[ { "id": "authors:gcznk-z6203", "collection": "authors", "collection_id": "gcznk-z6203", "cite_using_url": "https://authors.library.caltech.edu/records/gcznk-z6203", "type": "article", "title": "Radiation Total Dose for PRIMA: Cold Exposure With Alpha Particles", "author": [ { "family_name": "Kane", "given_name": "Elijah", "orcid": "0000-0002-2913-9458", "clpid": "Kane-Elijah" }, { "family_name": "Albert", "given_name": "Chris", "orcid": "0000-0001-5077-3093", "clpid": "Albert-Chris" }, { "family_name": "Beyer", "given_name": "Andrew", "orcid": "0000-0002-1045-1652", "clpid": "Beyer-Andrew" }, { "family_name": "Bradford", "given_name": "Charles", "orcid": "0000-0001-5261-7094", "clpid": "Bradford-C-M" }, { "family_name": "Echternach", "given_name": "Pierre", "orcid": "0000-0001-9643-5110", "clpid": "Echternach-Pierre" }, { "family_name": "Foote", "given_name": "Logan", "orcid": "0000-0002-4162-8609", "clpid": "Foote-Logan" }, { "family_name": "Glenn", "given_name": "Jason", "orcid": "0000-0001-7527-2017" }, { "family_name": "LeDuc", "given_name": "Henry", "orcid": "0000-0002-6721-5271", "clpid": "LeDuc-Henry" }, { "family_name": "Nguyen", "given_name": "Hien", "clpid": "Nguyen-Hien" }, { "family_name": "Stevenson", "given_name": "Thomas", "orcid": "0000-0001-6221-2357" }, { "family_name": "Zhu", "given_name": "Brian", "orcid": "0000-0001-7805-9991", "clpid": "Zhu-Brian" }, { "family_name": "Zmuidzinas", "given_name": "Jonas", "orcid": "0000-0002-3330-5439", "clpid": "Zmuidzinas-J" } ], "abstract": "

The probe far-infrared mission for astrophysics (PRIMA) is a far-infrared (24–261 μm wavelengths) probe-class space observatory currently under Phase A study, which promises orders-of-magnitude improvement in mapping speed over its predecessors. PRIMA will field exquisitely sensitive (NEP < 0.1 aW Hz^(−1/2)) kilopixel arrays of kinetic inductance detectors (KIDs) for the Far-Infrared Enhanced Survey Spectrometer (FIRESS) instrument. PRIMA will orbit in space at the Sun–Earth L2 point, where Planck (Ade et al. 2004) found the energetic particle flux to be about 300/min/cm². Thus, the possible effect of a high fluence of energetic particles on the detector sensitivity must be characterized. Previous work has suggested that bombardment of KIDs by ions can reduce the quasiparticle lifetime (Barends et al. 2009), but the conditions of the experiment were not representative of a detector which is continuously held at sub-Kelvin temperatures in the energetic particle environment of L2 orbit. To better replicate the damage which would be produced by energetic particles in this environment, we developed a fully cryogenic irradiation experiment in which a stepper motor controls a screen that can block or reveal an alpha particle emitter. This setup can be used to irradiate aluminum KID arrays fabricated for FIRESS to well-controlled dose levels. In this work, we calculate the damage dose expected for a five-year mission in L2 orbit, and we irradiate an array to approximately 62% of this level. Before and after irradiation, we measure the quasiparticle lifetimes, resonant frequencies, and quality factors of the detectors.

", "doi": "10.1109/tasc.2026.3666788", "issn": "1051-8223", "publisher": "IEEE", "publication": "IEEE Transactions on Applied Superconductivity", "publication_date": "2026-09", "series_number": "6", "volume": "36", "issue": "6", "pages": "1-6" }, { "id": "authors:73mnr-qpb49", "collection": "authors", "collection_id": "73mnr-qpb49", "cite_using_url": "https://authors.library.caltech.edu/records/73mnr-qpb49", "type": "article", "title": "Characterization of a Far-Infrared Kinetic Inductance Detector Prototype for PRIMA", "author": [ { "family_name": "Hailey-Dunsheath", "given_name": "Steven", "orcid": "0000-0002-8504-7988", "clpid": "Hailey-Dunsheath-S" }, { "family_name": "van Berkel", "given_name": "Sven" }, { "family_name": "Beyer", "given_name": "Andrew D." }, { "family_name": "Foote", "given_name": "Logan", "orcid": "0000-0002-4162-8609", "clpid": "Foote-Logan" }, { "family_name": "Janssen", "given_name": "Reinier M. J." }, { "family_name": "LeDuc", "given_name": "Henry G." }, { "family_name": "Echternach", "given_name": "Pierre M." }, { "family_name": "Bradford", "given_name": "Charles M." }, { "family_name": "Baselmans", "given_name": "Jochem J. A." }, { "family_name": "Dabironezare", "given_name": "Shahab" }, { "family_name": "Day", "given_name": "Peter K." }, { "family_name": "Cothard", "given_name": "Nicholas F." }, { "family_name": "Glenn", "given_name": "Jason" } ], "abstract": "

The PRobe far-Infrared Mission for Astrophysics (PRIMA) is under study as a potential far-IR space mission, featuring actively cooled optics, and both imaging and spectroscopic instrumentation. To fully take advantage of the low background afforded by a cold telescope, spectroscopy with PRIMA requires detectors with a noise equivalent power (NEP) better than 1×10−19 W Hz−1/2. To meet this goal, we are developing large format arrays of kinetic inductance detectors (KIDs) to work across the 25–250 μm range. Here, we present the design and characterization of a single pixel prototype detector optimized for 210 μm. The KID consists of a lens-coupled aluminum inductor-absorber connected to a niobium interdigitated capacitor to form a 2 GHz resonator. We have fabricated a small array with 28 KIDs, and we measure the performance of one of these detectors with an optical loading in the 0.01–300 aW range. At low loading, the detector achieves an NEP of 9×10−20 W Hz−1/2 at a 10 Hz readout frequency. An extrapolation of these measurements suggests this detector may remain photon noise limited at up to 20 fW of loading, offering a high dynamic range for PRIMA observations of bright astronomical sources.

", "doi": "10.1109/tthz.2024.3454436", "issn": "2156-342X", "publisher": "IEEE", "publication": "IEEE Transactions on Terahertz Science and Technology", "publication_date": "2025-07", "series_number": "4", "volume": "15", "issue": "4", "pages": "546 - 557" }, { "id": "authors:qxkag-xvs52", "collection": "authors", "collection_id": "qxkag-xvs52", "cite_using_url": "https://authors.library.caltech.edu/records/qxkag-xvs52", "type": "article", "title": "A 25-micrometer Single-Photon-Sensitive Kinetic Inductance Detector", "author": [ { "family_name": "Day", "given_name": "Peter K.", "orcid": "0000-0002-3670-9017" }, { "family_name": "Cothard", "given_name": "Nicholas F.", "orcid": "0000-0002-6151-6292" }, { "family_name": "Albert", "given_name": "Christopher", "clpid": "Albert-Christopher" }, { "family_name": "Foote", "given_name": "Logan", "orcid": "0000-0002-4162-8609", "clpid": "Foote-Logan" }, { "family_name": "Kane", "given_name": "Elijah", "clpid": "Kane-Elijah" }, { "family_name": "Eom", "given_name": "Byeong H.", "orcid": "0000-0002-0976-0861" }, { "family_name": "Basu Thakur", "given_name": "Ritoban", "orcid": "0000-0002-3351-3078" }, { "family_name": "Janssen", "given_name": "Reinier M.\u2009J.", "orcid": "0000-0001-9122-9668" }, { "family_name": "Beyer", "given_name": "Andrew", "orcid": "0000-0002-1045-1652" }, { "family_name": "Echternach", "given_name": "Pierre M.", "orcid": "0000-0001-9643-5110" }, { "family_name": "van Berkel", "given_name": "Sven", "orcid": "0000-0002-0088-768X" }, { "family_name": "Hailey-Dunsheath", "given_name": "Steven", "orcid": "0000-0002-8504-7988", "clpid": "Hailey-Dunsheath-S" }, { "family_name": "Stevenson", "given_name": "Thomas R." }, { "family_name": "Dabironezare", "given_name": "Shahab", "orcid": "0000-0002-9032-2227" }, { "family_name": "Baselmans", "given_name": "Jochem J.\u2009A.", "orcid": "0000-0002-3385-7305" }, { "family_name": "Glenn", "given_name": "Jason", "orcid": "0000-0001-7527-2017" }, { "family_name": "Bradford", "given_name": "C. Matt" }, { "family_name": "Leduc", "given_name": "Henry G." } ], "abstract": "

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 6 orders of magnitude in absorbed power from 70 zW to 200 fW, with a limiting noise equivalent power of 4.6×10−20  W Hz−1 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.

", "doi": "10.1103/physrevx.14.041005", "issn": "2160-3308", "publisher": "American Physical Society", "publication": "Physical Review X", "publication_date": "2024-10/2024-12", "series_number": "4", "volume": "14", "issue": "4", "pages": "041005" }, { "id": "authors:sj7yw-6kz79", "collection": "authors", "collection_id": "sj7yw-6kz79", "cite_using_url": "https://authors.library.caltech.edu/records/sj7yw-6kz79", "type": "conference_item", "title": "Spatial mapping of kilopixel kinetic inductance detector arrays for PRIMA", "book_title": "Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII", "author": [ { "family_name": "Albert", "given_name": "Chris", "clpid": "Albert-Chris" }, { "family_name": "Basu Thakur", "given_name": "Ritoban", "orcid": "0000-0002-3351-3078", "clpid": "Basu-Thakur-Ritoban" }, { "family_name": "Bradford", "given_name": "Charles M.", "orcid": "0000-0001-5261-7094", "clpid": "Bradford-C-M" }, { "family_name": "Cothard", "given_name": "Nicholas F.", "orcid": "0000-0002-6151-6292" }, { "family_name": "Day", "given_name": "Peter K.", "orcid": "0000-0002-3670-9017", "clpid": "Day-Peter-K" }, { "family_name": "Eom", "given_name": "Byeong Ho", "orcid": "0000-0002-0976-0861", "clpid": "Eom-Byeong-Ho" }, { "family_name": "Foote", "given_name": "Logan M.", "orcid": "0000-0002-4162-8609", "clpid": "Foote-Logan" }, { "family_name": "Foote", "given_name": "Marc C.", "clpid": "Foote-Marc-C" }, { "family_name": "Glenn", "given_name": "Jason", "orcid": "0000-0001-7527-2017" }, { "family_name": "Janssen", "given_name": "Reinier", "orcid": "0000-0001-9122-9668", "clpid": "Janssen-Reinier" }, { "family_name": "Kane", "given_name": "Elijah", "clpid": "Kane-Elijah" }, { "family_name": "LeDuc", "given_name": "Henry G.", "orcid": "0000-0002-6721-5271", "clpid": "LeDuc-Henry-G" }, { "family_name": "Nguyen", "given_name": "Hien T.", "clpid": "Nguyen-Hien-T" }, { "family_name": "Zmuidzinas", "given_name": "Jonas", "orcid": "0000-0002-3330-5439", "clpid": "Zmuidzinas-J" } ], "editor": [ { "family_name": "Zmuidzinas", "given_name": "Jonas" }, { "family_name": "Gao", "given_name": "Jian-Rong" } ], "abstract": "We present a characterization of the mapping from resonant frequency to spatial position for a kilopixel kinetic inductance detector (KID) array developed for the Probe far-Infrared Mission for Astrophysics (PRIMA). This work targets the longest wavelength band of PRIMA's FIRESS spectrometer, which in total spans 24 to 235 \u03bcm. Light emitting diodes arrayed to match repeating unit cells of 16 KIDs first discriminate among unit cells. Within each unit cell, frequencies are widely spaced, so positions are discriminated by theoretical predictions of the relative frequency spacing between detectors based on KID geometries. With this mapping, we analyze board features to improve the accuracy of modeling PRIMA KIDs and inform future fabrication runs.", "doi": "10.1117/12.3020503", "isbn": "9781510675278", "publisher": "SPIE", "place_of_publication": "Bellingham, WA", "publication_date": "2024-08-16", "pages": "131021N" }, { "id": "authors:hnmyx-er004", "collection": "authors", "collection_id": "hnmyx-er004", "cite_using_url": "https://authors.library.caltech.edu/records/hnmyx-er004", "type": "conference_item", "title": "Development of an ultra-sensitive 210-micron array of KIDs for far-IR astronomy", "book_title": "Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII", "author": [ { "family_name": "Kane", "given_name": "Elijah", "clpid": "Kane-Elijah" }, { "family_name": "Albert", "given_name": "Chris", "clpid": "Albert-Chris" }, { "family_name": "Cothard", "given_name": "Nicholas F.", "orcid": "0000-0002-6151-6292" }, { "family_name": "Hailey-Dunsheath", "given_name": "Steve", "orcid": "0000-0002-8504-7988", "clpid": "Hailey-Dunsheath-S" }, { "family_name": "Echternach", "given_name": "Pierre M.", "orcid": "0000-0001-9643-5110", "clpid": "Echternach-Pierre-M" }, { "family_name": "Foote", "given_name": "Logan M.", "orcid": "0000-0002-4162-8609", "clpid": "Foote-Logan" }, { "family_name": "Janssen", "given_name": "Reinier M. J.", "orcid": "0000-0001-9122-9668", "clpid": "Janssen-Reinier-M-J" }, { "family_name": "LeDuc", "given_name": "Henry G.", "orcid": "0000-0002-6721-5271", "clpid": "LeDuc-Henry-G" }, { "family_name": "Liu", "given_name": "Lun-Jun", "orcid": "0009-0004-1270-2373", "clpid": "Liu-Lun-Jun" }, { "family_name": "Nguyen", "given_name": "Hien T.", "clpid": "Nguyen-Hien-T" }, { "family_name": "Glenn", "given_name": "Jason", "orcid": "0000-0001-7527-2017" }, { "family_name": "Bradford", "given_name": "Charles M.", "orcid": "0000-0001-5261-7094", "clpid": "Bradford-C-M" }, { "family_name": "Zmuidzinas", "given_name": "Jonas", "orcid": "0000-0002-3330-5439", "clpid": "Zmuidzinas-J" } ], "editor": [ { "family_name": "Zmuidzinas", "given_name": "Jonas" }, { "family_name": "Gao", "given_name": "Jian-Rong" } ], "abstract": "
\n
The Probe far-Infrared Mission for Astrophysics (PRIMA) is a proposed space observatory which will use arrays of thousands of kinetic inductance detectors (KIDs) to perform low- and moderate-resolution spectroscopy throughout the far-infrared. The detectors must have noise equivalent powers (NEPs) at or below 1×10−19 W Hz−1/2 to be subdominant to noise from sky backgrounds and thermal noise from PRIMA’s cryogenically cooled primary mirror. Using a Radio Frequency System on a Chip for multitone readout, we measure the NEPs of detectors on a flight-like array designed to observe at a wavelength of 210 μm. We find that 92% of the KIDs measured have an NEP below 1 × 10−19 W Hz−1/2 at a noise frequency of 10 Hz.
\n
", "doi": "10.1117/12.3020346", "isbn": "9781510675278", "publisher": "SPIE", "place_of_publication": "Bellingham, WA", "publication_date": "2024-08-16", "pages": "131021K" }, { "id": "authors:2e09p-hjt94", "collection": "authors", "collection_id": "2e09p-hjt94", "cite_using_url": "https://authors.library.caltech.edu/records/2e09p-hjt94", "type": "conference_item", "title": "Highly sensitive far-IR KIDs for PRIMA: optical characterization of a 25-micron array", "book_title": "Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII", "author": [ { "family_name": "Foote", "given_name": "Logan M.", "orcid": "0000-0002-4162-8609", "clpid": "Foote-Logan" }, { "family_name": "Albert", "given_name": "Chris", "clpid": "Albert-Chris" }, { "family_name": "Basu Thakur", "given_name": "Ritoban", "orcid": "0000-0002-3351-3078", "clpid": "Basu-Thakur-Ritoban" }, { "family_name": "Day", "given_name": "Peter K.", "orcid": "0000-0002-3670-9017" }, { "family_name": "Cothard", "given_name": "Nicholas F.", "orcid": "0000-0002-6151-6292", "clpid": "Cothard-Nicholas-F" }, { "family_name": "Hailey-Dunsheath", "given_name": "Steve", "orcid": "0000-0002-8504-7988", "clpid": "Hailey-Dunsheath-S" }, { "family_name": "Echternach", "given_name": "Pierre M.", "orcid": "0000-0001-9643-5110", "clpid": "Echternach-Pierre-M" }, { "family_name": "Eom", "given_name": "Byeong Ho", "orcid": "0000-0002-0976-0861", "clpid": "Eom-Byeong-Ho" }, { "family_name": "Janssen", "given_name": "Reinier M. J.", "orcid": "0000-0001-9122-9668", "clpid": "Janssen-Reinier-M-J" }, { "family_name": "Kane", "given_name": "Elijah", "clpid": "Kane-Elijah" }, { "family_name": "Leduc", "given_name": "Henry G.", "orcid": "0000-0002-6721-5271", "clpid": "Leduc-Henry-G" }, { "family_name": "Liu", "given_name": "Lun-Jun", "orcid": "0009-0004-1270-2373", "clpid": "Liu-Lun-Jun" }, { "family_name": "Nguyen", "given_name": "Hien T.", "clpid": "Nguyen-Hien-T" }, { "family_name": "Glenn", "given_name": "Jason", "orcid": "0000-0001-7527-2017" }, { "family_name": "Bradford", "given_name": "Charles M.", "orcid": "0000-0001-5261-7094", "clpid": "Bradford-C-M" }, { "family_name": "Zmuidzinas", "given_name": "Jonas", "orcid": "0000-0002-3330-5439", "clpid": "Zmuidzinas-J" } ], "editor": [ { "family_name": "Zmuidzinas", "given_name": "Jonas" }, { "family_name": "Gao", "given_name": "Jian-Rong" } ], "abstract": "
\n
The PRobe far-Infrared Mission for Astrophysics (PRIMA) is a future cryogenic space observatory that will revolutionize study of evolving galaxies and forming planetary systems with highly-sensitive far-infrared (far-IR) imaging and spectroscopy. PRIMA’s spectrometer, the Far-InfraRed Enhanced Survey Spectrometer (FIRESS), will deploy kilo-pixel aluminum kinetic inductance detector (KID) arrays covering wavelengths from 24-235 μm. Here we present optical characterization of a prototype FIRESS array operating at 25 μm. We employ a blackbody modulation technique to measure the detector responsivity, and discuss methods for reducing 1/f noise from the multi-tone readout electronics. We measure an NEP below 3.5 × 10−20 W/ √ Hz at 10 Hz accross the array, which exceeds the requirement to be limited by the astrophysical background limit for PRIMA’s FIRESS spectrometer. We discuss limitations of the multi-tone readout and compare results to measurements with a single-tone readout system.
\n
", "doi": "10.1117/12.3020228", "isbn": "9781510675278", "publisher": "SPIE", "place_of_publication": "Bellingham, WA", "publication_date": "2024-08-16", "pages": "131020D" }, { "id": "authors:bzyyn-vrz28", "collection": "authors", "collection_id": "bzyyn-vrz28", "cite_using_url": "https://authors.library.caltech.edu/records/bzyyn-vrz28", "type": "article", "title": "Modeling of Cosmic Rays and Near-IR Photons in Aluminum KIDs", "author": [ { "family_name": "Kane", "given_name": "Elijah", "orcid": "0000-0002-2913-9458", "clpid": "Kane-Elijah" }, { "family_name": "Albert", "given_name": "Chris", "orcid": "0000-0001-5077-3093", "clpid": "Albert-Chris" }, { "family_name": "Baselmans", "given_name": "Jochem", "orcid": "0000-0002-3385-7305" }, { "family_name": "Basu Thakur", "given_name": "Ritoban", "orcid": "0000-0002-3351-3078", "clpid": "Basu-Thakur-Ritoban" }, { "family_name": "Bradford", "given_name": "Charles", "orcid": "0000-0001-5261-7094", "clpid": "Bradford-C-M" }, { "family_name": "Cothard", "given_name": "Nicholas", "orcid": "0000-0002-6151-6292" }, { "family_name": "Day", "given_name": "Peter", "orcid": "0000-0002-3670-9017", "clpid": "Day-Peter" }, { "family_name": "Foote", "given_name": "Logan", "orcid": "0000-0002-4162-8609", "clpid": "Foote-Logan" }, { "family_name": "Hailey-Dunsheath", "given_name": "Steven", "orcid": "0000-0002-8504-7988", "clpid": "Hailey-Dunsheath-S" }, { "family_name": "Janssen", "given_name": "Reinier", "orcid": "0000-0001-9122-9668", "clpid": "Janssen-Reinier" }, { "family_name": "LeDuc", "given_name": "Henry", "orcid": "0000-0002-6721-5271", "clpid": "LeDuc-Henry" }, { "family_name": "Liu", "given_name": "Lun-Jun", "orcid": "0009-0004-1270-2373", "clpid": "Liu-Lun-Jun" }, { "family_name": "Nguyen", "given_name": "Hien", "clpid": "Nguyen-Hien" }, { "family_name": "Zmuidzinas", "given_name": "Jonas", "orcid": "0000-0002-3330-5439", "clpid": "Zmuidzinas-J" } ], "abstract": "

The PRobe far-Infrared Mission for Astrophysics (PRIMA) is working to develop kinetic inductance detectors (KIDs) that can meet the sensitivity targets of a far-infrared spectrometer on a cryogenically cooled space telescope. An important ingredient for achieving high sensitivity is increasing the fractional-frequency responsivity. Here, we present a study of the responsivity of aluminum KIDs fabricated at the Jet Propulsion Laboratory. Specifically, we model the KID's temporal response to pair-breaking excitations in the framework of the Mattis–Bardeen theory, incorporating quasiparticle recombination dynamics and the pair-breaking efficiency. Using a near-IR laser, we measure time-resolved photon pulses and fit them to our model, extracting the time-resolved quasiparticle density and the quasiparticle recombination lifetime. Comparing the fit to the known energy of the laser provides a measurement of the pair-breaking efficiency. In addition to photon-sourced excitations, it is important to understand the KID's response to phonon-sourced excitations from cosmic rays. We measure the rate of secondary cosmic rays detected by our devices and predict the dead time due to cosmic rays for an array in L2 orbit. This work provides confidence in KIDs' robustness to cosmic ray events in the space environment.

", "doi": "10.1007/s10909-023-03044-3", "issn": "0022-2291", "publisher": "Springer Science and Business Media LLC", "publication": "Journal of Low Temperature Physics", "publication_date": "2024-02", "series_number": "3-4", "volume": "214", "issue": "3-4", "pages": "238-246" }, { "id": "authors:a42mr-bv292", "collection": "authors", "collection_id": "a42mr-bv292", "cite_using_url": "https://authors.library.caltech.edu/records/a42mr-bv292", "type": "article", "title": "High-sensitivity transition-edge-sensed bolometers: Improved speed and characterization with AC and DC bias", "author": [ { "family_name": "Foote", "given_name": "Logan", "orcid": "0000-0002-4162-8609", "clpid": "Foote-Logan" }, { "family_name": "Audley", "given_name": "Michael D.", "orcid": "0000-0003-0682-5372", "clpid": "Audley-Michael-D" }, { "family_name": "Bradford", "given_name": "Charles (Matt)", "orcid": "0000-0001-5261-7094", "clpid": "Bradford-Charles-Matt" }, { "family_name": "de Lange", "given_name": "Gert", "orcid": "0000-0002-9420-3022", "clpid": "de-Lange-Gert" }, { "family_name": "Echternach", "given_name": "Pierre", "orcid": "0000-0001-9643-5110", "clpid": "Echternach-Pierre" }, { "family_name": "Fixsen", "given_name": "Dale J.", "clpid": "Fixsen-Dale-J" }, { "family_name": "Hui", "given_name": "Howard", "orcid": "0000-0001-5812-1903", "clpid": "Hui-Howard" }, { "family_name": "Kenyon", "given_name": "Matthew", "clpid": "Kenyon-Matthew" }, { "family_name": "Nguyen", "given_name": "Hien", "clpid": "Nguyen-Hien" }, { "family_name": "O'Brient", "given_name": "Roger", "orcid": "0000-0002-4987-6375", "clpid": "O'Brient-Roger" }, { "family_name": "Sharp", "given_name": "Elmer H.", "orcid": "0009-0006-6249-0350", "clpid": "Sharp-Elmer-H" }, { "family_name": "Staguhn", "given_name": "Johannes G.", "orcid": "0000-0002-8437-0433", "clpid": "Staguhn-Johannes-G" }, { "family_name": "van der Kuur", "given_name": "Jan", "orcid": "0000-0002-0082-6641", "clpid": "van-der-Kuur-Jan" }, { "family_name": "Zmuidzinas", "given_name": "Jonas", "orcid": "0000-0002-3330-5439", "clpid": "Zmuidzinas-J" } ], "abstract": "We report on efforts to improve the speed of low-G far-infrared transition-edged-sensed bolometers. We use a fabrication process that does not require any dry etch steps to reduce heat capacity on the suspended device and measure a reduction in the detector time constant. However, we also measure an increase in the temperature-normalized thermal conductance (G) and a corresponding increase in the noise-equivalent power (NEP). We employ a new near-IR photon-noise technique using a near-IR laser to calibrate the frequency-domain multiplexed AC system and compare the results to a well-understood DC circuit. We measure an NEP white noise level of 0.8\u2009aW/rtHz with a 1/f knee below 0.1\u2009Hz and a time constant of 3.2\u2009ms.", "doi": "10.1063/5.0157208", "issn": "0021-8979", "publisher": "American Institute of Publishing", "publication": "Journal of Applied Physics", "publication_date": "2023-09-07", "series_number": "9", "volume": "134", "issue": "9", "pages": "094503" } ]