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

    11 Citations (Scopus)


    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
    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


    ConferenceSPIE Defense and Security Symposium
    Country/TerritoryUnited States


    • Imaging
    • Microbolometer
    • Millimeter-wave
    • Terahertz


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