Universität zu Köln

Risacher, Christophe, Guesten, Rolf, Stutzki, Juergen, Huebers, Heinz-Wilhelm, Buechel, Denis, Graf, Urs U., Heyminck, Stefan, Honingh, Cornelia E., Jacobs, Karl, Klein, Bernd, Klein, Thomas, Leinz, Christian, Puetz, Patrick, Reyes, Nicolas, Ricken, Oliver, Wunsch, Hans-Joachim, Fusco, Paul and Rosner, Stefan (2016). First Supra-THz Heterodyne Array Receivers for Astronomy With the SOFIA Observatory. IEEE Trans. Terahertz Sci. Technol., 6 (2). S. 199 - 212. PISCATAWAY: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. ISSN 2156-342X

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Abstract

We present the upGREAT THz heterodyne arrays for far-infrared astronomy. The low-frequency array (LFA) is designed to cover the 1.9-2.5 THz range using 2 7-pixel wave-guide-based HEB mixer arrays in a dual polarization configuration. The high-frequency array (HFA) will perform observations of the [OI] line at 4.745 THz using a 7-pixel waveguide-based HEB mixer array. This paper describes the common design for both arrays, cooled to 4.5 K using closed-cycle pulse tube technology. We then show the laboratory and telescope characterization of the first array with its 14 pixels (LFA), which culminated in the successful commissioning in May 2015 aboard the SOFIA airborne observatory observing the [CII] fine structure transition at 1.9005 THz. This is the first successful demonstration of astronomical observations with a heterodyne focal plane array above 1 THz and is also the first time high-power closed-cycle coolers for temperatures below 4.5 K are operated on an airborne platform.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Risacher, Christophe UNSPECIFIED UNSPECIFIED UNSPECIFIED Guesten, Rolf UNSPECIFIED UNSPECIFIED UNSPECIFIED Stutzki, Juergen UNSPECIFIED UNSPECIFIED UNSPECIFIED Huebers, Heinz-Wilhelm UNSPECIFIED UNSPECIFIED UNSPECIFIED Buechel, Denis UNSPECIFIED UNSPECIFIED UNSPECIFIED Graf, Urs U. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heyminck, Stefan UNSPECIFIED UNSPECIFIED UNSPECIFIED Honingh, Cornelia E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jacobs, Karl UNSPECIFIED UNSPECIFIED UNSPECIFIED Klein, Bernd UNSPECIFIED UNSPECIFIED UNSPECIFIED Klein, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Leinz, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED Puetz, Patrick UNSPECIFIED UNSPECIFIED UNSPECIFIED Reyes, Nicolas UNSPECIFIED UNSPECIFIED UNSPECIFIED Ricken, Oliver UNSPECIFIED UNSPECIFIED UNSPECIFIED Wunsch, Hans-Joachim UNSPECIFIED UNSPECIFIED UNSPECIFIED Fusco, Paul UNSPECIFIED UNSPECIFIED UNSPECIFIED Rosner, Stefan UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-283731
DOI:	10.1109/TTHZ.2015.2508005
Journal or Publication Title:	IEEE Trans. Terahertz Sci. Technol.
Volume:	6
Number:	2
Page Range:	S. 199 - 212
Date:	2016
Publisher:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Place of Publication:	PISCATAWAY
ISSN:	2156-342X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language QUANTUM CASCADE LASER; LOCAL OSCILLATOR; BOLOMETER; NOISE Multiple languages Engineering, Electrical & Electronic; Optics; Physics, Applied Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/28373