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de Graauw, T. (author), Helmich, F.P. (author), Phillips, T.G. (author), Stutzki, J. (author), Caux, E. (author), Whyborn, N.D. (author), Dieleman, P. (author), Roelfsema, P.R. (author), Aarts, H. (author), Assendorp, R. (author), Bachiller, R. (author), Baechtold, W. (author), Barcia, A. (author), Beintema, D.A. (author), Belitsky, V. (author), Benz, A.O. (author), Bieber, R. (author), Boogert, A. (author), Borys, C. (author), Bumble, B. (author), Caïs, P. (author), Caris, M. (author), Cerulli-Irelli, P. (author), Chattopadhyay, G. (author), Cherednichenko, S. (author), Ciechanowicz, M. (author), Coeur-Joly, O. (author), Comito, C. (author), Cros, A. (author), de Jonge, A. (author), de Lange, G. (author), Delforges, B. (author), Delorme, Y. (author), den Boggende, T. (author), Desbat, J.M. (author), Diez-González, C. (author), Di Giorgio, A.M. (author), Dubbeldam, L. (author), Edwards, K. (author), Eggens, M. (author), Erickson, N. (author), Evers, J. (author), Fich, M. (author), Finn, T. (author), Franke, B. (author), Gaier, T. (author), Gal, C. (author), Gao, J.R. (author), Gallego, J.D. (author), Gauffre, S. (author), Gill, J.J. (author), Glenz, S. (author), Golstein, H. (author), Goulooze, H. (author), Gunsing, T. (author), Güsten, R. (author), Hartogh, P. (author), Hatch, W.A. (author), Higgins, R. (author), Honingh, E.C. (author), Huisman, R. (author), Jackson, B.D. (author), Jacobs, H. (author), Jacobs, K. (author), Jarchow, C. (author), Javadi, H. (author), Jellema, W. (author), Justen, M. (author), Karpov, A. (author), Kasemann, C. (author), Kawamura, J. (author), Keizer, G. (author), Kester, D. (author), Klapwijk, T.M. (author), Klein, T. (author), Kollberg, E. (author), Kooi, J. (author), Kooiman, P.P. (author), Kopf, B. (author), Krause, M. (author), Krieg, J.M. (author), Kramer, C. (author), Kruizenga, B. (author), Kuhn, T. (author), Laauwen, W. (author), Lai, R. (author), Larsson, B. (author), Leduc, H.G. (author), Leinz, C. (author), Lin, R.H. (author), Liseau, R. (author), Liu, G.S. (author), Loose, A. (author), López-Fernandez, I. (author), Lord, S. (author), Luinge, W. (author), Marston, A. (author), Martín-Pintado, J. (author), Maestrini, A. (author), Maiwald, F.W. (author), McCoey, C. (author), Mehdi, I. (author), Megej, A. (author), Melchior, M. (author), Meinsma, L. (author), Merkel, H. (author), Michalska, M. (author), Monstein, C. (author), Moratschke, D. (author), Morris, P. (author), Muller, H. (author), Murphy, J.A. (author), Naber, A. (author), Natale, E. (author), Nowosielski, W. (author), Nuzzolo, F. (author), Olberg, M. (author), Olbrich, M. (author), Orfei, R. (author), Orleanski, P. (author), Ossenkopf, V. (author), Peacock, T. (author), Pearson, J.C. (author), Peron, I. (author), Phillip-May, S. (author), Piazzo, L. (author), Planesas, P. (author), Rataj, M. (author), Ravera, L. (author), Risacher, C. (author), Salez, M. (author), Samoska, L.A. (author), Saraceno, P. (author), Schieder, R. (author), Schlecht, E. (author), Schlöder, F. (author), Schmülling, F. (author), Schultz, M. (author), Schuster, K. (author), Siebertz, O. (author), Smit, H. (author), Szczerba, R. (author), Shipman, R. (author), Steinmetz, E. (author), Stern, J.A. (author), Stokroos, M. (author), Teipen, R. (author), Teyssier, D. (author), Tils, T. (author), Trappe, N. (author), van Baaren, C. (author), van Leeuwen, B.J. (author), van de Stadt, H. (author), Visser, H. (author), Wildeman, K.J. (author), Wafelbakker, C.K. (author), Ward, J.S. (author), Wesselius, P. (author), Wild, W. (author), Wulff, S. (author), Wunsch, H.J. (author), Tielens, X. (author), Zaal, P. (author), Zirath, H. (author), Zmuidzinas, J. (author), Zwart, F. (author), TNO Industrie en Techniek (author)Aims. This paper describes the Heterodyne Instrument for the Far-Infrared (HIFI) that was launched onboard ESA's Herschel Space Observatory in May 2009. Methods. The instrument is a set of 7 heterodyne receivers that are electronically tuneable, covering 480-1250 GHz with SIS mixers and the 1410-1910 GHz range with hot electron bolometer (HEB)...article 2010
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Chattopadhyay, G. (author), Llombart, N. (author), Bradford, C.M. (author), Neto, A. (author), TNO Defensie en Veiligheid (author)Micromesh bolometers have been used in several instruments working in the submillimeter band (e.g. [1]). The bolometers are usually placed inside a waveguide and consist of a mesh absorber, at a certain distance from a back short. The mesh is made of SiNi whose thermal conductivity is tuned to the incident power and operating temperature. The...conference paper 2008
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Technisch Physische Dienst TNO - TH (author), Leijtens, J.A.P. (author), Hoegaerts, C.L.G. (author), Barros, J. (author), de Vries, J. (author)The microbolometer spectrometer breadboard MIBS is a prism spectrometer that uses an uncooled microbolometer detector array and has been designed for the ESA EarthCARE mission. In order to demonstrate its feasibility a breadboard has been build, and tests have been performed that show good correlation between predicted and achieved results....conference paper 2007
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Toet, A. (author), Hogervorst, M.A. (author), van der Hoeven, M. (author), TNO Defensie en Veiligheid (author)Subjects used the dichoptic combination of a monocular image intensifier (NVG) and a monocular uncooled microbolometer (LWIR) to detect and localise both visual targets and camouflaged thermal targets while moving through a dimly lit complex environment. The NVG imagery enabled the subjects to move freely through the environment with high...conference paper 2006
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TNO Industrie en Techniek (author), Leijtens, J.A.P. (author), de Goeij, B.T.G. (author), Boslooper, E.C. (author)MIBS is a spectrometer operating in the thermal infrared wavelength region, designed in frame of the phase A study for the ESA EarthCARE mission as part of the multispectral Imaging instrument MSI, which uses a 2D microbolometer array detector in stead of the more common MCT detectors. Utilization of a microbolometer and using an integrated...conference paper 2006
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Focardi, P. (author), McGrath, W.R. (author), Neto, A. (author), TNO Defensie en Veiligheid (author)Twin-slot antennas and coplanar waveguides are a popular choice for coupling signals to state-of-the-art mixers and detectors at terahertz frequencies. Although these sensors show promising performance in terms of noise temperature, they usually also show a considerable downward shift in the center frequency of their spectral response,...article 2005
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Leijtens, J.A.P. (author), Court, A.J. (author), de Boom, K. (author), Technisch Physische Dienst TNO - TH (author)Due to lower mass, size and power demands and recognized increased reliability, microbolometer detectors seem to be well suited for small sattelite applications. Due to the improving technical performance, next generation instruments can use uncooled microbolometer arrays without significantly sacrificing performance. An example of this type of...conference paper 2004
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Leijtens, J.A.P. (author), Smorenburg, C. (author), Escudero, I. (author), Boslooper, E.C. (author), Visser, H. (author), van Helden, W.A. (author), Breussin, F.N. (author), Technisch Physische Dienst TNO - TH (author)Current Thermal infra red ( 7..14μm) multispectral imager instruments use cryogenically cooled Mercury Cadmium Telluride (MCT or HgCdTe) detectors. This causes the instruments to be bulky, power hungry and expensive. For systems that have medium NETD (Noise Equivalent Temperature Difference) requirements and can operate with high speed optics (...conference paper 2004
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Focardi, P. (author), Neto, A. (author), McGrath, W.R. (author)Series-fed coplanar-waveguide embedding circuits have been recently developed for terahertz mixers using, in particular, superconducting devices as sensors. Although these mixers show promising performance, they usually also show a considerable downward shift in the resonating frequency when compared with calculations using simplified models....article 2002