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A Compact 4.75-THz Source Based on a 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) A Compact 4.75-THz Source Based on a Quantum-Cascade Laser With a Back-Facet Mirror. IEEE Transactions on Terahertz Science and Technology. IEEE - Institute of Electrical and Electronics Engineers. ISSN 2156-342X

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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 at 4.7448 THz. The laser is mounted in a mechanical cryocooler. Laser operation is realized in continuous-wave mode in the range from -2.7 to +9.4 GHz around the target frequency. Special care has been taken on the laser design, which employs a GaAs/AlAs active region heterostructure and a resonator with an additional back-facet mirror. At a typical QCL operating point (I = 200 mA, T = 60 K, v = 4.75 THz, Popt = 5 mW) close to the target frequency, this system with a mass of only 4 kg requires an electrical input power of less than 130 W for a cooling capacity of up to 4 W. The maximum optical output power of the QCL reaches up to 8 mW with an electrical pump power of less than 1.8 W. The application of such a system in a spaceborne mission appears to be feasible.

Item URL in elib:https://elib.dlr.de/130920/
Document Type:Article
Title:A Compact 4.75-THz Source Based on a 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, Berlin, GermanyUNSPECIFIED
Grahn, Holger T.Paul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e. V.UNSPECIFIED
Hübers, Heinz-WilhelmDLR, Institut für Optische SensorsystemeUNSPECIFIED
Date:November 2019
Journal or Publication Title:IEEE Transactions on Terahertz Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:2156-342X
Status:Published
Keywords:Quantum-cascade laser (QCL), space technology, terahertz spectroscopy
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:21 Nov 2019 09:32
Last Modified:21 Nov 2019 09:32

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