Bolometric kinetic inductance detector technology for sub-millimeter radiometric imaging

Juha Hassel, Andrey V. Timofeev, Visa Vesterinen, Hannu Sipola, Panu Helistö, Mika Aikio, Aki Mäyrä, Leif Grönberg, Arttu Luukanen

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

    7 Citations (Scopus)


    Radiometric sub-millimeter imaging is a candidate technology especially in security screening applications utilizing the property of radiation in the band of 0.2 - 1.0 THz to penetrate through dielectric substances such as clothing. The challenge of the passive technology is the fact that the irradiance corresponding to the blackbody radiation is very weak in this spectral band: about two orders of magnitude below that of the infrared band. Therefore the role of the detector technology is of ultimate importance to achieve sufficient sensitivity. In this paper we present results related to our technology relying on superconducting kinetic inductance detectors operating in a thermal (bolometric) mode. The detector technology is motivated by the fact that it is naturally suitable for scalable multiplexed readout systems, and operates with relatively simple cryogenics. We will review the basic concepts of the detectors, and provide experimental figures of merit. Furthermore, we will discuss the issues related to the scale-up of our detector technology into large 2D focal plane arrays.
    Original languageEnglish
    Title of host publicationMillimetre Wave and Terahertz Sensors and Technology VIII
    PublisherInternational Society for Optics and Photonics SPIE
    Publication statusPublished - 2015
    MoE publication typeA4 Article in a conference publication
    EventSPIE Security + Defence 2015 - Toulouse, France
    Duration: 21 Sept 201524 Sept 2015

    Publication series

    SeriesProceedings of SPIE


    ConferenceSPIE Security + Defence 2015


    • passive sub-mm imaging
    • passive THz imaging
    • kinetic inductance detector
    • focal plane array
    • concealed
    • objects detection


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