NbN vacuum bridge bolometer arrays with room temperature readout approaching photon noise limited THz imaging applications

Panu Helistö, Jari Penttilä, Hannu Sipola, Leif Grönberg, F. Maibaum, Arttu Luukanen, Heikki Seppä

    Research output: Contribution to journalArticleScientificpeer-review

    8 Citations (Scopus)

    Abstract

    We study the applicability of superconducting NbN vacuum bridge bolometer arrays with room temperature readout electronics to passive THz imaging applications. We show that sufficient bandwidth for video-rate mechanical scanning in terms of stability and noise can be reached by exploiting the divergences of the bolometer noise temperature and the differential impedance at the I - V curve minimum. Experimental electrical noise equivalent power is 9 fW/Hz1/2. This would correspond to ¡­10 times the photon noise in a bandwidth of 0.5 THz and is comparable to the expected clutter in passive THz images due to atmospheric fluctuations.
    Original languageEnglish
    Pages (from-to)310-313
    JournalIEEE Transactions on Applied Superconductivity
    Volume17
    Issue number2
    DOIs
    Publication statusPublished - 2007
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Bolometers
    bolometers
    readout
    Photons
    Vacuum
    Bandwidth
    Imaging techniques
    vacuum
    photons
    room temperature
    bandwidth
    noise temperature
    Electronic equipment
    clutter
    Scanning
    Temperature
    divergence
    impedance
    scanning
    curves

    Keywords

    • Passive imaging
    • Superconducting bolometers
    • THz

    Cite this

    @article{3d5cf5a11d674ac8ad4c7ef650acdb05,
    title = "NbN vacuum bridge bolometer arrays with room temperature readout approaching photon noise limited THz imaging applications",
    abstract = "We study the applicability of superconducting NbN vacuum bridge bolometer arrays with room temperature readout electronics to passive THz imaging applications. We show that sufficient bandwidth for video-rate mechanical scanning in terms of stability and noise can be reached by exploiting the divergences of the bolometer noise temperature and the differential impedance at the I - V curve minimum. Experimental electrical noise equivalent power is 9 fW/Hz1/2. This would correspond to ¡­10 times the photon noise in a bandwidth of 0.5 THz and is comparable to the expected clutter in passive THz images due to atmospheric fluctuations.",
    keywords = "Passive imaging, Superconducting bolometers, THz",
    author = "Panu Helist{\"o} and Jari Penttil{\"a} and Hannu Sipola and Leif Gr{\"o}nberg and F. Maibaum and Arttu Luukanen and Heikki Sepp{\"a}",
    year = "2007",
    doi = "10.1109/TASC.2007.898648",
    language = "English",
    volume = "17",
    pages = "310--313",
    journal = "IEEE Transactions on Applied Superconductivity",
    issn = "1051-8223",
    publisher = "IEEE Institute of Electrical and Electronic Engineers",
    number = "2",

    }

    NbN vacuum bridge bolometer arrays with room temperature readout approaching photon noise limited THz imaging applications. / Helistö, Panu; Penttilä, Jari; Sipola, Hannu; Grönberg, Leif; Maibaum, F.; Luukanen, Arttu; Seppä, Heikki.

    In: IEEE Transactions on Applied Superconductivity, Vol. 17, No. 2, 2007, p. 310-313.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - NbN vacuum bridge bolometer arrays with room temperature readout approaching photon noise limited THz imaging applications

    AU - Helistö, Panu

    AU - Penttilä, Jari

    AU - Sipola, Hannu

    AU - Grönberg, Leif

    AU - Maibaum, F.

    AU - Luukanen, Arttu

    AU - Seppä, Heikki

    PY - 2007

    Y1 - 2007

    N2 - We study the applicability of superconducting NbN vacuum bridge bolometer arrays with room temperature readout electronics to passive THz imaging applications. We show that sufficient bandwidth for video-rate mechanical scanning in terms of stability and noise can be reached by exploiting the divergences of the bolometer noise temperature and the differential impedance at the I - V curve minimum. Experimental electrical noise equivalent power is 9 fW/Hz1/2. This would correspond to ¡­10 times the photon noise in a bandwidth of 0.5 THz and is comparable to the expected clutter in passive THz images due to atmospheric fluctuations.

    AB - We study the applicability of superconducting NbN vacuum bridge bolometer arrays with room temperature readout electronics to passive THz imaging applications. We show that sufficient bandwidth for video-rate mechanical scanning in terms of stability and noise can be reached by exploiting the divergences of the bolometer noise temperature and the differential impedance at the I - V curve minimum. Experimental electrical noise equivalent power is 9 fW/Hz1/2. This would correspond to ¡­10 times the photon noise in a bandwidth of 0.5 THz and is comparable to the expected clutter in passive THz images due to atmospheric fluctuations.

    KW - Passive imaging

    KW - Superconducting bolometers

    KW - THz

    U2 - 10.1109/TASC.2007.898648

    DO - 10.1109/TASC.2007.898648

    M3 - Article

    VL - 17

    SP - 310

    EP - 313

    JO - IEEE Transactions on Applied Superconductivity

    JF - IEEE Transactions on Applied Superconductivity

    SN - 1051-8223

    IS - 2

    ER -