser and hot electron bolometer mixer for stand-off detection of explosive material
Authors:
AuthorsInstitution or Email of Authors
Richter, H.Heiko.Richter@dlr.de
Semenov, A. D.UNSPECIFIED
Pavlov, S. G. UNSPECIFIED
Mahler, L.NEST CNR-INFM, Pisa, Italy
Tredicucci, A.NEST CNR-INFM, Pisa, Italy
Beere, H. E.University of Cambridge, UK
Ritchie, D. A.University of Cambridge, UK
Ortolani, M.CNR-IFN, Roma, Italy
Schade, U.BESSY, Berlin, Germany
Il'in, K. S.Universität Karlsruhe, Germany
Siegel, M.Universtiät Karlsruhe, Germany
Hübers, H.-W.UNSPECIFIED
Date:2009
Volume:7311
Page Range:pp. 7311041-7311049
Editors:
EditorsEmail
Anwar, MehdiUNSPECIFIED
Dhar, Nibir K.UNSPECIFIED
Crowe, Thomas W.UNSPECIFIED
Publisher:SPIE
Series Name:0277-786X
ISBN:9780819475770
Status:Published
Keywords:THz, radar, pulse tube cooler, QCL, HEB
Event Title:SPIE, Defense&Security
Event Location:Orlando, USA
Event Type:international Conference
Event Dates:14-15 April 2009
Organizer:SPIE
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Transport
HGF - Program Themes:Traffic Management
DLR - Research area:Transport
DLR - Program:V VM - Verkehrsmanagement
DLR - Research theme (Project):V - FAMOUS (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Deposited By: Dr.rer.nat. Heiko Richter
Deposited On:26 Aug 2009 12:26
Last Modified:12 Feb 2010 11:37

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