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Heterodyne receiver for 3-5 THz with hot electron bolometer mixer

Hübers, H.-W. and Semenov, A. and Richter, H. and Schwarz, M. and Günther, B. and Smirnov, K. and Goltsman, G. and Voronov, B. (2004) Heterodyne receiver for 3-5 THz with hot electron bolometer mixer. In: Millimeter and Submillimeter Detectors for Astronomy II, 5498, pp. 579-586. SPIE. Millimeter und Submillimeter Detectors for Astronomy II, Glasgow, 21.-22.6.2004.

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Abstract

Heterodyne receivers for applications in astronomy need quantum limited sensitivity. In instruments which are currently build for SOFIA or Herschel superconducting hot electron bolometers (HEB) will be used to achieve this goal at frequencies above 1.4 THz. We present results of the development of a phonon-cooled NbN HEB mixer for the high frequency channel of GREAT, the German Receiver for Astronomy at Terahertz Frequencies, which will be flown aboard SOFIA. The high frequency channel is centered at 4.7 THz in order to detect the fine structure line of atomic oxygen (OI). We will present the design of the high frequency channel including the local oscillator, an optically pumped THz gas laser, and the quasi-optical phonon cooled HEB mixer. In order to optimize the performance mixers with different logarithmic spiral and double slot feed antennas have been investigated. Their noise temperatures and beam patterns were measured at several frequencies between 0.7 THz and 5.2 THz. Above 3 THz the best performance was achieved with a superconducting bridge of 0.2 x 2.0 µm2 incorporated in a logarithmic spiral antenna. The DSB noise temperatures were 2900 K, 4000 K and 6000 K at 3.1 THz, 4.3 THz and 5.2 THz, respectively. The results demonstrate that the NbN HEB is very well suited as a mixer for THz heterodyne receivers up to at least 5 THz.

Item URL in elib:https://elib.dlr.de/11100/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:Heterodyne receiver for 3-5 THz with hot electron bolometer mixer
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hübers, H.-W.UNSPECIFIEDUNSPECIFIED
Semenov, A.UNSPECIFIEDUNSPECIFIED
Richter, H.UNSPECIFIEDUNSPECIFIED
Schwarz, M.UNSPECIFIEDUNSPECIFIED
Günther, B.UNSPECIFIEDUNSPECIFIED
Smirnov, K.Staatliche Pädagogische Universität Moskau/RusslandUNSPECIFIED
Goltsman, G.Staatliche Pädagogische Universität Moskau/RusslandUNSPECIFIED
Voronov, B.Staatliche Pädagogische Universität Moskau/RusslandUNSPECIFIED
Date:2004
Journal or Publication Title:Millimeter and Submillimeter Detectors for Astronomy II
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:5498
Page Range:pp. 579-586
Editors:
EditorsEmail
Zmuidzinas, J.UNSPECIFIED
Holland, W.S.UNSPECIFIED
Withington, S.UNSPECIFIED
Publisher:SPIE
Series Name:Proceedings of SPIE
Status:Published
Keywords:Terahertz heterodyne receiver, Hot-electron bolometer, optical coupling, local oscillator
Event Title:Millimeter und Submillimeter Detectors for Astronomy II, Glasgow, 21.-22.6.2004
Organizer:SPIE
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):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Pieth, Susanne
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 16:50

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