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THz Quantum-Cascade Laser as Local Oscillator for SOFIA
Richter, Heiko and Greiner-Bär, Michael and Pavlov, Sergey and Semenov, A. D. and Wienold, Martin and Schrottke, L. and Giehler, M and Hey, R. and Grahn, H.-T. and Hübers, Heinz-Wilhelm (2011) THz Quantum-Cascade Laser as Local Oscillator for SOFIA. IRMMW 2011, 3 Oct - 7 Nov 2011, Houston, Texas, USA.
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Abstract
We report on the development of a compact local oscillator (LO) for operation on board of SOFIA, namely for GREAT, the German Receiver for Astronomy at Terahertz Frequencies. The LO combines a quantum-cascade laser (QCL) with a compact, low-input-power Stirling cooler. The output power is sufficient for pumping a hot-electron bolometer mixer. Frequency stabilization is achieved by locking to a molecular absorption line. Detectors operating at room temperature can be used for the stabilization as well. High-resolution molecular spectroscopic experiments demonstrate the usability as LO for SOFIA.
| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||
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| Title: | THz Quantum-Cascade Laser as Local Oscillator for SOFIA | ||||||||||||||||||||||
| Authors: |
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| Date: | 03 September 2011 | ||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||
| Keywords: | SOFIA, QCL, compact | ||||||||||||||||||||||
| Event Title: | IRMMW 2011 | ||||||||||||||||||||||
| Event Location: | Houston, Texas, USA | ||||||||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||||||||
| Event Dates: | 3 Oct - 7 Nov 2011 | ||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||
| HGF - Program: | Space | ||||||||||||||||||||||
| HGF - Program Themes: | W EO - Erdbeobachtung | ||||||||||||||||||||||
| DLR - Research area: | Space | ||||||||||||||||||||||
| DLR - Program: | W EO - Erdbeobachtung | ||||||||||||||||||||||
| DLR - Research theme (Project): | W - Vorhaben Sicherheitsrelevante Erdbeobachtung (old) | ||||||||||||||||||||||
| Location: | Berlin-Adlershof | ||||||||||||||||||||||
| Institutes and Institutions: | Institute of Planetary Research > Terahertz and Infrared Sensors | ||||||||||||||||||||||
| Deposited By: | Dr.rer.nat. Heiko Richter | ||||||||||||||||||||||
| Deposited On: | 14 Nov 2011 11:57 | ||||||||||||||||||||||
| Last Modified: | 14 Nov 2011 11:57 |
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