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Proceedings Paper

Cold performance tests of blocked-impurity-band Si:As detectors developed for DARWIN
Author(s): Stephan M. Birkmann; Jutta Stegmaier; Ulrich Grözinger; Oliver Krause; Tim Souverijns; Jan Putzeys; Deniz Sabuncuoglu Tezcan; Koen De Munck; Paolo Fiorini; Kiki Minoglou; Patrick Merken; Chris Van Hoof; Piet De Moor
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Paper Abstract

We report first results of laboratory tests of Si:As blocked-impurity-band (BIB) mid-infrared (4 to 28 μm) detectors developed by IMEC. These prototypes feature 88 pixels hybridized on an integrated cryogenic readout electronics (CRE). They were developed as part of a technology demonstration program for the future Darwin mission. In order to be able to separate detector and readout effects, a custom build TIA circuitry was used to characterize additional single pixel detectors. We used a newly designed test setup at the MPIA to determine the relative spectral response, the quantum efficiency, and the dark current. All these properties were measured as a function of operating temperature and detector bias. In addition the effects of ionizing radiation on the detector were studied. For determining the relative spectral response we used a dualgrating monochromator and a bolometer with known response that was operated in parallel to the Si:As detectors. The quantum efficiency was measured by using a custom-build high-precision vacuum black body together with cold (T ~ 4K) filters of known (measured) transmission.

Paper Details

Date Published: 22 July 2008
PDF: 11 pages
Proc. SPIE 7021, High Energy, Optical, and Infrared Detectors for Astronomy III, 70210R (22 July 2008); doi: 10.1117/12.789103
Show Author Affiliations
Stephan M. Birkmann, Max-Planck-Institut für Astronomie (Germany)
Jutta Stegmaier, Max-Planck-Institut für Astronomie (Germany)
Ulrich Grözinger, Max-Planck-Institut für Astronomie (Germany)
Oliver Krause, Max-Planck-Institut für Astronomie (Germany)
Tim Souverijns, IMEC (Belgium)
Jan Putzeys, IMEC (Belgium)
Deniz Sabuncuoglu Tezcan, IMEC (Belgium)
Koen De Munck, IMEC (Belgium)
Paolo Fiorini, IMEC (Belgium)
Kiki Minoglou, IMEC (Belgium)
Patrick Merken, IMEC (Belgium)
Chris Van Hoof, IMEC (Belgium)
Piet De Moor, IMEC (Belgium)


Published in SPIE Proceedings Vol. 7021:
High Energy, Optical, and Infrared Detectors for Astronomy III
David A. Dorn; Andrew D. Holland, Editor(s)

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