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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/ | ||||||||||||||||||||||||||||||
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| 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: |
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| 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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