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/ | ||||||||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||||||||
Title: | A Compact 4.75-THz Source Based on a Quantum-Cascade Laser With a Back-Facet Mirror | ||||||||||||||||||||||||||||||
Authors: |
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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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