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Towards a 4.75-THz local oscillator based on a terahertz quantum-cascade laser with a back-facet mirror

Hagelschuer, Till and Richter, Heiko and Wienold, Martin and Lü, Xiang and Röben, Benjamin and Schrottke, Lutz and Biermann, Klaus and Grahn, Holger T. and Hübers, Heinz-Wilhelm (2019) Towards a 4.75-THz local oscillator based on a terahertz quantum-cascade laser with a back-facet mirror. 44th International Conference on Infrared, Millimeter, and Terahertz Waves, 01.-06. Sep. 2019, Paris, Frankreich.

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Abstract

We report on a compact terahertz (THz) source based on a quantum-cascade laser (QCL). The source is intended for a local oscillator in a THz heterodyne receiver for the detection of the fine structure line of neutral atomic oxygen (OI) at 4.7448 THz. The QCL which is mounted in a small mechanical cryocooler employs a GaAs/AlAs active-region heterostructure and a resonator with an additional back-facet mirror. This allows for low electrical pump powers of less than 1.2 W and high optical output powers of up to 8 mW. The whole setup weighs less than 4 kg. The application of such a system in a spaceborne mission appears to be feasible.

Item URL in elib:https://elib.dlr.de/133263/
Document Type:Conference or Workshop Item (Poster)
Title:Towards a 4.75-THz local oscillator based on a terahertz quantum-cascade laser with a back-facet mirror
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hagelschuer, TillDLR, Institut für Optische SensorsystemeUNSPECIFIED
Richter, HeikoDLR, Institut für Optische SensorsystemeUNSPECIFIED
Wienold, MartinHumboldt-Universität zu BerlinUNSPECIFIED
Lü, XiangPaul-Drude-Institut für Festkörperelektronik, Berlin, GermanyUNSPECIFIED
Röben, BenjaminPaul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e. V.UNSPECIFIED
Schrottke, LutzPaul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e. V.UNSPECIFIED
Biermann, KlausPaul-Drude-Institut für Festkörperelektronik, BerlinUNSPECIFIED
Grahn, Holger T.Paul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e. V.UNSPECIFIED
Hübers, Heinz-WilhelmDLR, Institut für Optische Sensorsysteme, BerlinUNSPECIFIED
Date:2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Terahertz spectroscopy, quantum-cascade lasers, space applications
Event Title:44th International Conference on Infrared, Millimeter, and Terahertz Waves
Event Location:Paris, Frankreich
Event Type:international Conference
Event Dates:01.-06. Sep. 2019
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 Sicherheitsrelevante Erdbeobachtung
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Deposited By: Hagelschuer, Till
Deposited On:08 Jan 2020 08:42
Last Modified:08 Jan 2020 08:42

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