Imaging with modular linear arrays of cryogenic Nb microbolometers

  • E. N. Grossman
  • , C. R. Dietlein
  • , J. E. Bjarnason
  • , M. Ramirez
  • , Mikko Leivo
  • , J. A. Penttilä
  • , Panu Helistö
  • , A. Luukanen

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

    Abstract

    We present ultrawideband imagery obtained with modular, 8-element, superconducting Nb microbolometer arrays. Conically scanned images are presented and compared with raster-scanned images obtained on the same arrays and from similar NbN arrays at VTT. Statistical data on detector non-uniformity, and methods for mitigating and compensating it are described. Low-noise readout is accomplished with room-temperature electronics using the transimpedance scheme of Pentilla et al. Characterization of spatial resolution, noise-equivalent temperature difference, and spectral response is done using metrology tools - standard targets, mm-wave blackbodies, and variable filters - that have been developed at NIST for this purpose.
    Original languageEnglish
    Title of host publicationPassive Millimeter-Wave Imaging Technology XI
    Subtitle of host publicationSPIE Defence and Security Symposium
    EditorsRoger Appleby
    PublisherInternational Society for Optics and Photonics SPIE
    Number of pages10
    ISBN (Print)9780819471390
    DOIs
    Publication statusPublished - 2008
    MoE publication typeA4 Article in a conference publication
    EventSPIE Defense and Security Symposium: Passive Millimeter-Wave Imaging Technology XI - Orlando, United States
    Duration: 16 Mar 200820 Mar 2008

    Publication series

    SeriesProceedings of SPIE
    Number6948
    ISSN0277-786X

    Conference

    ConferenceSPIE Defense and Security Symposium
    Country/TerritoryUnited States
    CityOrlando
    Period16/03/0820/03/08

    Keywords

    • Imaging
    • Microbolometer
    • Millimeter-wave
    • Terahertz

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