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A 25-micron single photon sensitive kinetic inductance detector

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arxiv 2404.10246 v3 pith:7OSPQH6V submitted 2024-04-16 astro-ph.IM physics.ins-det

Peter K. Day , Nicholas F. Cothard , Christopher Albert , Logan Foote , Elijah Kane , Byeong H. Eom , Ritoban Basu Thakur , Reinier M.J. Janssen
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Andrew Beyer Pierre Echternach Sven van Berkel Steven Hailey-Dunsheath Thomas R. Stevenson Shahab Dabironezare Jochem J.A. Baselmans Jason Glenn C. Matt Bradford Henry G. Leduc
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classification astro-ph.IMphysics.ins-det
keywords opticaldetectordetectorspowerinductancekineticmicronmode
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We report measurements characterizing the performance of a kinetic inductance detector array designed for a wavelength of 25 microns and very low optical background level suitable for applications such as a far-infrared instrument on a cryogenically cooled space telescope. In a pulse counting mode of operation at low optical flux, the detectors can resolve individual 25-micron photons. In an integrating mode, the detectors remain photon noise limited over more than six orders of magnitude in absorbed power from 70 zW to 200 fW, with a limiting NEP of 4.6 x 10^-20 W/rtHz at 1 Hz. In addition, the detectors are highly stable with flat power spectra under optical load down to 1 mHz. Operational parameters of the detector are determined including the efficiency of conversion of the incident optical power into quasiparticles in the aluminum absorbing element and the quasiparticle self-recombination constant.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. PRIMA: PRIMAger, a far-infrared hyperspectral and polarimetric instrument

    astro-ph.IM 2025-09 accept novelty 6.0 of 10

    A design study for PRIMAger, the PRIMA far-infrared imager, which combines an R=8 hyperspectral channel (24-84 µm) and a four-band polarimetric channel (80-264 µm) using KID arrays.

  2. Tunable responsivity and bandwidth in microwave kinetic inductance detectors via readout current nonlinearity

    cond-mat.supr-con 2026-07 accept novelty 5.0 of 10

    Operating an MKID near bifurcation with the tone below resonance yields ~10× optical responsivity via readout-current positive feedback, at the cost of reduced bandwidth.

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