Results 31 to 40 of about 2,243,893 (300)

Wide-field AO correction: the large wavefront sensor detector of ARGOS [PDF]

, 2010
Wide field correction allowing large field to benefit from adaptive optics (AO) is challenging in more than one aspect. We address here the wavefront sensor (WFS) detector side where, in addition to high sensitivity and low noise, the simultaneous ...
Hart, M., Gaessler, Wolfgang, Deysenroth, Matthias, Deysenroth, M., Sebastian Rabien, Simone Esposito, Wolfgang Gaessler, Gemperlein, Hans, Strüder, L., Barl, Lothar, Lothar Barl, Rabien, Sebastian, Michael Hart, Ziegleder, Julian, Hans Gemperlein, Orban de Xivry, Gilles, Hart, Michael, Matthias Deysenroth, Lothar Strüder, Gilles Orban de Xivry, Strüder, Lothar, Esposito, S., Ziegleder, J., Barl, L., Gaessler, W., Orban de Xivry, G., Gemperlein, H., Julian Ziegleder, Esposito, Simone, Rabien, S.   +29 more
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Wavefront sensor for millimeter/submillimeter-wave adaptive optics based on aperture-plane interferometry [PDF]

Astronomical Telescopes + Instrumentation, 2020
We present a concept of a millimeter wavefront sensor that allows real-time sensing of the surface of a groundbased millimeter/submillimeter telescope. It is becoming important for ground-based millimeter/submillimeter astronomy to make telescopes larger
Y. Tamura, R. Kawabe, Y. Fukasaku, K. Kimura, T. Ueda, A. Taniguchi, N. Okada, H. Ogawa, Ikumi Hashimoto, T. Minamidani, N. Kawaguchi, N. Kuno, Yohei Togami, M. Hagimoto, Satoya Nakano, K. Matsuda, S. Okumura, Tomoko Nakamura, M. Kurita, T. Takekoshi, T. Oshima, T. Onishi, K. Kohno   +22 more
semanticscholar   +1 more source

Laboratory characterization of the ARGOS laser wavefront sensor [PDF]

, 2012
In this paper we present the integration status of the ARGOS wavefront sensor and the results of the closed loop tests performed in laboratory. ARGOS is the laser guide star adaptive optics system of the Large Binocular Telescope.
Gilles Orban de Xivry, Busoni, L., Lorenzo Busoni, Sebastian Rabien, Quiròs Pacheco, F., Pacheco, F., Simone Esposito, Esposito, S., Orban De Xivry, Gilles, Carbonaro, L., Luca Carbonaro, Bonaglia, M., Xompero, M., Marco Bonaglia, Fernando Quiròs Pacheco, Marco Xompero, Orban de Xivry, G., Rabien, S.   +17 more
core   +1 more source

All-fibre wavefront sensor

, 2022
We report on a tapered three-core optical fibre that can be used as a tip-tilt wavefront sensor. In this device, a coupled region of a few millimetres at the sensing tip of the fibre converts fragile phase information from an incoming wavefront into ...
Yerolatsitis, S, Wright, T A, Harrington, Kerrianne, Birks, Tim A., Birks, T A, Harrington, K, Harris, Robert J., Harris, R J, Yerolatsitis, Stephanos, Wright, Thomas A.   +9 more
core   +1 more source

Multi-faceted digital pyramid wavefront sensor

, 2022
The modulated pyramid wavefront sensor is known for its high sensitivity and adjustable dynamic range. The need for mechanically moving parts in a modulated pyramid wavefront sensor can be overcome by using the recently proposed digital pyramid wavefront
Vohnsen, Brian, Akondi, Vyas, Castillo, Sara   +2 more
core   +1 more source

Wavefront image sensor chip

Optics Express, 2010
We report the implementation of an image sensor chip, termed wavefront image sensor chip (WIS), that can measure both intensity/amplitude and phase front variations of a light wave separately and quantitatively. By monitoring the tightly confined transmitted light spots through a circular aperture grid in a high Fresnel number regime, we can measure ...
Cui, Xiquan, Ren, Jian, Tearney, Guillermo, Yang, Changhuei   +3 more
openaire   +4 more sources

Pupil calibration for pyramid wavefront sensors based on a wavefront corrector

Optics Express, 2023
The pyramid wavefront sensor (PWS) presents numerous advantages, such as high energy utilization, exceptional spatial resolution, and adjustability. Precise calibration of the pupil's position and size in advance is essential for accurately extracting wavefront slope information from the captured pupil image by the PWS.
Zhaojun Yan, Huizhen Yang, Lin Chen, Xiangdong Zang, Peng Chen, Zhiguang Zhang   +5 more
openaire   +2 more sources

Dataset for "All-fibre wavefront sensor"

, 2022
We have developed a tip-tilt wavefront sensor based on a tapered three-core optical fibre. In this device, a coupled region at the sensing tip of the fibre converts phase information from an incoming wavefront into intensity information within each of ...
Harris, Robert, Harrington, Kerrianne, Centre for Photonics and Photonic Materials, Heidelberg-Königstuhl State Observatory, Max Planck Institute for Astronomy, Birks, Tim, Wright, Thomas, The University of Arizona, Yerolatsitis, Stephanos, Department of Physics   +9 more
core   +2 more sources

Adaptive optics with an infrared pyramid wavefront sensor at Keck

Journal of Astronomical Telescopes Instruments and Systems, 2020
. The study of cold or obscured, red astrophysical sources can significantly benefit from adaptive optics (AO) systems employing infrared (IR) wavefront sensors.
C. Bond, S. Cetre, S. Lilley, P. Wizinowich, D. Mawet, M. Chun, E. Wetherell, S. Jacobson, C. Lockhart, Eric A. Warmbier, S. Ragland, C. Alvarez, O. Guyon, S. Goebel, J. Delorme, N. Jovanovic, D. Hall, J. Wallace, M. Taheri, C. Plantet, V. Chambouleyron   +20 more
semanticscholar   +1 more source

Analysis of design for Hartmann-Shack measurements under usage of Fourier-iteration and Zernike approximation wavefront reconstruction methods

, 2022
Paper 97171P, 6 S.The measurement of a wavefront is a powerful tool for characterizing optical systems. The most commonly used wavefront measurement technique is the method of local-light aberrometry.
Hartmann, Peter, Baselt, Tobias, Kabardiadi, Alexander, Greiner, Andreas, Aßmann, Heiko   +4 more
core   +1 more source