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Cold performance tests of blocked-impurity-band si:As detectors developed for Darwin

  • Stephan M. Birkmann
  • , Jutta Stegmaier
  • , Ulrich Gr Ozinger
  • , Oliver Krause
  • , Tim Souverijns
  • , Jan Putzeys
  • , Deniz Sabuncuoglu Tezcan
  • , Koen De Munck
  • , Paolo Fiorini
  • , Kiki Minoglou
  • , Patrick Merken
  • , Chris Van Hoof
  • , Piet De Moor
  • MPIA
  • IMEC

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

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.

Original languageEnglish
Title of host publicationHigh Energy, Optical, and Infrared Detectors for Astronomy III
DOIs
Publication statusPublished - 2008
EventHigh Energy, Optical, and Infrared Detectors for Astronomy III - Marseille, France
Duration: 23 Jun 200826 Jun 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7021
ISSN (Print)0277-786X

Conference

ConferenceHigh Energy, Optical, and Infrared Detectors for Astronomy III
Country/TerritoryFrance
CityMarseille
Period23/06/0826/06/08

Keywords

  • DARWIN
  • Dark current
  • Detector characterization
  • Mid-infrared detectors
  • Relative spectral response
  • Responsivity
  • Si:As blocked-impurity-band detectors

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