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Proceedings Paper

The 4.7-THz quantum-cascade laser local oscillator on SOFIA (Conference Presentation)
Author(s): Heinz-Wilhelm Hübers; Heiko Richter; Martin Wienold; Lutz Schrottke; Klaus Biermann; Holger T. Grahn

Paper Abstract

High-resolution terahertz (THz) heterodyne spectroscopy is an important technique in astronomy. So far frequencies above 2.5 THz could not be accessed by this technique because of the lack of a suitable local oscillator. A novel local oscillator based on a THz quantum-cascade laser allows for the observation of the fine-structure line of neutral atomic oxygen at 4.7448 THz. The local oscillator has been implemented in the GREAT (German REceiver for Astronomy at Terahertz frequencies) spectrometer on SOFIA, the Stratospheric Observatory for Infrared Astronomy. The design and the performance of the local oscillator will be presented.

Paper Details

Date Published: 20 April 2017
PDF: 1 pages
Proc. SPIE 10123, Novel In-Plane Semiconductor Lasers XVI, 1012314 (20 April 2017);
Show Author Affiliations
Heinz-Wilhelm Hübers, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Heiko Richter, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Martin Wienold, Humboldt-Univ. zu Berlin (Germany)
Lutz Schrottke, Paul-Drude-Institut für Festkörperelektronik (Germany)
Klaus Biermann, Paul-Drude-Institut für Festkörperelektronik (Germany)
Holger T. Grahn, Paul-Drude-Institut für Festkörperelektronik (Germany)


Published in SPIE Proceedings Vol. 10123:
Novel In-Plane Semiconductor Lasers XVI
Alexey A. Belyanin; Peter M. Smowton, Editor(s)

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