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Real-time spectroscopy of various gas species through optical feedback in a terahertz quantum-cascade laser

Hagelschuer, Till and Richter, Heiko and Wienold, Martin and Biermann, K. and Schrottke, Lutz and Grahn, H. T. and Hübers, Heinz-Wilhelm (2017) Real-time spectroscopy of various gas species through optical feedback in a terahertz quantum-cascade laser. In: 14th International Conference on Intersubband Transitions in Quantum Wells. 14th International Conference on Intersubband Transitions in Quantum Wells, 10.-15. Sep. 2017, Singapur.

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Abstract

We have developed a compact high-spectral resolution setup based on self-mixing in a THz QCL. It allows for real-time observation of various gas species and their interaction dynamics as demonstrated with an absorption cell filled with D2O/CH3OD. Such a system does not rely on a large output power of the THz light source and opens the path for sophisticated real-time observations of different gas mixtures far beyond their mere identification.

Item URL in elib:https://elib.dlr.de/117886/
Document Type:Conference or Workshop Item (Speech)
Title:Real-time spectroscopy of various gas species through optical feedback in a terahertz quantum-cascade laser
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hagelschuer, TillTill.Hagelschuer (at) dlr.deUNSPECIFIED
Richter, HeikoHeiko.Richter (at) dlr.deUNSPECIFIED
Wienold, MartinMartin.Wienold (at) dlr.deUNSPECIFIED
Biermann, K.PDIUNSPECIFIED
Schrottke, LutzPDIUNSPECIFIED
Grahn, H. T.PDIUNSPECIFIED
Hübers, Heinz-WilhelmHeinz-Wilhelm.Huebers (at) dlr.deUNSPECIFIED
Date:2017
Journal or Publication Title:14th International Conference on Intersubband Transitions in Quantum Wells
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:quantum-cascade laser external optical Feedback terahertz spectroscopy
Event Title:14th International Conference on Intersubband Transitions in Quantum Wells
Event Location:Singapur
Event Type:international Conference
Event Dates:10.-15. Sep. 2017
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Optische Fernerkundung für sicherheitsrelevante Anwendungen
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Deposited By: Hagelschuer, Till
Deposited On:08 Jan 2018 11:53
Last Modified:01 Dec 2018 19:53

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