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).
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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.}",
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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

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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.

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AU - Grossman, E. N.

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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.

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KW - Concealed weapons detection

KW - Cryogenic detectors

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KW - Stand-off detection

KW - Superconducting sensors

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M3 - Conference article in proceedings

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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