Results 11 to 20 of about 16,450 (264)
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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Literature Review on Adaptive Optics [PDF]
INCAS BulletinAdaptive optics (AO) is defined as a technology developed to compensate for wavefront distortions caused by atmospheric turbulence or microscopic heterogeneities, thereby enhancing image quality in observational astronomy and biological microscopy.
Muaayed F. AL-RAWI, Mhnd FARHAN
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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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System theoretic tools in adaptive optics [PDF]
2009 IEEE International Conference on Control and Automation, 2009 Adaptive Optics (AO) systems provide a real challenge to the control engineer in many respects, the foremost of which are scalability and computational complexity of the control algorithms. On the other hand, systems theoretic tools can be applied to look at several problems under new perspectives.
BEGHI, ALESSANDRO +2 more
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A Global Decoupling Control Algorithm for LC-DM Adaptive Optics System
IEEE Access, 2021 The liquid crystal (LC) and deformable mirror (DM) cascaded adaptive optics (AO) system can be used to effectively extend the imaging waveband of a large aperture telescope from the infrared to the visible waveband. However, to maintain the effectiveness
Yukun Wang +4 more
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Reconstruction of wavefront distorted by atmospheric turbulence using a Shack-Hartman sensor [PDF]
Компьютерная оптика, 2019 The reconstruction of a wave front containing random phase distortions of the light field is considered. The reconstruction is performed by a Hartmann method based on the approximation of the wave function by Zernike polynomials using estimates of local ...
Vitaly Lavrinov, Lidiya Lavrinova
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