Results 61 to 70 of about 5,559 (209)
, 2010 Near-diffraction limited imaging and spectroscopy in the visible on large (8-10 meter) class telescopes has proved to be beyond the capabilities of current adaptive optics technologies, even when using laser guide stars.
King, David +4 more
core +1 more source
Modeling low order aberrations in laser guide star adaptive optics systems [PDF]
, 2007 When using a laser guide star (LGS) adaptive optics (AO) system, quasi-static aberrations are observed between the measured wavefronts from the LGS wavefront sensor (WFS) and the natural guide star (NGS) WFS.
Bouchez, Antonin H. +2 more
core +1 more source
Wavefront subaperture stitching with Shack-Hartmann sensor [PDF]
SPIE Proceedings, 2015 A new approach for large field of view measurement using the Shack-Hartmann wavefront sensor (SHWS) is proposed. The object to be measured is divided into several subaperture units. Each unit is measured using the SHWS and a new algorithm is applied to stitch these units.
Li, Hongru +5 more
openaire +2 more sources
Retinal Peripheral Defocus and Peripheral Refractive Measurement Techniques: A Review
Journal of Ophthalmology, Volume 2026, Issue 1, 2026.The theory of retinal peripheral defocus currently represents the prevailing paradigm for myopia prevention and control. Research studies on peripheral refraction indicate that peripheral defocus is significantly associated with the management and progression of myopia.
Lei Chang, Tao Jin, Karuna Sharma
wiley +1 more source
High-Resolution Imaging in the Visible on Large Ground-Based Telescopes
, 2014 Lucky Imaging combined with a low order adaptive optics system has given the highest resolution images ever taken in the visible or near infrared of faint astronomical objects.
Crass, Jonathan +13 more
core +1 more source
Cumulative wavefront reconstructor for the Shack-Hartmann sensor
Inverse Problems & Imaging, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhariy, Mariya +3 more
openaire +2 more sources
Journal of Ophthalmology, Volume 2026, Issue 1, 2026.Purpose To compare the corneal spherical component (SC), regular astigmatism (RA), irregular astigmatism (IA, including asymmetry and irregularity), and visual quality 6 years after small incision lenticule extraction (SMILE) and laser subepithelial keratomileusis (LASEK) for mild‐to‐moderate myopia.
Hua Li +7 more
wiley +1 more source
Adaptive optics design for high-energy kW-class multi-slab laser amplifiers
High Power Laser Science and EngineeringWe demonstrate real-time wavefront correction in a high-energy high-average-power DiPOLE100/Bivoj laser using adaptive optics. A bimorph deformable mirror and a Shack–Hartmann wavefront sensor reduced wavefront error 10-fold and improved the Strehl ratio
Tomáš Paliesek +4 more
doaj +1 more source
Fast minimum variance wavefront reconstruction for extremely large telescopes [PDF]
, 2010 We present a new algorithm, FRiM (FRactal Iterative Method), aiming at the reconstruction of the optical wavefront from measurements provided by a wavefront sensor.
Béchet +25 more
core +1 more source
Metasurfaces in Adaptive Optics: A New Opportunity in Optical Wavefront Sensing
Laser &Photonics Reviews, Volume 19, Issue 24, December 17, 2025.Wavefront sensing constitutes a critical component of adaptive optics systems, aimed at quantitatively measuring distorted wavefronts and enabling closed‐loop correction in optical setups. Metasurfaces, as planar optical elements composed of nanoscale structures, provide exceptional freedom in modulating multiple dimensions of the light field.
Rundong Fan +3 more
wiley +1 more source