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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 421748.0, MPI für Astronomie / Publikationen_mpia
Cold performance tests of blocked-impurity-band Si:As detectors developed for DARWIN
Authors:Birkmann, Stephan M.; Stegmaier, Jutta; Grözinger, Ulrich; Krause, Oliver; Souverijns, Tim; Putzeys, Jan; Sabuncuoglu Tezcan, Deniz; De Munck, Koen; Fiorini, Paolo; Minoglou, Kiki; Merken, Patrick; Van Hoof, Chris; De Moor, Piet
Place of Publication:Bellingham, Wash.
Date of Publication (YYYY-MM-DD):2008
Title of Proceedings:High Energy, Optical, and Infrared Detectors for Astronomy III
Start Page:70210R-70210R
End Page:11
Title of Series:SPIE
Volume (in Series):7021
Name of Conference/Meeting:Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series
Review Status:not specified
Audience:Experts Only
Abstract / Description:We report first results of laboratory tests of Si:As blocked-impurity-band (BIB) mid-infrared (4 to 28 mum) 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.
Comment of the Author/Creator:Date: 2008, August 1, 2008
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2008SPIE.7021E..22B [ID No:1]
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