Passive THz imaging system for stand-off identification of concealed objects: Results from a turn-key 16 pixel imager

A. Luukanen, Leif Grönberg, Tuomas Haarnoja, Panu Helistö, K. Kataja, Mikko Leivo, Anssi Rautiainen, J. Penttilä, J. E. Bjarnason, C. R. Dietlein, M. D. Ramirez, E. N. Grossman

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

    12 Citations (Scopus)

    Abstract

    Passive imaging of concealed objects at stand-off distances in excess of a few meters requires both excellent spatial, thermal and temporal resolution from the terahertz imaging system. The combination of these requirements while keeping the overall system cost at a reasonable level has been the motivation for this joint work. The THz imaging system under development is capable of sub-Kelvin NETD at video frame rates. In this paper we report the first imaging results from a 16-pixel array of superconducting antenna-coupled NbN vacuum-bridge microbolometers, operated within a cryogen-free, turn-key refrigerator. In addition to the system overview, we shall also address the uniformity of the detectors and present passive indoors raster-scanned imagery.
    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 pages9
    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
    CountryUnited States
    CityOrlando
    Period16/03/0820/03/08

    Fingerprint

    refrigerators
    temporal resolution
    imagery
    antennas
    spatial resolution
    pixels
    costs
    requirements
    vacuum
    detectors

    Keywords

    • Bolometers
    • Concealed weapons detection
    • Cryogenic detectors
    • Passive mm-wave imaging
    • Stand-off detection
    • Superconducting sensors
    • THz imaging

    Cite this

    Luukanen, A., Grönberg, L., Haarnoja, T., Helistö, P., Kataja, K., Leivo, M., ... Grossman, E. N. (2008). Passive THz imaging system for stand-off identification of concealed objects: Results from a turn-key 16 pixel imager. In R. Appleby (Ed.), Passive Millimeter-Wave Imaging Technology XI: SPIE Defence and Security Symposium [69480O ] International Society for Optics and Photonics SPIE. Proceedings of SPIE, No. 6948 https://doi.org/10.1117/12.784922
    Luukanen, A. ; Grönberg, Leif ; Haarnoja, Tuomas ; Helistö, Panu ; Kataja, K. ; Leivo, Mikko ; Rautiainen, Anssi ; Penttilä, J. ; Bjarnason, J. E. ; Dietlein, C. R. ; Ramirez, M. D. ; Grossman, E. N. / Passive THz imaging system for stand-off identification of concealed objects : Results from a turn-key 16 pixel imager. Passive Millimeter-Wave Imaging Technology XI: SPIE Defence and Security Symposium. editor / Roger Appleby. International Society for Optics and Photonics SPIE, 2008. (Proceedings of SPIE; No. 6948).
    @inproceedings{6bbe229ebbc8443bb988902d5b5fe700,
    title = "Passive THz imaging system for stand-off identification of concealed objects: Results from a turn-key 16 pixel imager",
    abstract = "Passive imaging of concealed objects at stand-off distances in excess of a few meters requires both excellent spatial, thermal and temporal resolution from the terahertz imaging system. The combination of these requirements while keeping the overall system cost at a reasonable level has been the motivation for this joint work. The THz imaging system under development is capable of sub-Kelvin NETD at video frame rates. In this paper we report the first imaging results from a 16-pixel array of superconducting antenna-coupled NbN vacuum-bridge microbolometers, operated within a cryogen-free, turn-key refrigerator. In addition to the system overview, we shall also address the uniformity of the detectors and present passive indoors raster-scanned imagery.",
    keywords = "Bolometers, Concealed weapons detection, Cryogenic detectors, Passive mm-wave imaging, Stand-off detection, Superconducting sensors, THz imaging",
    author = "A. Luukanen and Leif Gr{\"o}nberg and Tuomas Haarnoja and Panu Helist{\"o} and K. Kataja and Mikko Leivo and Anssi Rautiainen and J. Penttil{\"a} and Bjarnason, {J. E.} and Dietlein, {C. R.} and Ramirez, {M. D.} and Grossman, {E. N.}",
    year = "2008",
    doi = "10.1117/12.784922",
    language = "English",
    isbn = "9780819471390",
    series = "Proceedings of SPIE",
    publisher = "International Society for Optics and Photonics SPIE",
    number = "6948",
    editor = "Roger Appleby",
    booktitle = "Passive Millimeter-Wave Imaging Technology XI",
    address = "United States",

    }

    Luukanen, A, Grönberg, L, Haarnoja, T, Helistö, P, Kataja, K, Leivo, M, Rautiainen, A, Penttilä, J, Bjarnason, JE, Dietlein, CR, Ramirez, MD & Grossman, EN 2008, Passive THz imaging system for stand-off identification of concealed objects: Results from a turn-key 16 pixel imager. in R Appleby (ed.), Passive Millimeter-Wave Imaging Technology XI: SPIE Defence and Security Symposium., 69480O , International Society for Optics and Photonics SPIE, Proceedings of SPIE, no. 6948, SPIE Defense and Security Symposium, Orlando, United States, 16/03/08. https://doi.org/10.1117/12.784922

    Passive THz imaging system for stand-off identification of concealed objects : Results from a turn-key 16 pixel imager. / Luukanen, A.; Grönberg, Leif; Haarnoja, Tuomas; Helistö, Panu; Kataja, K.; Leivo, Mikko; Rautiainen, Anssi; Penttilä, J.; Bjarnason, J. E.; Dietlein, C. R.; Ramirez, M. D.; Grossman, E. N.

    Passive Millimeter-Wave Imaging Technology XI: SPIE Defence and Security Symposium. ed. / Roger Appleby. International Society for Optics and Photonics SPIE, 2008. 69480O (Proceedings of SPIE; No. 6948).

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

    TY - GEN

    T1 - Passive THz imaging system for stand-off identification of concealed objects

    T2 - Results from a turn-key 16 pixel imager

    AU - Luukanen, A.

    AU - Grönberg, Leif

    AU - Haarnoja, Tuomas

    AU - Helistö, Panu

    AU - Kataja, K.

    AU - Leivo, Mikko

    AU - Rautiainen, Anssi

    AU - Penttilä, J.

    AU - Bjarnason, J. E.

    AU - Dietlein, C. R.

    AU - Ramirez, M. D.

    AU - Grossman, E. N.

    PY - 2008

    Y1 - 2008

    N2 - Passive imaging of concealed objects at stand-off distances in excess of a few meters requires both excellent spatial, thermal and temporal resolution from the terahertz imaging system. The combination of these requirements while keeping the overall system cost at a reasonable level has been the motivation for this joint work. The THz imaging system under development is capable of sub-Kelvin NETD at video frame rates. In this paper we report the first imaging results from a 16-pixel array of superconducting antenna-coupled NbN vacuum-bridge microbolometers, operated within a cryogen-free, turn-key refrigerator. In addition to the system overview, we shall also address the uniformity of the detectors and present passive indoors raster-scanned imagery.

    AB - Passive imaging of concealed objects at stand-off distances in excess of a few meters requires both excellent spatial, thermal and temporal resolution from the terahertz imaging system. The combination of these requirements while keeping the overall system cost at a reasonable level has been the motivation for this joint work. The THz imaging system under development is capable of sub-Kelvin NETD at video frame rates. In this paper we report the first imaging results from a 16-pixel array of superconducting antenna-coupled NbN vacuum-bridge microbolometers, operated within a cryogen-free, turn-key refrigerator. In addition to the system overview, we shall also address the uniformity of the detectors and present passive indoors raster-scanned imagery.

    KW - Bolometers

    KW - Concealed weapons detection

    KW - Cryogenic detectors

    KW - Passive mm-wave imaging

    KW - Stand-off detection

    KW - Superconducting sensors

    KW - THz imaging

    U2 - 10.1117/12.784922

    DO - 10.1117/12.784922

    M3 - Conference article in proceedings

    SN - 9780819471390

    T3 - Proceedings of SPIE

    BT - Passive Millimeter-Wave Imaging Technology XI

    A2 - Appleby, Roger

    PB - International Society for Optics and Photonics SPIE

    ER -

    Luukanen A, Grönberg L, Haarnoja T, Helistö P, Kataja K, Leivo M et al. Passive THz imaging system for stand-off identification of concealed objects: Results from a turn-key 16 pixel imager. In Appleby R, editor, Passive Millimeter-Wave Imaging Technology XI: SPIE Defence and Security Symposium. International Society for Optics and Photonics SPIE. 2008. 69480O . (Proceedings of SPIE; No. 6948). https://doi.org/10.1117/12.784922