- document
- Endo, Hiroki T. (author) conference paper 2024
- document
-
Jovanovic, Nemanja (author), Gatkine, Pradip (author), Anugu, Narsireddy (author), Amezcua-Correa, Rodrigo (author), Basu Thakur, Ritoban (author), Beichman, Charles (author), Bender, Chad F. (author), Endo, A. (author), Soliman, S. (author)Photonic technologies offer numerous functionalities that can be used to realize astrophotonic instruments. The most spectacular example to date is the ESO Gravity instrument at the Very Large Telescope in Chile that combines the light-gathering power of four 8 m telescopes through a complex photonic interferometer. Fully integrated...review 2023
- document
-
Kortman, V.G. (author), Sakes, A. (author), Endo, Gen (author), Breedveld, P. (author)Gripping slippery and flexible tissues during minimal invasive surgery (MIS) is often challenging using a conventional tissue gripper. A force grip has to compensate for the low friction coefficient between the gripper’s jaws and the tissue surface. This study focuses on the development of a suction gripper. This device applies a pressure...journal article 2023
- document
-
Mavropoulou, Alexandra (author), Dabironezare, Shahab Oddin (author), Baselmans, J.J.A. (author), Endo, A. (author)Terahertz Integral Field Unit with Universal Nanotechnology (TIFUUN) is a wideband spectral mapper operating at (sub)-millimeter wavelengths. The instrument is under development for ground-based astronomy and will be deployed to the ASTE telescope in Chile. In this work, the building blocks for TIFUUN’s wideband (2:1) mappers are discussed....conference paper 2023
- document
-
Huijten, Esmee (author), Roelvink, Yannick (author), Brackenhoff, Stefanie A. (author), Zaalberg, S.L. (author), Doing, Anne Kee (author), Baselmans, J.J.A. (author), Karatsu, K. (author), Pascual Laguna, A. (author), van Hoven, M.B. (author), Endo, A. (author)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, the observing strategy, and the signal-processing software must enable efficient removal...journal article 2022
- document
-
Buijtendorp, Bruno T. (author), Bueno, Juan (author), Thoen, David (author), Murugesan, Vignesh (author), Sberna, P.M. (author), Baselmans, J.J.A. (author), Vollebregt, S. (author), Endo, A. (author)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 thereby increase the efficiency of mm-submm filters and allow for a miniaturization of microwave kinetic...journal article 2022
- document
-
Baselmans, J.J.A. (author), Karatsu, K. (author), Llombart, Nuria (author), Rybak, M. (author), Bueno Lopez, J. (author), Buijtendorp, B.T. (author), Dabironezare, Shahab Oddin (author), Hähnle, S.A. (author), Pascual Laguna, A. (author), Thoen, David (author), Yates, S.J.C. (author), Endo, A. (author)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 present the development of DESHIMA 2.0, an ISS for ultra-wideband...journal article 2022
- document
-
Endo, A. (author), Pascual Laguna, Alejandro (author), Hähnle, S.A. (author), Karatsu, K. (author), Thoen, David (author), Murugesan, Vignesh (author), Baselmans, J.J.A. (author)Superconducting resonators and transmission lines are fundamental building blocks of integrated circuits for millimeter-submillimeter astronomy. Accurate simulation of radiation loss from the circuit is crucial for the design of these circuits because radiation loss increases with frequency, and can thereby deteriorate the system performance....journal article 2022
- document
-
Thoen, David (author), Murugesan, V. (author), Pascual Laguna, A. (author), Karatsu, K. (author), Endo, A. (author), Baselmans, J.J.A. (author)We present a "mix-and-match"process to create large structures with submicrometer features by combining UV contact lithography and 100 kV electron-beam lithography in a single layer of negative-tone resist: Micro-Resist-Technology ma-N1405. The resist is successfully applied for the fabrication of an on-chip terahertz spectrometer, where the...journal article 2022
- document
-
Rybak, M. (author), Bakx, T. (author), Baselmans, J.J.A. (author), Karatsu, K. (author), Kohno, K. (author), Takekoshi, T. (author), Taniguchi, A. (author), van der werf, P. (author), Endo, A. (author)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 version of the deshima 2.0 chip has been recently manufactured and tested in the lab. Based on these realistic performance measurements,...journal article 2022
- document
-
Baselmans, J.J.A. (author), Endo, A. (author), Karatsu, K. (author), Hähnle, S. (author), Pascual Laguna, A. (author), Yates, S. (author), Ferrari, L. (author), Llombart, Nuria (author), Bueno Lopez, J. (author), Facchi, F. (author), Thoen, David (author), Murugesan, V. (author), van der werf, P. (author), de Visser, P.J. (author)Advances in far infrared astronomy have been, and will be, defined by instrument capabilities. Especially relevant is the development of imaging spectrometers for the wavelength range of 0.03-3 mm, which are not available at all at this moment. We will discuss recent advances in this field: First, we discuss the development of miniature on-chip...conference paper 2022
- document
-
Buijtendorp, B.T. (author), Vollebregt, S. (author), Karatsu, K. (author), Thoen, David (author), Murugesan, V. (author), Kouwenhoven, K. (author), Hähnle, S.A. (author), Baselmans, J.J.A. (author), Endo, A. (author)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 compact and eliminate radiation loss at high frequencies. Multilayer...journal article 2022
- document
-
Pascual Laguna, A. (author), Karatsu, K. (author), Thoen, David (author), Murugesan, Vignesh (author), Buijtendorp, B.T. (author), Endo, A. (author), Baselmans, J.J.A. (author)A superconducting microstrip half-wavelength resonator is proposed as a suitable band-pass filter for broadband moderate spectral resolution spectroscopy for terahertz (THz) astronomy. The proposed filter geometry has a free spectral range of an octave of bandwidth without introducing spurious resonances, reaches a high coupling efficiency in...journal article 2021
- document
-
Delabrouille, Jacques (author), Abitbol, Maximilian H. (author), Aghanim, Nabila (author), Ali-Haïmoud, Yacine (author), Alonso, David (author), Alvarez, Marcelo (author), Baselmans, J.J.A. (author), Endo, A. (author), Karatsu, K. (author)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 hot gas, velocity flows, early metals, dust, and mass distribution in the entire Hubble volume, exploit CMB temperature and polarisation...journal article 2021
- document
-
Hähnle, S.A. (author), Kouwenhoven, K. (author), Buijtendorp, B.T. (author), Endo, A. (author), Karatsu, K. (author), Thoen, David (author), Murugesan, V. (author), Baselmans, J.J.A. (author)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 using reactive magnetron sputtering, and amorphous silicon which is deposited using plasma-enhanced chemical vapor deposition (PECVD)....journal article 2021
- document
-
Pascual Laguna, A. (author), Karatsu, K. (author), Thoen, David (author), Murugesan, V. (author), Endo, A. (author), Baselmans, J.J.A. (author)A superconducting on-chip microstrip filter bank spectrometer prototype for Far-Infrared (FIR) Astronomy is presented. The measurements showcase its capabilities towards moderate spectral resolution (f/\Delta f\sim 500) broadband FIR spectroscopy. In this sub-mm-wave filter bank, each spectral channel consists of an 'I-shaped' microstrip THz...conference paper 2020
- document
-
Endo, A. (author), Pascual Laguna, A. (author), Hähnle, S.A. (author), Karatsu, K. (author), Thoen, David (author), Murugesan, V. (author), Baselmans, J.J.A. (author)Superconducting resonators and transmission lines are fundamental building blocks of integrated circuits for millimeter-submillimeter astronomy. Accurate simulation of radiation loss from the circuit is crucial for the design of these circuits because radiation loss increases with frequency, and can thereby deteriorate the system performance....conference paper 2020
- document
-
Kohno, Kotaro (author), Kawabe, Ryohei (author), Tamura, Yoichi (author), Endo, A. (author), Baselmans, J.J.A. (author), Karatsu, K. (author), Inoue, Akio K. (author), Moriwaki, Kana (author), Hayatsu, Natsuki H. (author)We present a conceptual study of a large format imaging spectrograph for next-generation large (50-m class) single-dish telescopes, i.e., the Large Submillimeter Telescope (LST) and Atacama Large Aperture Submillimeter Telescope (AtLAST). Recent discoveries of high-redshift star-forming galaxies at z=8-9 and candidate quiescent galaxies at z~6...conference paper 2020
- document
-
Buijtendorp, B.T. (author), Bueno, J. (author), Thoen, David (author), Sberna, V. Murugesan P.M. (author), Baselmans, J.J.A. (author), Vollebregt, S. (author), Endo, A. (author)Superconducting resonators used in millimeter-submillimeter astronomy would greatly benefit from deposited dielectrics with a small dielectric loss. We deposited hydrogenated amorphous silicon films using plasma-enhanced chemical vapor deposition, at substrate temperatures of 100°C, 250°C and 350°C. The measured void volume fraction, hydrogen...conference paper 2020
- document
-
Endo, A. (author)The integrated superconducting spectrometer (ISS) enables ultra-wideband, large field-of-view integral-field-spectrometer designs for mm-submm wave astronomy. DESHIMA (Deep Spectroscopic High-redshift Mapper) is a single-pixel ISS spectrometer for the ASTE 10-m telescope, designed to observe the 220-440 GHz band in a single shot, corresponding...abstract 2020