Publicaties

Substellar companions such as exoplanets and brown dwarfs exhibit changes in brightness arising from top-of-atmosphere inhomogeneities, providing insights into their atmospheric structure and dynamics. This variability can be measured in…

Authors: Sutlieff, Doelman, Birkby, Kenworthy, Stone, Snik, Ertel, Biller, Woodward, Skemer, Leisenring, Bohn, Parker

Bibcode: 2025MNRAS.544.3191S

DOI: 10.1093/mnras/staf1909

DOI 2: 10.48550/arXiv.2511.01384

Lees meer

The presence of quasiparticles typically degrades the performance of superconducting microwave circuits. The readout signal can generate nonequilibrium quasiparticles, which lead to excess microwave loss and decoherence. To understand this…

Authors: de Rooij, Baselmans, Bueno, Murugesan, Thoen, de Visser

Bibcode: 2025PhRvP..24b4007D

DOI: 10.1103/6h78-ypgn

DOI 2: 10.48550/arXiv.2503.07443

Lees meer

The Astro2020 Decadal Survey recommended a new line of astrophysics observatories intermediate in scale between MIDEXs and Flagship-class observatories. In response, NASA created the Astrophysics Probe Explorer class and solicited…

Authors: Glenn, Meixner, Bradford, Pontoppidan, Pope, Kataria, Rocca, Luthman, Armus, Baselmans, Battersby, Bollato, Burgarella, Chen, Ciesla, Day, Di Giorgio, Dipirro, Dowell, Echternach, Essinger-Hileman, Foote, Gruppioni, Hensley, Henning, Jellema, Johnson, Kogut, Krause,…

Bibcode: 2025JATIS..11c1628G

DOI: 10.1117/1.JATIS.11.3.031628

Lees meer

We present the science drivers for the far-infrared enhanced survey spectrometer (FIRESS), one of two science instruments on the PRobe Infrared Mission for Astrophysics. FIRESS is designed to meet science…

Authors: Pontoppidan, Bolatto, Smith, Bradford, Battersby, Pope, Kataria, Glenn, Meixner, Armus, Baselmans, Bergin, Burgarella, Ciesla, Ilsedore Cleeves, Di Giorgio, Gruppioni, Henning, Hensley, Jellema, Krause, Mills, Moullet, Sauvage, Somerville, Staguhn, Unwin

Bibcode: 2025JATIS..11c1635P

DOI: 10.1117/1.JATIS.11.3.031635

DOI 2: 10.48550/arXiv.2509.01800

Lees meer

We developed, characterized, and verified an alignment procedure for the DESHIMA 2.0 instrument, an ultra-wide-band spectrometer operating between 200 and 400 GHz, at the ASTE telescope. To this end, we…

Authors: Moerman, Karatsu, Baselmans, Dabironezare, Fujita, Huiting, Kohno, Nishimura, Steenvoorde, Takekoshi, Tamura, Taniguchi, Yates, Brandl, Endo

Bibcode: 2025JATIS..11b5007M

DOI: 10.1117/1.JATIS.11.2.025007

DOI 2: 10.48550/arXiv.2501.14478

Lees meer

The combination of detection techniques enhances our ability to identify companions orbiting nearby stars. We employed high-contrast imaging to constrain mass and separation of possible companions responsible for the significant…

Authors: Mesa, Gratton, D'Orazi, Carolo, Vassallo, Farinato, Marafatto, Wagner, Hom, Ertel, Henning, Desgrange, Barbato, Bergomi, Cerpelloni, Desidera, Di Filippo, Doelman, Machado, Greggio, Grenz, Kenworthy, Laudisio, Lazzoni, Leisenring, Lorenzetto, Santhakumari, Ricci, Snik,…

Bibcode: 2025MNRAS.536.1455M

DOI: 10.1093/mnras/stae2706

DOI 2: 10.48550/arXiv.2412.04171

Lees meer

Low-loss deposited dielectrics are beneficial for the advancement of superconducting integrated circuits for astronomy. In the microwave band (approximately 1-10 GHz) the dielectric loss at cryogenic temperatures and low electric…

Authors: Buijtendorp, Endo, Jellema, Karatsu, Kouwenhoven, Lamers, van der Linden, Rostem, Veen, Wollack, Baselmans, Vollebregt

Bibcode: 2025PhRvP..23a4035B

DOI: 10.1103/PhysRevApplied.23.014035

DOI 2: 10.48550/arXiv.2405.13688

Lees meer

We present significant upgrades to the Visible Aperture-Masking Polarimetric Imager/Interferometer for Resolving Exoplanetary Signatures (VAMPIRES) instrument, a visible-light (600–800 nm) high-contrast imaging polarimeter integrated within SCExAO on the Subaru telescope.…

Authors: Lucas, Norris, Guyon, Bottom, Deo, Vievard, Lozi, Ahn, Ashcraft, Currie, Doelman, Kudo, Leboulleux, Lilley, Millar-Blanchaer, Safonov, Tuthill, Uyama, Walk, Zhang

Bibcode: 2024PASP..136k4504L

DOI: 10.1088/1538-3873/ad89af

DOI 2: 10.48550/arXiv.2410.12199

Lees meer

The time variability and spectra of directly imaged companions provide insight into their physical properties and atmospheric dynamics. We present follow-up R ~ 40 spectrophotometric monitoring of red companion HD…

Authors: Sutlieff, Birkby, Stone, Derkink, Backs, Doelman, Kenworthy, Bohn, Ertel, Snik, Woodward, Ilyin, Skemer, Leisenring, Strassmeier, Wang, Charbonneau, Biller

Bibcode: 2024MNRAS.531.2168S

DOI: 10.1093/mnras/stae1315

DOI 2: 10.48550/arXiv.2405.12271

Lees meer

Authors: Marting, Karatsu, Endo, Baselmans, Laguna

Bibcode: 2024JLTP..tmp..168M

DOI: 10.1007/s10909-024-03162-6

Lees meer

Many superconducting on-chip filter-banks suffer from poor coupling to the detectors behind each filter. This is a problem intrinsic to the commonly used half-wavelength filter, which has a maximum theoretical…

Authors: Marting, Karatsu, Endo, Baselmans, Pascual Laguna

Bibcode: 2024JLTP..tmp...98M

DOI: 10.1007/s10909-024-03118-w

DOI 2: 10.48550/arXiv.2404.11417

Lees meer

Parallel-plate capacitors (PPC) significantly reduce the size of superconducting microwave resonators, reducing the pixel pitch for arrays of single-photon energy-resolving kinetic inductance detectors (KIDs). The frequency noise of KIDs is…

Authors: Kouwenhoven, van Doorn, Buijtendorp, de Rooij, Lamers, Thoen, Murugesan, Baselmans, de Visser

Bibcode: 2024PhRvP..21d4036K

DOI: 10.1103/PhysRevApplied.21.044036

DOI 2: 10.48550/arXiv.2311.12681

Lees meer

Context. Integrated superconducting spectrometers (ISSs) for wide-band submillimeter (submm) astronomy use quasi-optical systems for coupling radiation from the telescope to the instrument. Misalignment in these systems is detrimental to the…

Authors: Moerman, Karatsu, Yates, Huiting, Steenvoorde, Dabironezare, Takekoshi, Baselmans, Brandl, Endo

Bibcode: 2024A&A...684A.161M

DOI: 10.1051/0004-6361/202348525

DOI 2: 10.48550/arXiv.2402.15381

Lees meer

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…

Authors: Kane, Albert, Baselmans, Basu Thakur, Bradford, Cothard, Day, Foote, Hailey-Dunsheath, Janssen, LeDuc, Liu, Nguyen, Zmuidzinas

Bibcode: 2024JLTP..214..238K

DOI: 10.1007/s10909-023-03044-3

DOI 2: 10.48550/arXiv.2311.04859

Lees meer

Large format focal plane arrays (FPAs) of dielectric lenses are promising candidates for wide field-of-view submillimeter imagers. In this work, we optimize the scanning gain of such imagers via shaping…

Authors: Zhang, Dabironezare, Baselmans, Llombart

Bibcode: 2024ITAP...72.1263Z

DOI: 10.1109/TAP.2023.3334391

Lees meer

Understanding telescope pointing (i.e. line of sight) is important for observing the cosmic microwave background (CMB) and astronomical objects. The Moon is a candidate astronomical source for pointing calibration. Although…

Authors: Sueno, Baselmans, Coppens, Génova-Santos, Hattori, Honda, Karatsu, Kutsuma, Lee, Nagasaki, Oguri, Otani, Peel, Suzuki, Tajima, Tanaka, Tsujii, Thoen, Won

Bibcode: 2024PTEP.2024b3F01S

DOI: 10.1093/ptep/ptae011

DOI 2: 10.48550/arXiv.2308.15749

Lees meer

Far-infrared (far-IR) astrophysics missions featuring actively cooled telescopes will offer orders of magnitude observing speed improvement at wavelengths where galaxies and forming planetary systems emit most of their light. The…

Authors: Foote, Albert, Baselmans, Beyer, Cothard, Day, Hailey-Dunsheath, Echternach, Janssen, Kane, Leduc, Liu, Nguyen, Perido, Glenn, Zmuidzinas, Bradford

Bibcode: 2024JLTP..214..219F

DOI: 10.1007/s10909-023-03041-6

DOI 2: 10.48550/arXiv.2311.02175

Lees meer

NASA is engaged in planning for a Habitable Worlds Observatory (HabWorlds ), a coronagraphic space mission to detect rocky planets in habitable zones and establish their habitability. Surface liquid water…

Authors: Vaughan, Gebhard, Bott, Casewell, Cowan, Doelman, Kenworthy, Mazoyer, Millar-Blanchaer, Trees, Stam, Absil, Altinier, Baudoz, Belikov, Bidot, Birkby, Bonse, Brandl, Carlotti, Choquet, van Dam, Desai, Fogarty, Fowler, van Gorkom, Gutierrez, Guyon,…

Bibcode: 2023MNRAS.524.5477V

DOI: 10.1093/mnras/stad2127

DOI 2: 10.48550/arXiv.2307.15137

Lees meer

Kinetic inductance detectors (KIDs) are superconducting energy-resolving detectors, sensitive to single photons from the near-infrared to ultraviolet. We study a hybrid KID design consisting of a β -phase tantalum (β…

Authors: Kouwenhoven, Fan, Biancalani, de Rooij, Karim, Smith, Murugesan, Thoen, Baselmans, de Visser

Bibcode: 2023PhRvP..19c4007K

DOI: 10.1103/PhysRevApplied.19.034007

DOI 2: 10.48550/arXiv.2207.05534

Lees meer

Typical materials for optical Microwave Kinetic Inductance Detetectors (MKIDs) are metals with a natural absorption of $$sim $$ ∼ 30-50% in the visible and near-infrared. To reach high absorption efficiencies…

Authors: Kouwenhoven, Elwakil, Wingerden, Murugesan, Thoen, Baselmans, Visser

Bibcode: 2022JLTP..209.1249K

DOI: 10.1007/s10909-022-02774-0

DOI 2: 10.48550/arXiv.2110.05787

Lees meer

We present a feasibility study for the high-redshift galaxy part of the Science Verification Campaign with the 220-440 GHz deshima 2.0 integrated superconducting spectrometer on the ASTE telescope. The first…

Authors: Rybak, Bakx, Baselmans, Karatsu, Kohno, Takekoshi, Tamura, Taniguchi, van der Werf, Endo

Bibcode: 2022JLTP..209..766R

DOI: 10.1007/s10909-022-02730-y

DOI 2: 10.48550/arXiv.2111.05261

Lees meer

Low-loss deposited dielectrics will benefit superconducting devices such as integrated superconducting spectrometers, superconducting qubits, and kinetic inductance parametric amplifiers. Compared with planar structures, multilayer structures such as microstrips are more…

Authors: Buijtendorp, Vollebregt, Karatsu, Thoen, Murugesan, Kouwenhoven, Hähnle, Baselmans, Endo

Bibcode: 2022PhRvP..18f4003B

DOI: 10.1103/PhysRevApplied.18.064003

DOI 2: 10.48550/arXiv.2110.03500

Lees meer

Integrated superconducting spectrometer (ISS) technology will enable ultra-wideband, integral-field spectroscopy for (sub)millimeter-wave astronomy, in particular, for uncovering the dust-obscured cosmic star formation and galaxy evolution over cosmic time. Here, we…

Authors: Taniguchi, Bakx, Baselmans, Huiting, Karatsu, Llombart, Rybak, Takekoshi, Tamura, Akamatsu, Brackenhoff, Bueno, Buijtendorp, Dabironezare, Doing, Fujii, Fujita, Gouwerok, Hähnle, Ishida, Ishii, Kawabe, Kitayama, Kohno, Kouchi, Maekawa, Matsuda, Murugesan, Nakatsubo, Oshima,…

Bibcode: 2022JLTP..209..278T

DOI: 10.1007/s10909-022-02888-5

DOI 2: 10.48550/arXiv.2110.14656

Lees meer

Aims: Future actively cooled space-borne observatories for the far-infrared, loosely defined as a 1-10 THz band, can potentially reach a sensitivity limited only by background radiation from the Universe. This…

Authors: Baselmans, Facchin, Pascual Laguna, Bueno, Thoen, Murugesan, Llombart, de Visser

Bibcode: 2022A&A...665A..17B

DOI: 10.1051/0004-6361/202243840

DOI 2: 10.48550/arXiv.2207.08647

Lees meer

Superconducting resonators and transmission lines are fundamental building blocks of integrated circuits for millimeter-submillimeter (mm-submm) astronomy. Accurate simulation of radiation loss from the circuit is crucial for the design of…

Authors: Endo, Pascual Laguna, Hähnle, Karatsu, Thoen, Murugesan, Baselmans

Bibcode: 2022JATIS...8c6005E

DOI: 10.1117/1.JATIS.8.3.036005

Lees meer

This communication proposes a broadband and efficient integrated focal plane array solution based on a near-field focused connected array of slots. The focused aperture provides: 1) broadband and highly efficient…

Authors: Pascual Laguna, Cavallo, Baselmans, Llombart

Bibcode: 2022ITAP...70.5995P

DOI: 10.1109/TAP.2022.3142291

Lees meer

The next technological breakthrough in millimeter-submillimeter astronomy is three-dimensional imaging spectrometry with wide instantaneous spectral bandwidths and wide fields of view. The total optimization of the focal-plane instrument, the telescope,…

Authors: Huijten, Roelvink, Brackenhoff, Taniguchi, Bakx, Marthi, Zaalberg, Doing, Baselmans, Chin, Huiting, Karatsu, Laguna, Tamura, Takekoshi, Yates, van Hoven, Endo

Bibcode: 2022JATIS...8b8005H

DOI: 10.1117/1.JATIS.8.2.028005

Lees meer

Superconducting circuit elements used in millimeter-submillimeter (mm-submm) astronomy would greatly benefit from deposited dielectrics with small dielectric loss and noise. This will enable the use of multilayer circuit elements and…

Authors: Buijtendorp, Bueno, Thoen, Murugesan, Sberna, Baselmans, Vollebregt, Endo

Bibcode: 2022JATIS...8b8006B

DOI: 10.1117/1.JATIS.8.2.028006

Lees meer

We measure temperature-dependent quasiparticle fluctuations in a small Al volume, embedded in a NbTiN superconducting microwave resonator. The resonator design allows for readout close to equilibrium. By placing the Al…

Authors: de Rooij, Baselmans, Murugesan, Thoen, de Visser

Bibcode: 2021PhRvB.104r0506D

DOI: 10.1103/PhysRevB.104.L180506

DOI 2: 10.48550/arXiv.2103.04777

Lees meer

The idea that preformed Cooper pairs could exist in a superconductor at temperatures higher than its zero-resistance critical temperature (Tc) has been explored for unconventional, interfacial, and disordered superconductors, but…

Authors: Bastiaans, Chatzopoulos, Ge, Cho, Tromp, van Ruitenbeek, Fischer, de Visser, Thoen, Driessen, Klapwijk, Allan

Bibcode: 2021Sci...374..608B

DOI: 10.1126/science.abe3987

DOI 2: 10.48550/arXiv.2101.08535

Lees meer

A noiseless, photon-counting detector, which resolves the energy of each photon, could radically change astronomy, biophysics, and quantum optics. Superconducting detectors promise an intrinsic resolving power at visible wavelengths of…

Authors: de Visser, de Rooij, Murugesan, Thoen, Baselmans

Bibcode: 2021PhRvP..16c4051D

DOI: 10.1103/PhysRevApplied.16.034051

DOI 2: 10.48550/arXiv.2103.06723

Lees meer

We present a lab-on-chip experiment to accurately measure losses of superconducting microstrip lines at microwave and submillimeter wavelengths. The microstrips are fabricated from Nb -Ti -N , which is deposited…

Authors: Hähnle, Kouwenhoven, Buijtendorp, Endo, Karatsu, Thoen, Murugesan, Baselmans

Bibcode: 2021PhRvP..16a4019H

DOI: 10.1103/PhysRevApplied.16.014019

DOI 2: 10.48550/arXiv.2108.11095

Lees meer

This paper discusses the science case for a sensitive spectro-polarimetric survey of the microwave sky. Such a survey would provide a tomographic and dynamic census of the three-dimensional distribution of…

Authors: Delabrouille, Abitbol, Aghanim, Ali-Haïmoud, Alonso, Alvarez, Banday, Bartlett, Baselmans, Basu, Battaglia, Climent, Bernal, Béthermin, Bolliet, Bonato, Bouchet, Breysse, Burigana, Cai, Chluba, Churazov, Dannerbauer, De Bernardis, De Zotti, Di Valentino, Dimastrogiovanni,…

Bibcode: 2021ExA....51.1471D

DOI: 10.1007/s10686-021-09721-z

Lees meer

We trace the historical fate of experiment and theory of microwave-stimulated superconductivity as originally reported for constriction-type superconducting weak links. It is shown that the observed effect disappeared by improving…

Authors: Klapwijk, de Visser

Bibcode: 2020AnPhy.41768104K

DOI: 10.1016/j.aop.2020.168104

DOI 2: 10.48550/arXiv.1911.02793

Lees meer

We present a lab-on-chip technique to measure the very low losses in superconducting transmission lines at (sub-) mm wavelengths. The chips consist of a 100 nm-thick NbTiN Co-planar Waveguide (CPW)…

Authors: Hähnle, Marrewijk, Endo, Karatsu, Thoen, Murugesan, Baselmans

Bibcode: 2020ApPhL.116r2601H

DOI: 10.1063/5.0005047

DOI 2: 10.48550/arXiv.2003.10241

Lees meer

A nanoscale phononic crystal filter (reflector) is designed for a kinetic inductance detector where the reflection band is matched to the quasiparticle recombination phonons with the aim to increase quasiparticle…

Authors: Puurtinen, Rostem, de Visser, Maasilta

Bibcode: 2020JLTP..199..577P

DOI: 10.1007/s10909-020-02423-4

DOI 2: 10.48550/arXiv.1909.10316

Lees meer

We are developing an ultra-wideband spectroscopic instrument, DESHIMA (DEep Spectroscopic HIgh-redshift MApper), based on the technologies of an on-chip filter bank and microwave kinetic inductance detector (MKID) to investigate dusty…

Authors: Takekoshi, Karatsu, Suzuki, Tamura, Oshima, Taniguchi, Asayama, Bakx, Baselmans, Bosma, Bueno, Chin, Fujii, Fujita, Huiting, Ikarashi, Ishida, Ishii, Kawabe, Klapwijk, Kohno, Kouchi, Llombart, Maekawa, Murugesan, Nakatsubo, Naruse, Ohtawara, Pascual Laguna,…

Bibcode: 2020JLTP..199..231T

DOI: 10.1007/s10909-020-02338-0

DOI 2: 10.48550/arXiv.2001.05151

Lees meer

For astronomical instruments, accurate knowledge of the optical pointing and coupling is essential to characterize the alignment and performance of (sub-)systems prior to integration and deployment. Ideally, this requires the…

Authors: Yates, Davis, Jellema, Baselmans, Baryshev

Bibcode: 2020JLTP..199..156Y

DOI: 10.1007/s10909-020-02352-2

DOI 2: 10.48550/arXiv.2002.03790

Lees meer

Ultra-wideband, three-dimensional (3D) imaging spectrometry in the millimeter-submillimeter (mm-submm) band is an essential tool for uncovering the dust-enshrouded portion of the cosmic history of star formation and galaxy evolution1-3. However,…

Authors: Endo, Karatsu, Tamura, Oshima, Taniguchi, Takekoshi, Asayama, Bakx, Bosma, Bueno, Chin, Fujii, Fujita, Huiting, Ikarashi, Ishida, Ishii, Kawabe, Klapwijk, Kohno, Kouchi, Llombart, Maekawa, Murugesan, Nakatsubo, Naruse, Ohtawara, Pascual Laguna, Suzuki,…

Bibcode: 2019NatAs...3..989E

DOI: 10.1038/s41550-019-0850-8

DOI 2: 10.48550/arXiv.1906.10216

Lees meer

Terahertz spectrometers with a wide instantaneous frequency coverage for passive remote sensing are enormously attractive for many terahertz applications, such as astronomy, atmospheric science, and security. Here we demonstrate a…

Authors: Endo, Karatsu, Laguna, Mirzaei, Huiting, Thoen, Murugesan, Yates, Bueno, Marrewijk, Bosma, Yurduseven, Llombart, Suzuki, Naruse, de Visser, van der Werf, Klapwijk, Baselmans

Bibcode: 2019JATIS...5c5004E

DOI: 10.1117/1.JATIS.5.3.035004

DOI 2: 10.48550/arXiv.1901.06934

Lees meer

Complex field mapping is a powerful tool to characterize the optical performance of astronomical instruments, and has become the standard for characterizing heterodyne array cameras. Recently, an adaptation of the…

Authors: Davis, Yates, Jellema, Groppi, Baselmans, Kohno, Baryshev

Bibcode: 2019ITTST...9...67D

DOI: 10.1109/TTHZ.2018.2883820

Lees meer

For space observatories, the glitches caused by high energy phonons created by the interaction of cosmic ray particles with a detector substrate lead to dead time during observation. Mitigating the…

Authors: Karatsu, Endo, Bueno, de Visser, Barends, Thoen, Murugesan, Tomita, Baselmans

Bibcode: 2019ApPhL.114c2601K

DOI: 10.1063/1.5052419

DOI 2: 10.48550/arXiv.1901.02387

Lees meer

The development of lens-antenna-coupled aluminum-based microwave kinetic inductance detectors (MKIDs) and on-chip spectrometers needs a dedicated cryogenic setup to measure the beam patterns of the lens-antenna system over a large…

Authors: Hähnle, Bueno, Huiting, Yates, Baselmans

Bibcode: 2018JLTP..193..833H

DOI: 10.1007/s10909-018-1940-1

Lees meer

There is an increasing demand for large format detector arrays with large bandwidths and high antenna efficiencies for future THz astronomical radiometric applications. For direct detection instruments, it is also…

Authors: Yurduseven, Bueno, Yates, Neto, Baselmans, Llombart

Bibcode: 2018ITTST...8..736Y

DOI: 10.1109/TTHZ.2018.2873890

Lees meer

We present the development of a background-limited kilo-pixel imaging array of ultrawide bandwidth kinetic inductance detectors (KIDs) suitable for space-based THz astronomy applications. The array consists of 989 KIDs, in…

Authors: Bueno, Murugesan, Karatsu, Thoen, Baselmans

Bibcode: 2018JLTP..193...96B

DOI: 10.1007/s10909-018-1962-8

Lees meer

When quasiparticles in a BCS superconductor recombine into Cooper pairs, phonons are emitted within a narrow band of energies above the pairing energy at 2 Δ . We show that…

Authors: Rostem, de Visser, Wollack

Bibcode: 2018PhRvB..98a4522R

DOI: 10.1103/PhysRevB.98.014522

DOI 2: 10.48550/arXiv.1805.06991

Lees meer

We describe a space-borne, multi-band, multi-beam polarimeter aiming at a precise and accurate measurement of the polarization of the Cosmic Microwave Background. The instrument is optimized to be compatible with…

Authors: de Bernardis, Ade, Baselmans, Battistelli, Benoit, Bersanelli, Bideaud, Calvo, Casas, Castellano, Catalano, Charles, Colantoni, Columbro, Coppolecchia, Crook, D'Alessandro, De Petris, Delabrouille, Doyle, Franceschet, Gomez, Goupy, Hanany, Hills, Lamagna, Macias-Perez, Maffei,…

Bibcode: 2018JCAP...04..015D

DOI: 10.1088/1475-7516/2018/04/015

DOI 2: 10.48550/arXiv.1705.02170

Lees meer

Future observations of cosmic microwave background (CMB) polarisation have the potential to answer some of the most fundamental questions of modern physics and cosmology, including: what physical process gave birth…

Authors: Delabrouille, de Bernardis, Bouchet, Achúcarro, Ade, Allison, Arroja, Artal, Ashdown, Baccigalupi, Ballardini, Banday, Banerji, Barbosa, Bartlett, Bartolo, Basak, Baselmans, Basu, Battistelli, Battye, Baumann, Benoít, Bersanelli, Bideaud, Biesiada, Bilicki, Bonaldi, Bonato,…

Bibcode: 2018JCAP...04..014D

DOI: 10.1088/1475-7516/2018/04/014

DOI 2: 10.48550/arXiv.1706.04516

Lees meer

Large ultrasensitive detector arrays are needed for present and future observatories for far infrared, submillimeter wave (THz), and millimeter wave astronomy. With increasing array size, it is increasingly important to…

Authors: Yates, Baryshev, Yurduseven, Bueno, Davis, Ferrari, Jellema, Llombart, Murugesan, Thoen, Baselmans

Bibcode: 2017ITTST...7..789Y

DOI: 10.1109/TTHZ.2017.2755500

DOI 2: 10.48550/arXiv.1707.02142

Lees meer

We present the design, fabrication, and full characterisation (sensitivity, beam pattern, and frequency response) of a background limited broadband antenna coupled kinetic inductance detector covering the frequency range from 1.4…

Authors: Bueno, Yurduseven, Yates, Llombart, Murugesan, Thoen, Baryshev, Neto, Baselmans

Bibcode: 2017ApPhL.110w3503B

DOI: 10.1063/1.4985060

Lees meer

Uniformity in thickness and electronic properties of superconducting niobium titanium nitride (NbTiN) thin films is a critical issue for upscaling superconducting electronics, such as microwave kinetic inductance detectors for submillimeter…

Authors: Thoen, Bos, Haalebos, Klapwijk, Baselmans, Endo

Bibcode: 2017ITAS...2731948T

DOI: 10.1109/TASC.2016.2631948

Lees meer

Aims: Future astrophysics and cosmic microwave background space missions operating in the far-infrared to millimetre part of the spectrum will require very large arrays of ultra-sensitive detectors in combination with…

Authors: Baselmans, Bueno, Yates, Yurduseven, Llombart, Karatsu, Baryshev, Ferrari, Endo, Thoen, de Visser, Janssen, Murugesan, Driessen, Coiffard, Martin-Pintado, Hargrave, Griffin

Bibcode: 2017A&A...601A..89B

DOI: 10.1051/0004-6361/201629653

DOI 2: 10.48550/arXiv.1609.01952

Lees meer

Ultra-low-noise transition edge sensors (TES) with noise equivalent power lower than 2 × 10^{-19} W/Hz^{1/2 } have been fabricated by SRON, which meet the sensitivity requirements for the far-infrared SAFARI…

Authors: Ridder, Khosropanah, Hijmering, Suzuki, Bruijn, Hoevers, Gao, Zuiddam

Bibcode: 2016JLTP..184...60R

DOI: 10.1007/s10909-015-1381-z

Lees meer

We show the first experimental results which prove that superconducting NbTiN coplanar-waveguide resonators can achieve a loaded Q factor in excess of 800 in the 350 GHz band. These resonators…

Authors: Endo, Yates, Bueno, Thoen, Murugesan, Baryshev, Klapwijk, van der Werf, Baselmans

Bibcode: 2016JLTP..184..412E

DOI: 10.1007/s10909-016-1579-8

Lees meer

Microwave kinetic inductance detector (MKID) provides a way to build large ground-based sub-mm instruments such as NIKA and A-MKID. For such instruments, therefore, it is important to understand and characterize…

Authors: Bisigello, Yates, Murugesan, Baselmans, Baryshev

Bibcode: 2016JLTP..184..161B

DOI: 10.1007/s10909-016-1524-x

DOI 2: 10.48550/arXiv.1602.00442

Lees meer

We describe theoretically the depairing effect of a microwave field on diffusive s -wave superconductors. The ground state of the superconductor is altered qualitatively in analogy to the depairing due…

Authors: Semenov, Devyatov, de Visser, Klapwijk

Bibcode: 2016PhRvL.117d7002S

DOI: 10.1103/PhysRevLett.117.047002

DOI 2: 10.48550/arXiv.1603.02726

Lees meer

We present a fabrication method for sub-micron lens-coupled lumped element kinetic inductance detectors (LEKIDs) for broadband sub-millimeter (sub-mm) and THz radiation detection. The LEKIDs are fabricated from very thin (12…

Authors: Gomez, Prieto, Bueno, Doyle, Barry, Bideaud, Llombart, Granados, Costa-Kramer, Martin-Pintado, Baselmans

Bibcode: 2016JLTP..184..148G

DOI: 10.1007/s10909-016-1517-9

Lees meer

We have measured the absorption of terahertz radiation in a BCS superconductor over a broad range of frequencies from 200 GHz to 1.1 THz, using a broadband antenna-lens system and…

Authors: de Visser, Yates, Guruswamy, Goldie, Withington, Neto, Llombart, Baryshev, Klapwijk, Baselmans

Bibcode: 2015ApPhL.106y2602D

DOI: 10.1063/1.4923097

DOI 2: 10.48550/arXiv.1505.06191

Lees meer

We present an experimental study of kinetic inductance detectors (KIDs) fabricated of atomic layer deposited TiN films and characterized at radiation frequencies of 350 GHz. The responsivity to radiation is…

Authors: Bueno, Coumou, Zheng, de Visser, Klapwijk, Driessen, Doyle, Baselmans

Bibcode: 2014ApPhL.105s2601B

DOI: 10.1063/1.4901536

DOI 2: 10.48550/arXiv.1408.0270

Lees meer

We have measured and compared the response of hybrid NbTiN-Al Microwave Kinetic Inductance Detectors (MKIDs) to changes in bath temperature and illumination by sub-mm radiation. We show that these two…

Authors: Janssen, Endo, de Visser, Klapwijk, Baselmans

Bibcode: 2014ApPhL.105s3504J

DOI: 10.1063/1.4901733

DOI 2: 10.48550/arXiv.1408.3272

Lees meer

We present modeling of distributed /4 microwave kinetic inductance detectors (MKIDs) showing how electromagnetic cross coupling between the MKID resonators can occur at frequencies corresponding to the microwave readout signal…

Authors: Yates, Baselmans, Baryshev, Doyle, Endo, Ferrari, Hochgürtel, Klein

Bibcode: 2014JLTP..176..761Y

DOI: 10.1007/s10909-013-1034-z

Lees meer

Cryogenic test setups with controlled stray light environments capable of reaching ultra-low radiative background levels are required to test far infrared (FIR) and submillimeter (sub-mm) wave radiation detectors for future…

Authors: Bueno, de Visser, Doyle, Baselmans

Bibcode: 2014JLTP..176.1089B

DOI: 10.1007/s10909-014-1184-7

Lees meer

Recently we have reported on the effects of magnetic field on our low noise (NEP = 4 W/Hz) [1] TiAu TES bolometers that are being developed at SRON for the…

Authors: Hijmering, Khosropanah, Ridder, Gao, Hoevers, Jackson, Goldie, Withington, Kozorezov

Bibcode: 2014JLTP..176..316H

DOI: 10.1007/s10909-013-1061-9

Lees meer

SRON is developing TES detectors based on a superconducting Ti/Au bilayer on a suspended SiN membrane for the short-wavelength band of the SAFARI instrument on SPICA mission. We have recently…

Authors: Khosropanah, Suzuki, Hijmering, Ridder, Lindeman, Gao, Hoevers

Bibcode: 2014JLTP..176..363K

DOI: 10.1007/s10909-014-1131-7

Lees meer

At SRON we are developing Frequency Domain Multiplexing for the read-out of superconducting transition edge sensor microcalorimeters for future X-ray astrophysical missions. We will report on the performance of Goddard…

Authors: Akamatsu, Gottardi, Adams, Bandler, Bruijn, Chervenak, Eckart, Finkbeiner, den Hartog, Hoevers, Kelley, Kilbourne, van der Kuur, van den Linden, Porter, Sadleir, Smith, Kiviranta

Bibcode: 2014JLTP..176..591A

DOI: 10.1007/s10909-014-1130-8

Lees meer

Operation of TES-based bolometers in a resistance locked loop (RLL), i.e. keeping the operating resistance constant by means of feedback on the bias voltage, provides a number of attractive properties…

Authors: van der Kuur, Gottardi, Akamatsu, Bruijn, den Hartog, Hoevers, Gao, Hijmering, Khosropanah, Ridder

Bibcode: 2014JLTP..176..304V

DOI: 10.1007/s10909-014-1157-x

Lees meer

It has been recently demonstrated that superconducting transition edge-sensors behave as weak-links due to longitudinally induced superconductivity from the leads with higher . In this work we study the implication…

Authors: Gottardi, Akamatsu, Bruijn, Gao, den Hartog, Hijmering, Hoevers, Khosropanah, Kozorezov, van der Kuur, van der Linden, Ridder

Bibcode: 2014JLTP..176..279G

DOI: 10.1007/s10909-014-1093-9

DOI 2: 10.48550/arXiv.1604.00680

Lees meer

In a superconductor, in which electrons are paired, the density of unpaired electrons should become zero when approaching zero temperature. Therefore, radiation detectors based on breaking of pairs promise supreme…

Authors: de Visser, Baselmans, Bueno, Llombart, Klapwijk

Bibcode: 2014NatCo...5.3130D

DOI: 10.1038/ncomms4130

DOI 2: 10.48550/arXiv.1306.4238

Lees meer

In a superconductor, absorption of photons with an energy below the superconducting gap leads to redistribution of quasiparticles over energy and thus induces a strong nonequilibrium quasiparticle energy distribution. We…

Authors: de Visser, Goldie, Diener, Withington, Baselmans, Klapwijk

Bibcode: 2014PhRvL.112d7004D

DOI: 10.1103/PhysRevLett.112.047004

DOI 2: 10.48550/arXiv.1306.4992

Lees meer

We demonstrate photon noise limited performance in both phase and amplitude readout in microwave kinetic inductance detectors (MKIDs) consisting of NbTiN and Al, down to 100 fW of optical power.…

Authors: Janssen, Baselmans, Endo, Ferrari, Yates, Baryshev, Klapwijk

Bibcode: 2013ApPhL.103t3503J

DOI: 10.1063/1.4829657

DOI 2: 10.48550/arXiv.1311.2429

Lees meer

We experimentally demonstrate the principle of an on-chip submillimeter wave filter bank spectrometer, using superconducting microresonators as narrow band-separation filters. The filters are made of NbTiN/SiNx/NbTiN microstrip line resonators, which…

Authors: Endo, Sfiligoj, Yates, Baselmans, Thoen, Javadzadeh, van der Werf, Baryshev, Klapwijk

Bibcode: 2013ApPhL.103c2601E

DOI: 10.1063/1.4813816

Lees meer

The low frequency complex impedance of a high resistivity 92 μ Ω cm and 100 nm thick TiN superconducting film has been measured via the transmission of several high sensitivity…

Authors: Diener, Schellevis, Baselmans

Bibcode: 2012ApPhL.101y2601D

DOI: 10.1063/1.4771995

DOI 2: 10.48550/arXiv.1211.6678

Lees meer

We probe the effects of strong disorder (2.4<kFl<8.6) on superconductivity in thin films of niobium titanium nitride and titanium nitride by measuring the microwave electrodynamics in coplanar waveguide resonators. We…

Authors: Driessen, Coumou, Tromp, de Visser, Klapwijk

Bibcode: 2012PhRvL.109j7003D

DOI: 10.1103/PhysRevLett.109.107003

DOI 2: 10.48550/arXiv.1205.2463

Lees meer

A large number of low temperature detectors may be read out via few wires using frequency division multiplexing. In this scheme, each detector is biased by a sine wave with…

Authors: Lindeman, Hijmering, Khosropanah, de Korte, den Hartog, Gottardi, van der Kuur, Hoevers

Bibcode: 2012JLTP..167..701L

DOI: 10.1007/s10909-012-0540-8

Lees meer

SAFARI is an imaging Fourier Transform Spectrometer for 35-200 μm under development for flight on the Japanese IR-satellite SPICA (2018). The 3.25 m diameter actively cooled telescope (<6K) will provide…

Authors: van der Kuur, Beyer, Bruijn, Gao, den Hartog, Heijmering, Hoevers, Jackson, van Leeuwen, Lindeman, Kiviranta, de Korte, Mauskopf, de Korte, van Weers, Withington

Bibcode: 2012JLTP..167..561V

DOI: 10.1007/s10909-012-0521-y

Lees meer

SRON is developing an electronic read-out system for an array of transition edge sensors (TES) based on the techniques of frequency domain multiplexing (FDM) and base-band feedback (BBFB). The astronomical…

Authors: den Hartog, Audley, Beyer, Boersma, Bruijn, Gottardi, Hoevers, Hou, Keizer, Khosropanah, Kiviranta, de Korte, van der Kuur, van Leeuwen, Nieuwenhuizen, van Winden

Bibcode: 2012JLTP..167..652D

DOI: 10.1007/s10909-012-0577-8

Lees meer

We present new results on the development of larger arrays (presently 72 channels, goal of multiple units of 160 channels) of superconducting LC filters. The a-Si:H based resonators show a…

Authors: Bruijn, Gottardi, den Hartog, Hoevers, Kiviranta, de Korte, van der Kuur

Bibcode: 2012JLTP..167..695B

DOI: 10.1007/s10909-011-0422-5

Lees meer

We are developing an instrument based on Kinetic Inductance Detectors (KID) known as the Néel IRAM KID Array (NIKA). Leveraging the experience gained from the first generation NIKA in 2009,…

Authors: Monfardini, Benoit, Bideaud, Boudou, Calvo, Camus, Hoffmann, Désert, Leclercq, Roesch, Schuster, Ade, Doyle, Mauskopf, Pascale, Tucker, Bourrion, Macias-Perez, Vescovi, Barishev, Baselmans, Ferrari, Yates, Cruciani, De Bernardis, Masi, Giordano, Marghesin, Leduc,…

Bibcode: 2012JLTP..167..834M

DOI: 10.1007/s10909-011-0451-0

Lees meer

Authors: Baselmans, Yates, Diener, Visser

Bibcode: 2012JLTP..167..360B

DOI: 10.1007/s10909-012-0511-0

Lees meer

Authors: Lindeman, Khosropanah, Hijmering, Ridder, Gottardi, Bruijn, Kuur, Korte, Gao, Hoevers

Bibcode: 2012JLTP..167...96L

DOI: 10.1007/s10909-012-0572-0

Lees meer

Authors: Khosropanah, Hijmering, Ridder, Lindeman, Gottardi, Bruijn, Kuur, Korte, Gao, Hoevers

Bibcode: 2012JLTP..167..188K

DOI: 10.1007/s10909-012-0550-6

Lees meer

Authors: Kozorezov, Golubov, Martin, Korte, Lindeman, Hijmering, Kuur, Hoevers, Gottardi, Kupriyanov, Wigmore

Bibcode: 2012JLTP..167..108K

DOI: 10.1007/s10909-012-0489-7

Lees meer

Authors: Lankwarden, Endo, Baselmans, Bruijn

Bibcode: 2012JLTP..167..367L

DOI: 10.1007/s10909-012-0503-0

Lees meer

Authors: Kozorezov, Golubov, Martin, Korte, Lindeman, Hijmering, Kuur, Hoevers, Gottardi, Kupriyanov, Wigmore

Bibcode: 2012JLTP..167..114K

DOI: 10.1007/s10909-012-0490-1

Lees meer

Authors: Baselmans

Bibcode: 2012JLTP..167..292B

DOI: 10.1007/s10909-011-0448-8

Lees meer

Authors: de Visser, Baselmans, Diener, Yates, Endo, Klapwijk

Bibcode: 2012JLTP..167..335D

DOI: 10.1007/s10909-012-0519-5

Lees meer

The so-called excess noise limits the energy resolution of transition-edge sensor (TES) detectors, and its physical origin has been unclear, with many competing models proposed. Here we present the noise…

Authors: Palosaari, Kinnunen, Ridder, Kuur, Hoevers, Maasilta

Bibcode: 2012JLTP..167..129P

DOI: 10.1007/s10909-012-0471-4

DOI 2: 10.48550/arXiv.1112.0400

Lees meer

At SRON we are studying the performance of a Goddard Space Flight Center single pixel TES microcalorimeter operated in an AC bias configuration. For x-ray photons at 6 keV the…

Authors: Gottardi, Adams, Bailey, Bandler, Bruijn, Chervenak, Eckart, Finkbeiner, Hartog, Hoevers, Kelley, Kilbourne, Korte, Kuur, Lindeman, Porter, Sadlier, Smith

Bibcode: 2012JLTP..167..214G

DOI: 10.1007/s10909-012-0494-x

DOI 2: 10.48550/arXiv.1604.02595

Lees meer

To use highly resistive material for Kinetic Inductance Detectors (KID), new designs have to be done, in part due to the impedance match needed between the KID chip and the…

Authors: Diener, Leduc, Yates, Lankwarden, Baselmans

Bibcode: 2012JLTP..167..305D

DOI: 10.1007/s10909-012-0484-z

DOI 2: 10.48550/arXiv.1309.4317

Lees meer

SRON is developing the Frequency Domain Multiplexing (FDM) readout and the ultra low NEP TES bolometers array for the infrared spectrometer SAFARI on board of the Japanese space mission SPICA.…

Authors: Gottardi, Bruijn, Gao, Hartog, Hijmering, Hoevers, Khosropanah, Korte, Kuur, Lindeman, Ridder

Bibcode: 2012JLTP..167..161G

DOI: 10.1007/s10909-012-0559-x

DOI 2: 10.48550/arXiv.1604.02593

Lees meer

The sensitivity of microwave kinetic inductance detectors (MKIDs) based on coplanar waveguides (CPWs) needs to be improved by at least an order of magnitude to satisfy the requirements for space-based…

Authors: Janssen, Endo, Baselmans, Visser, Barends, Klapwijk

Bibcode: 2012JLTP..167..354J

DOI: 10.1007/s10909-012-0458-1

DOI 2: 10.48550/arXiv.1206.0579

Lees meer

We have measured the number of quasiparticles and their lifetime in aluminium superconducting microwave resonators. The number of excess quasiparticles below 160 mK decreases from 72 to 17 μm-3 with…

Authors: de Visser, Baselmans, Yates, Diener, Endo, Klapwijk

Bibcode: 2012ApPhL.100p2601D

DOI: 10.1063/1.4704151

DOI 2: 10.48550/arXiv.1202.0816

Lees meer

This paper describes the combined Dutch efforts toward the development of large wideband focal plane array receivers based on kinetic inductance detectors (KIDs). Taking into account strict electromagnetic and detector…

Authors: Baryshev, Baselmans, Freni, Gerini, Hoevers, Iacono, Neto

Bibcode: 2011ITTST...1..112B

DOI: 10.1109/TTHZ.2011.2159532

Lees meer

We find that quasiparticle generation from stray infrared light creates a significant loss mechanism in superconducting resonators and qubits. We show that resonator quality factors and qubit energy relaxation times…

Authors: Barends, Wenner, Lenander, Chen, Bialczak, Kelly, Lucero, O'Malley, Mariantoni, Sank, Wang, White, Yin, Zhao, Cleland, Martinis, Baselmans

Bibcode: 2011ApPhL..99k3507B

DOI: 10.1063/1.3638063

Lees meer

We have developed a model for the resistive transition in a transition edge sensor (TES) based on the model of a resistively and capacitively shunted junction, taking into account phase-slips…

Authors: Kozorezov, Golubov, Martin, de Korte, Lindeman, Hijmering, van der Kuur, Hoevers, Gottardi, Kupriyanov, Wigmore

Bibcode: 2011ApPhL..99f3503K

DOI: 10.1063/1.3621829

Lees meer

Microwave kinetic inductance detectors (MKIDs) have shown great potential for sub-mm instrumentation because of the high scalability of the technology. Here, we demonstrate for the first time in the sub-mm…

Authors: Yates, Baselmans, Endo, Janssen, Ferrari, Diener, Baryshev

Bibcode: 2011ApPhL..99g3505Y

DOI: 10.1063/1.3624846

DOI 2: 10.48550/arXiv.1107.4330

Lees meer

SRON is developing an electronic read-out system for an array of Transition-Edge Sensors (TES) which combines the techniques of Frequency Domain Multiplexing (FDM) with Base-Band FeedBack (BBFB). Its potential astronomical…

Authors: den Hartog, Beyer, Boersma, Bruijn, Gottardi, Hoevers, Hou, Kiviranta, de Korte, van der Kuur, van Leeuwen, Lindeman, Nieuwenhuizen

Bibcode: 2011ITAS...21..289D

DOI: 10.1109/TASC.2010.2101998

Lees meer

The Néel IRAM KIDs Array (NIKA) is a fully integrated measurement system based on kinetic inductance detectors (KIDs) currently being developed for millimeter wave astronomy. The instrument includes dual-band optics…

Authors: Monfardini, Benoit, Bideaud, Swenson, Cruciani, Camus, Hoffmann, Désert, Doyle, Ade, Mauskopf, Tucker, Roesch, Leclercq, Schuster, Endo, Baryshev, Baselmans, Ferrari, Yates, Bourrion, Macias-Perez, Vescovi, Calvo, Giordano

Bibcode: 2011ApJS..194...24M

DOI: 10.1088/0067-0049/194/2/24

DOI 2: 10.48550/arXiv.1102.0870

Lees meer

We have directly measured quasiparticle number fluctuations in a thin film superconducting Al resonator in thermal equilibrium. The spectrum of these fluctuations provides a measure of both the density and…

Authors: de Visser, Baselmans, Diener, Yates, Endo, Klapwijk

Bibcode: 2011PhRvL.106p7004D

DOI: 10.1103/PhysRevLett.106.167004

DOI 2: 10.48550/arXiv.1103.0758

Lees meer

Context. Current generation millimeter wavelength detectors suffer from scaling limits imposed by complex cryogenic readout electronics. These instruments typically employ multiplexing ratios well below a hundred. To achieve multiplexing ratios…

Authors: Monfardini, Swenson, Bideaud, Désert, Yates, Benoit, Baryshev, Baselmans, Doyle, Klein, Roesch, Tucker, Ade, Calvo, Camus, Giordano, Guesten, Hoffmann, Leclercq, Mauskopf, Schuster

Bibcode: 2010A&A...521A..29M

DOI: 10.1051/0004-6361/201014727

DOI 2: 10.48550/arXiv.1004.2209

Lees meer

We present multitone harmonic-balance (MTHB) simulations of a Ti-Au x-ray transition-edge sensor (TES) microcalorimeter in a 5×5 pixel spectrometer array. The dynamic response of the TES microcalorimeter under simulation has…

Authors: Rostem, Goldie, Withington, Hoevers, Gottardi, van der Kuur

Bibcode: 2010JAP...108b4509R

DOI: 10.1063/1.3466795

Lees meer

We report quality factors of up to 500×103 in superconducting resonators at the single photon levels needed for circuit quantum electrodynamics. This result is achieved by using NbTiN and removing…

Authors: Barends, Vercruyssen, Endo, de Visser, Zijlstra, Klapwijk, Diener, Yates, Baselmans

Bibcode: 2010ApPhL..97b3508B

DOI: 10.1063/1.3458705

DOI 2: 10.48550/arXiv.1005.0408

Lees meer

We report a reduction in the frequency noise in coplanar waveguide superconducting resonators. The reduction of 7 dB is achieved by removing the exposed dielectric substrate surface from the region…

Authors: Barends, Vercruyssen, Endo, de Visser, Zijlstra, Klapwijk, Baselmans

Bibcode: 2010ApPhL..97c3507B

DOI: 10.1063/1.3467052

DOI 2: 10.48550/arXiv.1005.5394

Lees meer

We present the latest results of the performance of micro-calorimeters based on transition edge sensors (TESs) for space applications. Sensors based on TiAu superconductive layers with Cu/Bi absorbers are discussed…

Authors: Dirks, Popescu, Bruijn, Gottardi, Hoevers, de Korte, van der Kuur, Ridder, Takei

Bibcode: 2009NIMPA.610...83D

DOI: 10.1016/j.nima.2009.05.114

Lees meer

Microwave kinetic inductance detectors have great potential for large, very sensitive detector arrays for use in, for example, submillimeter imaging. Being intrinsically readout in the frequency domain, they are particularly…

Authors: Yates, Baryshev, Baselmans, Klein, Güsten

Bibcode: 2009ApPhL..95d2504Y

DOI: 10.1063/1.3159818

Lees meer

We present measurements of the frequency noise and resonance frequency temperature dependence in planar superconducting resonators on both silicon and sapphire substrates. We show, by covering the resonators with sputtered…

Authors: Barends, Hortensius, Zijlstra, Baselmans, Yates, Gao, Klapwijk

Bibcode: 2009ITAS...19..936B

DOI: 10.1109/TASC.2009.2018086

Lees meer

The quasiparticle recombination time in superconducting films, consisting of the standard electron-phonon interaction and a yet to be identified low-temperature process, is studied for different densities of magnetic and nonmagnetic…

Authors: Barends, van Vliet, Baselmans, Yates, Gao, Klapwijk

Bibcode: 2009PhRvB..79b0509B

DOI: 10.1103/PhysRevB.79.020509

DOI 2: 10.48550/arXiv.0811.1961

Lees meer

We study NbTiN resonators by measurements of the temperature dependent resonance frequency and frequency noise. Additionally, resonators are studied covered with SiOx dielectric layers of various thicknesses. The resonance frequency…

Authors: Barends, Hortensius, Zijlstra, Baselmans, Yates, Gao, Klapwijk

Bibcode: 2008ApPhL..92v3502B

DOI: 10.1063/1.2937837

DOI 2: 10.48550/arXiv.0804.3499

Lees meer

The quasiparticle relaxation time in superconducting films has been measured as a function of temperature using the response of the complex conductivity to photon flux. For tantalum and aluminum, chosen…

Authors: Barends, Baselmans, Yates, Gao, Hovenier, Klapwijk

Bibcode: 2008PhRvL.100y7002B

DOI: 10.1103/PhysRevLett.100.257002

DOI 2: 10.48550/arXiv.0802.0640

Lees meer

We measured the superconducting phase transition of a transition-edge sensor (TES) provided by SRON. Using newly developed techniques, we obtain thousands of impedance measurements to find sensitivity α I ,…

Authors: Lindeman, Barger, Brandl, Crowder, Rocks, McCammon, Hoevers

Bibcode: 2008JLTP..151..190L

DOI: 10.1007/s10909-007-9618-0

Lees meer

We present measurements of the quasiparticle lifetime using optical pulses in the temperature range of 50 mK 1 K as well as measurements of the noise spectrum under continuous illumination…

Authors: Barends, Baselmans, Yates, Gao, Hovenier, Klapwijk

Bibcode: 2008JLTP..151..518B

DOI: 10.1007/s10909-007-9683-4

Lees meer

Kinetic inductance detectors are based upon high Q superconducting resonators. We have measured the electrical Noise Equivalent Power (NEP) of 100 nm thick 1/4 λ coplanar waveguide Aluminum resonators at…

Authors: Baselmans, Yates, Barends, Lankwarden, Gao, Hoevers, Klapwijk

Bibcode: 2008JLTP..151..524B

DOI: 10.1007/s10909-007-9684-3

Lees meer

We are developing X-ray microcalorimeters based on Ti/Au transition-edge sensors (TES). Among sensors we have fabricated, one with a Cu absorber at the center of the TES shows a particularly…

Authors: Takei, Gottardi, Hoevers, de Korte, van der Kuur, Ridder, Bruijn

Bibcode: 2008JLTP..151..161T

DOI: 10.1007/s10909-007-9621-5

Lees meer

In this paper we describe microfabrication developments for a 1024 pixel calorimeter array, to be used in future X-ray spectroscopic space missions. We report on an optimization study of high…

Authors: Bruijn, Ridder, Gottardi, Hoevers, de Korte, van der Kuur

Bibcode: 2008JLTP..151..500B

DOI: 10.1007/s10909-007-9681-6

Lees meer

We characterised a TES-based X-ray microcalorimeter in an adiabatic demagnetisation refrigerator (ADR) using synchrotron radiation. The detector response and energy resolution was measured at the beam-line in the PTB radiometry…

Authors: Gottardi, Takei, van der Kuur, de Korte, Hoevers, Boersma, Bruijn, Mels, Ridder, Takken, van Weers

Bibcode: 2008JLTP..151..106G

DOI: 10.1007/s10909-007-9629-x

DOI 2: 10.48550/arXiv.1604.02535

Lees meer

Seven microcalorimeters with different geometries have been tested and their performance is compared. The study, for TiAu TESs with a Cu absorber, indicates the presence of so-called constant voltage noise…

Authors: Hoevers, Bruijn, Dirks, Gottardi, de Korte, van der Kuur, Popescu, Ridder, Takei, Takken

Bibcode: 2008JLTP..151...94H

DOI: 10.1007/s10909-007-9633-1

Lees meer

The intermediate frequency (IF) characteristics, the frequency dependent IF impedance, and the mixer conversion gain of a small area hot electron bolometer (HEB) have been measured and modeled. The device…

Authors: Kooi, Baselmans, Hajenius, Gao, Klapwijk, Dieleman, Baryshev, de Lange

Bibcode: 2007JAP...101d4511K

DOI: 10.1063/1.2400086

Lees meer

We report that the heterodyne sensitivity of superconducting hot-electron bolometers (HEBs) increases by 25–30% after annealing at 85°C in high vacuum. The devices studied are twin-slot antenna coupled mixers with…

Authors: Hajenius, Yang, Gao, Baselmans, Klapwijk, Voronov, Gol'tsman

Bibcode: 2007ITAS...17..399H

DOI: 10.1109/TASC.2007.898064

Lees meer

One of the greatest challenges in the development of future space based instruments for sub-mm astronomy is the fabrication of very sensitive and large detector arrays. Within this context we…

Authors: Baselmans, Yates, de Korte, Hoevers, Barends, Hovenier, Gao, Klapwijk

Bibcode: 2007AdSpR..40..708B

DOI: 10.1016/j.asr.2007.06.041

Lees meer

We have measured the quality factors and phase noise of niobium and tantalum coplanar waveguide microwave resonators on silicon. The results of both materials are similar. We reach quality factors…

Authors: Barends, Baselmans, Hovenier, Gao, Yates, Klapwijk, Hoevers

Bibcode: 2007ITAS...17..263B

DOI: 10.1109/TASC.2007.898541

Lees meer

We present a detailed experimental study of the direct detection effect in a small volume (0.15μm×1μm×3.5nm) quasioptical NbN phonon cooled hot electron bolometer mixer at 673GHz. We find that the…

Authors: Baselmans, Baryshev, Reker, Hajenius, Gao, Klapwijk, Voronov, Gol'tsman

Bibcode: 2006JAP...100h4510B

DOI: 10.1063/1.2234802

Lees meer

We present a complete experimental characterization of a quasioptical twin-slot antenna coupled small area (1.0×0.15 μm2) NbN hot electron bolometer (HEB) mixer compatible with currently available solid state tunable local…

Authors: Hajenius, Baselmans, Baryshev, Gao, Klapwijk, Kooi, Jellema, Yang

Bibcode: 2006JAP...100g4507H

DOI: 10.1063/1.2354421

Lees meer

In this paper we discuss the stability of heterodyne terahertz receivers based on small volume NbN phonon cooled hot electron bolometers (HEBs). The stability of these receivers can be broken…

Authors: Kooi, Baselmans, Baryshev, Schieder, Hajenius, Gao, Klapwijk, Voronov, Gol'tsman

Bibcode: 2006JAP...100f4904K

DOI: 10.1063/1.2336498

Lees meer

Thermal transport in transition edge sensor (TES)-based microcalorimeter arrays is reviewed. The fundamentals of thermal conductance in Si 3N 4 membranes are discussed and the magnitude of the electron-phonon coupling…

Authors: Hoevers

Bibcode: 2006NIMPA.559..702H

DOI: 10.1016/j.nima.2005.12.109

Lees meer

We are developing a single-pixel antenna-coupled bolometric detector for use in low-background millimetre-wave astronomy. The device consists of a radial probe in a rectangular waveguide coupled to a Ti/Au transition…

Authors: Orlando, Bruijn, Hoevers, Mauskopf, de Korte, Krouwer, Ridder

Bibcode: 2006NIMPA.559..534O

DOI: 10.1016/j.nima.2005.12.062

Lees meer

Transition-edge sensors (TESs) exhibit two major types of excess noise above the expected and unavoidable thermodynamic fluctuation noise (TFN) to the heat sink and Johnson noise. High-resistance TESs such as…

Authors: Crowder, Lindeman, Anderson, Bandler, Bilgri, Bruijn, Chervenak, Figueroa-Feliciano, Finkbeiner, Germeau, Hoevers, Iyomoto, Kelly, Kilbourne, Lai, Man, McCammon, Nelms, Porter, Rocks, Saab, Sadleir, Vidugiris

Bibcode: 2006NIMPA.559..721C

DOI: 10.1016/j.nima.2005.12.117

Lees meer

We report on advances in the fabrication technology of an array of microcalorimeters, to be used in future X-ray spectroscopic space missions. An optimization study was done to form high…

Authors: Bruijn, Ridder, Krouwer, Hoevers, de Korte, van der Kuur

Bibcode: 2006NIMPA.559..444B

DOI: 10.1016/j.nima.2005.12.032

Lees meer

We report on several properties of Ti/Au thermometer layers that limit the experimentally obtained energy resolution of microcalorimeters, based on this thermometer. We have observed excess noise, instabilities in the…

Authors: Bruijn, Germeau, Hoevers, de Korte, van der Kuur, Ridder

Bibcode: 2006NIMPA.559..709B

DOI: 10.1016/j.nima.2005.12.111

Lees meer

Future X-ray telescopes like XEUS will require a microcalorimeter array capable of handling a high photon-count-rate (250 cps per pixel, τeff=100 μs). This requirement, combined with an energy resolution of…

Authors: van der Kuur, de Korte, Hoevers, Bruijn, Ridder, Kiviranta, Seppä

Bibcode: 2006NIMPA.559..820V

DOI: 10.1016/j.nima.2005.12.209

Lees meer

We find that the sensitivity of heterodyne receivers based on superconducting hot-electron bolometers (HEBs) increases by 25-30% after annealing at 85 °C in vacuum. The devices studied are twin-slot antenna…

Authors: Yang, Hajenius, Baselmans, Gao, Voronov, Gol'tsman

Bibcode: 2006SuScT..19L...9Y

DOI: 10.1088/0953-2048/19/4/L01

Lees meer

One of the greatest challenges in the development of very sensitive radiation detectors is the fabrication of a large detector array. Within this context we have started the development of…

Authors: Baselmans, Barends, Hovenier, Gao, Hoevers, Klapwijk

Bibcode: 2006NIMPA.559..567B

DOI: 10.1016/j.nima.2005.12.056

Lees meer

We studied the phonon transport in free-standing 1μm thick silicon-nitride membranes at temperatures around 100 mK. By varying the geometry of the membranes and the dimensions of the heater element,…

Authors: Hoevers, Ridder, Germeau, Bruijn, de Korte, Wiegerink

Bibcode: 2005ApPhL..86y1903H

DOI: 10.1063/1.1949269

Lees meer

We report the first demonstration of an all solid-state heterodyne receiver that can be used for high-resolution spectroscopy above 2THz suitable for space-based observatories. The receiver uses a NbN superconducting…

Authors: Gao, Hovenier, Yang, Baselmans, Baryshev, Hajenius, Klapwijk, Adam, Klaassen, Williams, Kumar, Hu, Reno

Bibcode: 2005ApPhL..86x4104G

DOI: 10.1063/1.1949724

Lees meer

We measure the direct detection effect in a small volume (0.15μm×1μm×3.5nm) quasioptical NbN phonon cooled hot electron bolometer mixer at 1.6THz. We find that the small signal sensitivity of the…

Authors: Baselmans, Baryshev, Reker, Hajenius, Gao, Klapwijk, Vachtomin, Maslennikov, Antipov, Voronov, Gol'tsman

Bibcode: 2005ApPhL..86p3503B

DOI: 10.1063/1.1887812

Lees meer

Hot-electron bolometer devices, used successfully in low noise heterodyne mixing at frequencies up to 2.5 THz, have been analyzed. A distributed temperature numerical model of the NbN bridge, based on…

Authors: Hajenius, Barends, Gao, Klapwijk, Baselmans, Baryshev, Voronov, Gol'tsman

Bibcode: 2005ITAS...15..495H

DOI: 10.1109/TASC.2005.849887

Lees meer

We demonstrate that the performance of NbN lattice cooled hot electron bolometer mixers depends strongly on the interface quality between the bolometer and the contact structure. We show experimentally that…

Authors: Baselmans, Hajenius, Gao, Klapwijk, de Korte, Voronov, Gol'tsman

Bibcode: 2004ApPhL..84.1958B

DOI: 10.1063/1.1667012

Lees meer

We report on the development activities towards a cryogenic array of micro-calorimeters, based on voltage-biased Ti/Au transition edge thermometers. Fabrication issues are discussed along the lines of two fabrication routes.…

Authors: Bruijn, Baars, Bergmann Tiest, Germeau, Hoevers, de Korte, Mels, Ridder, Krouwer, van Baar, Wiegerink

Bibcode: 2004NIMPA.520..443B

DOI: 10.1016/j.nima.2003.11.359

Lees meer

We have performed numerical calculations of the noise in voltage-biased superconducting transition edge-based X-ray microcalorimeters, using a finite-element model. Details of the model are discussed, as well as results for…

Authors: Bergmann Tiest, Bruijn, Hoevers, de Korte, van der Kuur, Mels

Bibcode: 2004NIMPA.520..329B

DOI: 10.1016/j.nima.2003.11.259

Lees meer