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Heterodyne receiver at 2.5 THz with quantum cascade laser and hot electron bolometric mixer

Hübers, Heinz-Wilhelm and Pavlov, S.G. and Richter, H. and Semenov, A.D. and Mahler, L. and Tredicucci, A. and Beere, H.E. and Ritchie, D.A. (2006) Heterodyne receiver at 2.5 THz with quantum cascade laser and hot electron bolometric mixer. In: Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, 6275, 62750H-1-62750H-9. SPIE. Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, 2006-05-29 - 2006-05-31, Orlando [Florida (USA)]. ISBN 0-8194-6340-X ISSN 0277-786X

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Abstract

Quantum cascade lasers (QCLs) operating at 2.5 THz have been used for gas phase spectroscopy and as local oscillator in a heterodyne receiver. One QCL has a Fabry-Perot resonator while the other has a distributed feedback resonator. The linewidth and frequency tunability of both QCLs have been investigated by either mixing two modes of the QCL or by mixing the emission from the QCL with the emission from a 2.5 THz gas laser. The frequency tunability as well as the linewidth is sufficient for Doppler limited spectroscopy of methanol gas. The QCLs havae been used succesfully as local oscillators in a heterodyne receiver. Noise temperature measurements with a hot electron bolometer and a QCL yielded the same result as with a gas laser as local oscillator.

Item URL in elib:https://elib.dlr.de/44526/
Document Type:Conference or Workshop Item (Speech)
Title:Heterodyne receiver at 2.5 THz with quantum cascade laser and hot electron bolometric mixer
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hübers, Heinz-WilhelmUNSPECIFIEDUNSPECIFIED
Pavlov, S.G.UNSPECIFIEDUNSPECIFIED
Richter, H.UNSPECIFIEDUNSPECIFIED
Semenov, A.D.UNSPECIFIEDUNSPECIFIED
Mahler, L.NEST CNR-INFM and Scuola Normal Superiore, Pisa, ItalyUNSPECIFIED
Tredicucci, A.NEST CNR-INFM and Scuola Normal Superiore, Pisa, ItalyUNSPECIFIED
Beere, H.E.Cavendish Laboratory, University of Cambridge, Cambridge, UKUNSPECIFIED
Ritchie, D.A.Cavendish Laboratory, University of Cambridge, Cambridge, UKUNSPECIFIED
Date:31 May 2006
Journal or Publication Title:Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:6275
Page Range:62750H-1-62750H-9
Publisher:SPIE
Series Name:Proceedings SPIE
ISSN:0277-786X
ISBN:0-8194-6340-X
Status:Published
Keywords:terahertz, heterodyne receiver, quantum cascade laser, local oscillator, hot electron bolometer
Event Title:Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III
Event Location:Orlando [Florida (USA)]
Event Type:international Conference
Event Dates:2006-05-29 - 2006-05-31
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):W - Projekt SOFIA (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Hübers, Dr. Heinz-Wilhelm
Deposited On:24 Aug 2006
Last Modified:27 Apr 2009 13:02

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