Results 11 to 20 of about 117,696 (296)
Amplitude Zone Plate in Adaptive Optics: Proposal of the Principle
Photonics, 2022 One of the main elements in hardware-based adaptive optics systems is a deformable mirror. There is quite a large number of such mirrors based on different principles and exhibiting varying performance.
Vasily Matkivsky +3 more
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Comparison of closed loop and sensorless adaptive optics in widefield optical microscopy [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 We report on a closed loop widefield adaptive optics, optical microscopy system in which the feedback signal is provided by backscattered light from the sample acting as a guide star.
Bourgenot C. +3 more
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Mathematics, 2021 Information on the correlations from solar Shack–Hartmann wavefront sensors is usually used for reconstruction algorithms. However, modern applications of artificial neural networks as adaptive optics reconstruction algorithms allow the use of the full ...
Francisco García Riesgo +4 more
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Optique adaptative et telescopes geants
Comptes Rendus. Mécanique, 2023 Adaptive optics (AO), now installed on all the astronomical ground-based telescopes, make it possible to overcome the angular resolution limitations imposed by atmospheric turbulence.
Fusco, Thierry
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Testing and characterization of challenging optics and optical systems with Shack Hartmann wavefront sensors [PDF]
EPJ Web of Conferences, 2019 The Shack-Hartman wavefront sensor is a common metrology tool in the field of laser, adaptive optics and astronomy. However, this technique is still scarcely used in optics and optical system metrology.
Siv Julie +5 more
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Results in Optics, 2021 The Laser Guide Star Facility (LGSF), as the most important part of the adaptive optics system of the large ground-based telescope, is aimed to generate multiple laser guide stars at the sodium layer.
Yan Mo +3 more
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A Novel SPGD Algorithm for Wavefront Sensorless Adaptive Optics System
IEEE Photonics Journal, 2023 Stochastic parallel gradient descent (SPGD) is the most frequently used optimization algorithm for correcting wavefront distortion in the wavefront sensorless adaptive optics(WFS-Less AO)system.
Jiaxun Li +6 more
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Sky coverage modeling for the whole sky for laser guide star multiconjugate adaptive optics [PDF]
, 2012 The scientific productivity of laser guide star adaptive optics systems strongly depends on the sky coverage, which describes the probability of finding natural guide stars for the tip/tilt wavefront sensor(s) to achieve a certain performance.
Andersen, David +2 more
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Atmospheric tomography with separate minimum variance laser and natural guide star mode control [PDF]
, 2009 This paper introduces a novel, computationally efficient, and practical atmospheric tomography wavefront control architecture with separate minimum variance laser and natural guide star mode estimation.
Ellerbroek, B. L., Gilles, L.
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ALFA: First Operational Experience of the MPE/MPIA Laser Guide Star System for Adaptive Optics [PDF]
, 1998 The sodium laser guide star adaptive optics system ALFA has been constructed at the Calar Alto 3.5-m telescope. Following the first detection of the laser beacon on the wavefront sensor in 1997 the system is now being optimized for best performance.
Davies, R. I. +7 more
core +3 more sources