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4.7-THz Local Oscillator for the GREAT Heterodyne Spectrometer on SOFIA

Richter, Heiko and Wienold, Martin and Schrottke, Lutz and Biermann, Klaus and Grahn, H. T. and Hübers, H.-W. (2015) 4.7-THz Local Oscillator for the GREAT Heterodyne Spectrometer on SOFIA. In: IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY pp. 539-544.

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Abstract

The design and the performance of a 4.7-THz local oscillator (LO) for the GREAT (German REceiver for Astronomy at Terahertz frequencies) heterodyne spectrometer on SOFIA, the Stratospheric Observatory for Infrared Astronomy, are presented. The LO is based on a quantum-cascade laser, which is mounted in a compact mechanical cryocooler. The LO provides up to 150 W output power into a nearly Gaussian shaped beam. It covers the frequency range from approximately 2 to 4 GHz around the fine structure line of neutral atomic oxygen, OI, at 4.7448 THz. The LO has been successfully operated on SOFIA during six observation flights in May 2014 and January 2015.

Item URL in elib:https://elib.dlr.de/98949/
Document Type:Contribution to a Collection
Title:4.7-THz Local Oscillator for the GREAT Heterodyne Spectrometer on SOFIA
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Richter, HeikoHeiko.Richter (at) dlr.deUNSPECIFIED
Wienold, MartinPDIUNSPECIFIED
Schrottke, LutzPDIUNSPECIFIED
Biermann, KlausPDIUNSPECIFIED
Grahn, H. T.PDIUNSPECIFIED
Hübers, H.-W.DLR, Berlin, GermanyUNSPECIFIED
Date:July 2015
Journal or Publication Title:IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:4
Page Range:pp. 539-544
Status:Published
Keywords:Heterodyne spectroscopy, local oscillator, quantum-cascade laser (QCL), SOFIA, terahertz (THz)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Traffic Management (old)
DLR - Research area:Transport
DLR - Program:V VM - Verkehrsmanagement
DLR - Research theme (Project):V - Optimode (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems
Deposited By: Richter, Dr.rer.nat. Heiko
Deposited On:02 Nov 2015 07:03
Last Modified:10 May 2016 23:33

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