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High-frequency modulation spectroscopy with a THz quantum-cascade laser

Eichholz, Rene and Richter, Heiko and Wienold, Martin and Schrottke, Lutz and Grahn, H. T. and Hübers, Heinz-Wilhelm (2013) High-frequency modulation spectroscopy with a THz quantum-cascade laser. 7. THz Frischlingetreffen, 17.-19. Juli 2013, Berlin, Deutschland.

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Abstract

A terahertz absorption spectrometer with a quantum-cascade laser (QCL) for high-resolution molecular spectroscopy is realized. The spectrometer is based on high-frequency (up to 50 MHz) modulation of the QCL frequency. This allows for the determination of the absorption coefficient and dispersion of the absorbing medium along with a very precise measurement of the line shape of the absorption feature. The design and performance of the spectrometer are presented, and its sensitivity and frequency calibration are discussed.

Item URL in elib:https://elib.dlr.de/84782/
Document Type:Conference or Workshop Item (Speech)
Title:High-frequency modulation spectroscopy with a THz quantum-cascade laser
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Eichholz, Renerene.eichholz (at) dlr.deUNSPECIFIED
Richter, HeikoHeiko.Richter (at) dlr.deUNSPECIFIED
Wienold, MartinPDIUNSPECIFIED
Schrottke, LutzPDIUNSPECIFIED
Grahn, H. T.PDIUNSPECIFIED
Hübers, Heinz-WilhelmHeinz-Wilhelm.Huebers (at) dlr.deUNSPECIFIED
Date:17 July 2013
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:THz spectroscopy, QCL, quantum cascade laser, frequency modulation
Event Title:7. THz Frischlingetreffen
Event Location:Berlin, Deutschland
Event Type:national Conference
Event Dates:17.-19. Juli 2013
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 - FAMOUS 2 (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Experimentelle Planetenphysik
Deposited By: Eichholz, René
Deposited On:13 Nov 2013 13:44
Last Modified:31 Jul 2019 19:42

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