Results 31 to 40 of about 6,501 (284)

A Tip–Tilt and Piston Detection Approach for Segmented Telescopes

Photonics, 2020
Accurate segmented mirror wavefront sensing and control is essential for next-generation large aperture telescope system design. In this paper, a direct tip–tilt and piston error detection technique based on model-based phase retrieval with multiple ...
Shun Qin, Wai Kin Chan
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Shack–Hartmann Wavefront Sensing Based on Four-Quadrant Binary Phase Modulation

Photonics, 2022
Aiming at the problem that it is difficult for the conventional Shack–Hartmann wavefront sensor to achieve high-precision wavefront reconstruction with low spatial sampling, a kind of Shack–Hartmann wavefront sensing technology based on four-quadrant ...
Mengmeng Zhao, Wang Zhao, Kangjian Yang, Shuai Wang, Ping Yang, Fengjiao Zeng, Lingxi Kong, Chao Yang   +7 more
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Focal plane wavefront sensing on SUBARU/SCExAO [PDF]

, 2020
Focal plane wavefront sensing is an elegant solution for wavefront sensing since near-focal images of any source taken by a detector show distortions in the presence of aberrations.
Norris, B., Keller, Christoph U., Sahoo, Ananya, Lozi, Julien, Mugnier, Laurent, M, Christoph U. Keller, Mamadou N'Diaye, Miller, Kelsey L., Lozi, J., Nour Skaf, Aurélie Bonnefois, Ananya Sahoo, Vincent Deo, Nemanja Jovanovic, Bos, S. P., Currie, T., Masen P. Lamb, Thayne Currie, Vievard, S., N'Diaye, M., Lopez, Coline, Snik, Frans, Bos, Steven,, Lamb, Masen, Vievard, Sébastien, Mary, D, Lopez, C., Mugnier, Laurent M., Wilby, M. J., Frans Snik, N'Diaye, Mamadou, Steven P. Bos, Montmerle-Bonnefois, A, Guyon, O., Sahoo, A., Keller, Christoph,, Martinache, F., Montmerle-Bonnefois, A., Skaf, N., Alison Wong, Mugnier, L. M., Bonnefois, Aurélie, Deo, V., Coline Lopez, Cassaing, F., Jean-Francois Sauvage, Lamb, M., Wong, Alison, Martinache, Frantz, Keller, Christoph, U, Frédéric Cassaing, Laurent M. Mugnier, Barnaby Norris, Norris, Barnaby, Julien Lozi, Bos, Steven P., Sauvage, J-F, Keller, C. U., Miller, K., Sauvage, J.-F., Currie, Thayne, Wilby, Michael,, Jovanovic, Nemanja, Montmerle-Bonnefois, Aurélie, Miller, Kelsey, Frantz Martinache, Mary, D., Lamb, Masen P., Olivier Guyon, Sauvage, Jean-Francois, Wilby, Michael, J, Mugnier, Laurent,, Snik, F., Deo, Vincent, Jovanovic, N., Cassaing, Frédéric, Sébastien Vievard, Michael J. Wilby, Bos, Steven, P, Kelsey L. Miller, Skaf, Nour, Wong, A., Guyon, Olivier, Wilby, Michael J.   +83 more
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Digging Deeper through Biological Specimens Using Adaptive Optics-Based Optical Microscopy

Photonics, 2023
Optical microscopy is a vital tool for visualizing the cellular and sub-cellular structures of biological specimens. However, due to its limited penetration depth, its biological applicability has been hindered.
Gagan Raju, Nirmal Mazumder
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Wavefront measurement method based on improved light field camera

Results in Physics, 2020
The light field camera is used in the wavefront sensing field because of its simple structure, large field of view, high utilization rate of light energy, etc.
Xin Chen, Wenke Xie, Haotong Ma, Junqiu Chu, Bo Qi, Ge Ren, Xuecheng Sun, Fanglin Chen   +7 more
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Beam wavefront retrieval by convoluted spatial spectral benchmark

Matter and Radiation at Extremes, 2021
We propose a method for retrieving a beam wavefront from its near-field intensity distribution after a 4f system by simply inserting a benchmark at the Fourier plane.
Xuewei Deng, Xiaoxia Huang, Deen Wang, Ying Yang, Xin Zhang, Dongxia Hu   +5 more
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Calibration and performance evaluation of a monomorph deformable mirror

Results in Optics, 2022
To achieve diffraction-limited performance with a 50 cm solar telescope at the Udaipur solar observatory the development of a high-order adaptive optics (AO) system is currently in progress. The system includes a monomorph deformable mirror (MDM) with 85
A. Raja Bayanna, Bireddy Ramya, Shibu K. Mathew, Rohan E. Louis   +3 more
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ARGOS wavefront sensing: from detection to correction [PDF]

, 2014
Argos is the ground-layer adaptive optics system for the Large Binocular Telescope. In order to perform its wide-field correction, Argos uses three laser guide stars which sample the atmospheric turbulence.
Connot, C., Borelli, J., Storm, J., Kulas, M., J. Storm, Bonaglia, M., S. Esposito, S. Rabien, L. Busoni, Gilles Orban de Xivry, Busoni, L., Puglisi, A., Mazzoni, T., J. Borelli, A. Puglisi, C. Connot, Esposito, S., J. Ziegleder, T. Mazzoni, Orban De Xivry, Gilles, Ziegleder, J., Gaessler, W., Orban de Xivry, G., M. Bonaglia, W. Gaessler, M. Kulas, Rabien, S.   +26 more
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Computational Wavefront Sensing: Theory, Practice, and Applications

, 2021
Wavefront sensing is a fundamental problem in applied optics. Wavefront sensors that work in a deterministic manner are of particular interest. Initialized with a unified theory for classical wavefront sensors, this dissertation discusses relevant ...
Wang, Congli
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Adaptive Optics Methods to Rat Eye Properties: Impact of Pupil Diameter on Wavefront Detection

Photonics
Achieving a high-quality wavefront sensing light spot and accurate wavefront estimation of the rat eye is still challenging due to its large ocular aberrations and the back reflections from fundus multilayer.
Wen Kong, Jiangjie Huang, Yi He, Guohua Shi   +3 more
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