Results 21 to 30 of about 2,071,972 (337)

Disturbance Modelling for Minimum Variance Control in Adaptive Optics Systems Using Wavefront Sensor Sampled-Data. [PDF]

Sensors (Basel), 2021
Coronel M, Carvajal R, Escárate P, Agüero JC.   +3 more
europepmc   +3 more sources

New achievements in orbital angular momentum beam characterization using a Hartmann wavefront sensor and the Kirkpatrick-Baez active optical system KAOS. [PDF]

J Synchrotron Radiat
Novinec L, Pancaldi M, Capotondi F, De Ninno G, Guzzi F, Kourousias G, Pedersoli E, Ressel B, Rösner B, Simoncig A, Zangrando M, Manfredda M.   +11 more
europepmc   +3 more sources

Non-modulated pyramid wavefront sensor. Use in sensing and correcting atmospheric turbulence [PDF]

Astronomy & Astrophysics, 2023
Context. The diffusion of adaptive optics systems in astronomical instrumentation for large ground-based telescopes is rapidly increasing and the pyramid wavefront sensor is replacing the Shack-Hartmann as the standard solution for single conjugate ...
G. Agapito, E. Pinna, S. Esposito, C. Heritier, S. Oberti   +4 more
semanticscholar   +1 more source

Fuchs' Endothelial Corneal Dystrophy evaluation using a high-resolution wavefront sensor. [PDF]

Sci Rep
Belda-Para C, Velarde-Rodríguez G, Marichal-Hernández JG, Velasco-Ocaña M, Trujillo-Sevilla JM, Alejandre-Alba N, Rodríguez-Ramos JM.   +6 more
europepmc   +3 more sources

Focal-plane-assisted pyramid wavefront sensor: Enabling frame-by-frame optical gain tracking [PDF]

Astronomy & Astrophysics, 2021
Aims. With its high sensitivity, the pyramid wavefront sensor (PyWFS) is becoming an advantageous sensor for astronomical adaptive optics (AO) systems.
V. Chambouleyron, O. Fauvarque, J. Sauvage, B. Neichel, T. Fusco   +4 more
semanticscholar   +1 more source

On-sky validation of image-based adaptive optics wavefront sensor referencing [PDF]

Astronomy & Astrophysics, 2021
Differentiating between an exoplanet signal and residual speckle noise is a key challenge in high-contrast imaging. Speckles are due to a combination of fast, slow and static wavefront aberrations introduced by atmospheric turbulence and instrument ...
N. Skaf, O. Guyon, E. Gendron, K. Ahn, A. Bertrou-Cantou, A. Boccaletti, Jesse Cranney, T. Currie, V. Deo, B. Edwards, F. Ferreira, D. Gratadour, J. Lozi, B. Norris, A. Sevin, F. Vidal, S. Vievard   +16 more
semanticscholar   +1 more source

Variation on a Zernike wavefront sensor theme: Optimal use of photons [PDF]

Astronomy & Astrophysics, 2021
Aims. The Zernike wavefront sensor (ZWFS) is a concept belonging to the wide class of Fourier-filtering wavefront sensors (FFWFSs). The ZWFS is known for its extremely high sensitivity and low dynamic range, which makes it a unique sensor for second ...
V. Chambouleyron, O. Fauvarque, J. Sauvage, K. Dohlen, N. Levraud, A. Vigan, M. N’diaye, B. Neichel, T. Fusco   +8 more
semanticscholar   +1 more source

Improvements on speed, stability and field of view in adaptive optics OCT for anterior retinal imaging using a pyramid wavefront sensor. [PDF]

Biomed Opt Express
Brunner E, Kunze L, Laidlaw V, Jodlbauer D, Drexler W, Ramlau R, Pollreisz A, Pircher M.   +7 more
europepmc   +2 more sources

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
doaj   +1 more source

The bright pyramid wavefront sensor [PDF]

Techniques and Instrumentation for Detection of Exoplanets X, 2021
submitted proceedings to SPIE SPIE Optical Engineering + Applications 2021, Techniques and Instrumentation for Detection of Exoplanets ...
Gerard, Benjamin, Chambouleyron, Vincent, Jensen-Clem, Rebecca, Sauvage, Jean-François   +3 more
openaire   +2 more sources