Sensitivity of LEKID for space applications between 80 GHz and 600 GHz

Catalano, A.; Bideaud, A.; Bourrion, O.; Calvo, M.; Fasano, A.; Goupy, J.; Lévy-Bertrand, F.; Macías-Pérez, J. F.; Tang, Q. Y.; Monfardini, A.

doi:10.1051/0004-6361/202038199

Cited by 18 publications

(14 citation statements)

References 22 publications

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“…A standard protocol to quantify the efficiency of a photon detector is to evaluate its noise equivalent power 10,25,31,32 (NEP) which corresponds to the signal power producing a signal-to-noise ratio of one in a one Hertz output bandwidth. NEP is defined in this case as:…”

Section: Resultsmentioning

confidence: 99%

Subgap kinetic inductance detector sensitive to 85-GHz radiation

Levy-Bertrand,

Benoît,

Bourrion

et al. 2020

Preprint

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We have fabricated an array of Sub-gap Kinetic Inductance Detectors (SKIDs) made of granular aluminum (Tc ∼2 K) sensitive in the 80-90 GHz frequency band and operating at 300 mK. We measured a noise equivalent power of 1.3 × 10 −16 W/Hz 0.5 on average and 2.6 × 10 −17 W/Hz 0.5 at best, for an illuminating power of 50 fW per pixel. Even though the circuit design of SKIDs is identical to that of the Kinetic Inductance Detectors (KIDs), the SKIDs operating principle is based on their sensitivity to sub-gap excitations. This detection scheme is advantageous because it avoids having to lower the operating temperature proportionally to the lowest detectable frequency. The SKIDs presented here are intrinsically selecting the 80-90 GHz frequency band, well below the superconducting spectral gap of the film, at approximately 180 GHz.

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Section: Resultsmentioning

confidence: 99%

Subgap kinetic inductance detector sensitive to 85-GHz radiation

Levy-Bertrand,

Benoît,

Bourrion

et al. 2020

Preprint

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“…Its time constant is fixed by the recombination time of the quasi-particles (a few tens of µs). This represents a major advantage with respect to the other detectors, which are a factor 10 slower (e.g., thermal bolometers and transition-edge sensor, TES, Catalano et al 2020).…”

Section: Appendix A: Kid Propertiesmentioning

confidence: 99%

Accurate sky signal reconstruction for ground-based spectroscopy with kinetic inductance detectors

Fasano

Macías-Pérez

Benoı̂t

et al. 2021

A&A

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Context. Wide-field spectrometers are needed to deal with current astrophysical challenges that require multiband observations at millimeter wavelengths. An example of these is the KIDs Interferometer Spectrum Survey (KISS), which uses two arrays of kinetic inductance detectors (KIDs) coupled to a Martin-Puplett interferometer (MPI). KISS has a wide instantaneous field of view (1 deg in diameter) and a spectral resolution of up to 1.45 GHz in the 120-180 GHz electromagnetic band. The instrument is installed on the 2.25 m Q-U-I JOint TEnerife telescope at the Teide Observatory (Tenerife, Canary Islands), at an altitude of 2 395 m above sea level. Aims. This work presents an original readout modulation method developed to improve the sky signal reconstruction accuracy for types of instruments for which a fast sampling frequency is required, both to remove atmospheric fluctuations and to perform full spectroscopic measurements on each sampled sky position. Methods. We first demonstrate the feasibility of this technique using simulations. We then apply such a scheme to on-sky calibration. Results. We show that the sky signal can be reconstructed to better than 0.5 % for astrophysical sources, and to better than 2 % for large background variations such as in "skydip", in an ideal noiseless scenario. The readout modulation method is validated by observations on-sky during the KISS commissioning campaign. Conclusions. We conclude that accurate photometry can be obtained for future KID-based interferometry using the MPI.

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“…The case of ground-based experiments has an additional requirement: the atmospheric fluctuations have to be addressed. For this purpose, FTSs have to be coupled with fast detectors, and kinetic inductance detectors (KIDs) are the fastest available in large format arrays at mm-wavelength [4,5].…”

Section: Introductionmentioning

confidence: 99%

Observations with KIDs Interferometer Spectrum Survey (KISS)

et al. 2022

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We describe the preliminary on-sky results of the KIDs Interferometer Spectrum Survey (KISS), a spectral imager with a 1 deg field of view (FoV). The instrument operates in the range 120–180 GHz from the 2.25m Q-U-I JOint TEnerife telescope in Teide Observatory (Tenerife, Canary Islands), at 2 395m altitude above sea level. Spectra at low resolution, up to 1.45 GHz, are obtained using a fast (3.72 Hz mechanical frequency) Fourier transform spectrometer, coupled to a continuous dilution cryostat with a stabilized temperature of 170mK that hosts two 316-pixel arrays of lumped-element kinetic inductance detectors. KISS generates more than 3 000 spectra per second during observations and represents a pathfinder to demonstrate the potential for spectral mapping with large FoV.We give an overall description of the spectral mapping paradigm and we present recent results from observations, in this paper.

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Sensitivity of LEKID for space applications between 80 GHz and 600 GHz

Cited by 18 publications

References 22 publications

Subgap kinetic inductance detector sensitive to 85-GHz radiation

Subgap kinetic inductance detector sensitive to 85-GHz radiation

Accurate sky signal reconstruction for ground-based spectroscopy with kinetic inductance detectors

Observations with KIDs Interferometer Spectrum Survey (KISS)

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