Searched for: mods_originInfo_publisher_s%3A%22SPIE%22
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Quesson, B.A.J. (author), van Neer, P.L.M.J. (author), Tamer, M.S. (author), Hatakeyama, K. (author), van Es, M.H. (author), van Riel, M.C.J.M. (author), Piras, D. (author)
The semiconductor industry needs to fit ever more devices per unit area to improve their performance; hence a trend towards increasingly complex structures by varying material combinations and 3D geometries with increasing aspect ratios. The new materials used may be optically opaque, posing problems for traditional optical metrology methods....
conference paper 2022
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Jonker, W.A. (author), Kuiper, S. (author), Kamphues, F.G. (author), Vogel, P.A. (author), Tuan Vu, A. (author), Meiners, C. (author), Horst, R. (author), Navarro, R. (author), Arnold, T. (author)
Conventionally, facesheets for deformable mirrors (DM) are manufactured through grinding, polishing and finishing of a piece of optical glass. Due to the amount of material that needs to be removed, the required surface form errors and the complex handling of the fragile product throughout all manufacturing steps, this is a lengthy, risky and...
conference paper 2022
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Jonker, W.A. (author), Kuiper, S. (author), Kamphues, F.G. (author), Bos, A. (author), Dekker, A. (author), Chun, M. (author), Benschop, A. (author), Priem, H. (author), Monna, B. (author), Nair, M. (author), Gupta, T. (author), Ackaert, G. (author), Bola, S. (author), Varvaringos, I. (author), Schroth, J. (author)
A consortium of industrial and academic partners, coordinated by TNO, is working on the realization of a 620mm adaptive secondary mirror (ASM) for the University of Hawaii’s 2.2-meter telescope. The ASM consists of a 620mm-diameter slumped convex aspherical mirror shell, manipulated by 210 variable-reluctance actuators mounted on a light...
conference paper 2022
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Nijenhuis, J.R. (author), Jonker, W.A. (author), Kamphues, F.G. (author)
TNO, in close cooperation with Demcon, has designed the Laser Projection Subsystem (LPS) for ESO’s Extremely Large Telescope (ELT). The ELT LPS will consist of up to 8 laser projection subunits. The design is based on the Four Laser Guide Star Facility (4LGSF), built for the ESO Very Large Telescope (VLT) (5). The VLT AO system has been...
conference paper 2022
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Derkink, F.M. (author), Doelman, D. (author), van Dam, D. (author), Brenny, B.J.M. (author), Speet, B.G. (author), van Brug, H. (author), Keller, C. (author), Snik, F. (author)
While the concentrations of trace gases in Earth’s atmosphere were roughly constant for thousands of years, human activities such as the burning of fossil fuels have caused significant changes ever since the industrial revolution. The remote sensing of trace gases has proved to be a useful technique for mapping and monitoring on the global scale...
conference paper 2022
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Verberk, R. (author), Michalak, D.J. (author), Versluis, R. (author), Polinder, H. (author), Samkharadze, N. (author), Amitonov, S.V. (author), Sammak, S. (author), Tryputen, L. (author), Brousse, D. (author), Hanfoug, R. (author)
As part of the National Agenda for Quantum Technology, QuTech (TU Delft and TNO) has agreed to make quantum technology accessible to society and industry via its full-stack prototype: Quantum Inspire. This system includes two different types of programmable quantum chips: circuits made from superconducting materials (transmons), and circuits...
conference paper 2022
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Nijenhuis, J.R. (author), van der Heiden, N. (author), Jonker, W.A. (author)
TMT will be a telescope with 492 segments making up the primary mirror. Each of these segments is supported with a highly sophisticated Segment Support Assembly (SSA) and each of them is to be tested for acceptance using a tool called SMATT. This tool will be mounted on top of each SSA and provides the load distribution applied to its 27 support...
conference paper 2022
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Deumel, S. (author), van Breemen, A.J.J.M. (author), Peeters, B. (author), Maas, J. (author), Akkerman, H.B. (author), Meulenkamp, E.A. (author), Gelinck, G.H. (author), Huerdler, J.E. (author), Schmidt, O. (author), Heiss, W. (author), Tedde, S.F. (author)
Future medical X-ray imaging will benefit from advances in computing power and artificial intelligence as well as improvements in the X-ray detector performance itself. Hybrid inorganic-organic perovskite materials promise direct conversion detectors with higher image quality, owing to their strong X-ray absorption, high electron and hole...
conference paper 2022
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Donnot, A. (author), Edmunds, J. (author), Hammond, N. (author), Welch, M. (author), Kean, P. (author), Kehayas, E. (author), Hagen, R.A.J. (author), Yadav, S. (author), Medenblik, H.J.W. (author), Cheng, L.K. (author), Bulgarini, G. (author), Dresscher, M. (author)
The High Photon Efficiency (HPE) standard is a promising approach for, low Size, Weight and Power (SWaP) optical terminal for space communications. In this paper, we report the creation of a breadboard demonstrator CCSDS compliant HPE source, capable of a Pulse Position Modulation (PPM) order of 256 with an average power of 4W and kW level peak...
conference paper 2022
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Bowens-Rubin, R. (author), Bos, A. (author), Hinz, P. (author), Holden, B. (author), Radovan, M. (author)
As we enter the era of TESS and JWST, instrumentation that can carry out radial velocity measurements of exoplanet systems is in high demand. We will address this demand by upgrading the UC Lick Observatory’s 2.4-meter Automated Planet Finder (APF) telescope with an adaptive optics (AO) system. The AO upgrade will be directly integrated into the...
conference paper 2022
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Kuiper, S. (author), Bos, A. (author), de Vreugd, J. (author), Witvoet, G. (author), Dekker, A. (author), Kamphues, F.G. (author), Slegtenhorst, G.F. (author), Jonker, W.A. (author), Maniscalco, M.P. (author), Femenía-Castella, B. (author), Núñez Cagigal, M. (author), Bienes Pérez, J. (author), Cózar-Castellano, J. (author), González-Cava, J.M. (author), Mato, A. (author), Soler Trujillo, A.M. (author), Vega Reyes, N. (author)
This paper describes the preliminary design of the Adaptive Secondary Mirror (ASM) for the European Solar Telescope (EST), as designed by TNO. This ASM will contain 1950 actuators over an optical aperture of Ø80cm. The mirror-shell of this ASM is concave with a radius of 2.156m and has a thickness of 2.5mm. To cope with the high optical heat...
conference paper 2022
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Chun, M.R. (author), Ryan, A. (author), Zhang, R. (author), Kuiper, S. (author), Ackaert, G. (author), Baranec, C. (author), Baeten, M.J.J. (author), Bos, A. (author), Bowens-Rubin, R. (author), Dekker, A. (author), Dungee, R. (author), Gupta, T. (author), Hinz, P. (author), Jonker, W.A. (author), Kamphues, F.G. (author), Lai, O. (author), Lu, J. (author), Maniscalco, M.P. (author), Monna, B. (author), Nair, M. (author), Nijenhuis, J.R. (author), Priem, H. (author), Vogel, P.A. (author)
We report on progress at the University of Hawaii on the integration and testing setups for the adaptive secondary mirror (ASM) for the University of Hawaii 2.2-meter telescope on Maunakea, Hawaii. We report on the development of the handling fixtures and alignment tools we will use along with progress on the optical metrology tools we will use...
conference paper 2022
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Pohl, R. (author), Blok, C. (author), Simmelink, K. (author), Biesheuvel, R. (author), Resink, S. (author), Nijenhuis, J.R. (author), van Riel, M.C.J.M. (author), Kamphues, F.G. (author), Calia, D.B. (author), Hackenberg, W. (author)
We report on the development of a Beam Conditioning and Diagnostics System (BCDS) that will be employed in the Laser Projection System (LPS) of the Extremely Large Telescope (ELT) of ESO. This conference article provides an overview about the detailed design of the BCDS and it summarizes the work of the development phase of this project. To this...
conference paper 2022
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Frommholz, D. (author), Kuijper, F. (author), Bulatov, D. (author), Cheung, D. (author)
This paper discusses a rapid workflow for the automated generation of geospecific terrain databases for military simulation environments. Starting from photogrammetric data products of an oblique aerial camera, the process comprises deterministic terrain extraction from digital surface models and semantic building reconstruction from 3D point...
conference paper 2022
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Dirks, B.P.F. (author), Ferrario, I. (author), Le Pera, A. (author), Vito Finocchiaro, D. (author), Desmons, M. (author), de Lange, T.J. (author), de Man, H. (author), Meskers, A.J.H. (author), Morits, J.P.J. (author), Neumann, N.M.P. (author), Saathof, R. (author), Witvoet, G. (author)
Due to the distance limitation of quantum communication via ground-based fibre networks, space-based quantum key distribution (QKD) is a viable solution to extend such networks over continental and, ultimately, over global distances. Compared to Low Earth Orbits (LEO), QKD from a Geostationary Orbit (GEO) offers substantial advantages, such as...
conference paper 2021
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De Biasio, M. (author), Zikulnig, J. (author), Muehleisen, W. (author), Kraft, M. (author), Simor, M. (author), Bolt, P.J. (author)
Copper Indium Gallium Selenide (CIGS) thin-film solar cells are a promising technology, but inline quality inspection systems are required for efficient high-volume production. Tests with two candidate methods: Raman spectroscopy and photo-luminescence imaging, are reported in this paper. The methods were used to estimate material compositions...
conference paper 2021
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Saathof, R. (author), Meskers, A.J.H. (author), van Kempen, F.C.M. (author), Witvoet, G. (author), Korevaar, C.W. (author), de Lange, T.J. (author), Crowcombe, E.E. (author), Fritz, E.C. (author), van de Pol, M. (author)
Optical satellite communications is a maturing technology to enable word-wide access to high throughput internet. In the past years a lot of effort has been taken to increase the applicability and the TRL of this technology. In collaboration with industry, TNO initiated several developments for space and ground technologies. Many of these...
conference paper 2021
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Aiello, S. (author)
The KM3NeT infrastructure consists of two deep-sea neutrino telescopes being deployed in the Mediterranean Sea. The telescopes will detect extraterrestrial and atmospheric neutrinos by means of the incident photons induced by the passage of relativistic charged particles through the seawater as a consequence of a neutrino interaction. The...
article 2021
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Bouma, H. (author), Reuter, A. (author), Brouwer, P. (author), George, M. (author), Ferryman, J. (author), Boyle, J. (author), Juršėnas, A. (author), Karinsalo, A. (author), Pruim, R.H.R. (author), van Rooijen, A.L. (author), ten Hove, R.J.M. (author), van Mil, J.D. (author), Gicic, D. (author), Goller, G. (author), Ledinauskas, E. (author), Ruseckas, J. (author), Kromhout, B. (author), de Moel, H. (author), Dolstra, N. (author)
Authentication of travel documents (e.g., passports) and breeder documents (e.g., birth certificates) is important to facilitate legal movement of passengers and to prevent cross-border crime, such as terrorism, smuggling, illegal migration and human trafficking. However, it is time consuming and difficult to verify all security features, the...
conference paper 2021
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de Dominicis, L. (author), Bouma, H. (author), Toivonen, S. (author), Stifini, C. (author), Villani, M.L. (author), de Nicola, A. (author), van Rooijen, A.L. (author), Baan, J. (author), Peltola, J. (author), Lämsä, A. (author), Räsänen, P. (author)
conference paper 2021
Searched for: mods_originInfo_publisher_s%3A%22SPIE%22
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