Results 1 to 10 of about 136,518 (282)

Intensity adaptive optics. [PDF]

open access: yesLight Sci Appl
Abstract Adaptive optics (AO) is a powerful tool employed across various research fields, from aerospace to microscopy. Traditionally, AO has focused on correcting optical phase aberrations, with recent advances extending to polarisation compensation.
Zhao Z   +14 more
europepmc   +6 more sources

Solar Adaptive Optics [PDF]

open access: yesLiving Reviews in Solar Physics, 2011
Adaptive optics (AO) has become an indispensable tool at ground-based solar telescopes. AO enables the ground-based observer to overcome the adverse effects of atmospheric seeing and obtain diffraction limited observations. Over the last decade adaptive optics systems have been deployed at major ground-based solar telescopes and revitalized ground ...
Thomas R. Rimmele, Jose Marino
openaire   +5 more sources

Adaptive Optics Ophthalmoscopy [PDF]

open access: yesAnnual Review of Vision Science, 2015
This review starts with a brief history and description of adaptive optics (AO) technology, followed by a showcase of the latest capabilities of AO systems for imaging the human retina and by an extensive review of the literature on clinical uses of AO.
Roorda, Austin, Duncan, Jacque L
openaire   +6 more sources

Optical-component-only adaptive optics

open access: yesOptics Letters, 2021
This Letter introduces a technique for performing binary adaptive optics, which is carried out by optical components only, without the help of any electronic or optoelectronic device. In this technique, the interferogram produced by a point diffraction interferometer modulates a light-driven crystal. The modulated light-driven crystal may produce pupil-
Pérez Cagigal, Manuel   +4 more
openaire   +3 more sources

Accounting for Polychromatic Light in Virtual Shack-Hartmann Wavefront Sensing

open access: yesPhotonic Sensors, 2023
Virtual Shack-Hartmann wavefront sensing (vSHWS) has some significant advantages and is promising for aberration measurement in the field of biomedical optical imaging.
Xian Yue   +5 more
doaj   +1 more source

Deep Learning-Based Prediction Algorithm on Atmospheric Turbulence-Induced Wavefront for Adaptive Optics

open access: yesIEEE Photonics Journal, 2022
Correction performance of an adaptive optics (AO) system is severely limited by its system latency under high temporal frequency distortions. Wavefront prediction methods has been proven to be an effective way to compensate system delay.
Ning Wang   +8 more
doaj   +1 more source

Atmospheric tomography with separate minimum variance laser and natural guide star mode control [PDF]

open access: yes, 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.
core   +1 more source

On-sky results of the adaptive optics MACAO for the new IR-spectrograph CRIRES at VLT [PDF]

open access: yes, 2006
The adaptive optics MACAO has been implemented in 6 focii of the VLT observatory, in three different flavors. We present in this paper the results obtained during the commissioning of the last of these units, MACAO-CRIRES.
Biereichel, P.   +18 more
core   +3 more sources

Adaptive Gradient Estimation Stochastic Parallel Gradient Descent Algorithm for Laser Beam Cleanup

open access: yesPhotonics, 2021
For a high-power slab solid-state laser, obtaining high output power and high output beam quality are the most important indicators. Adaptive optics systems can significantly improve beam qualities by compensating for the phase distortions of the laser ...
Shiqing Ma   +8 more
doaj   +1 more source

Sky coverage modeling for the whole sky for laser guide star multiconjugate adaptive optics [PDF]

open access: yes, 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
core   +1 more source

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