Results 51 to 60 of about 1,162,754 (126)
Coherence-gated Shack-Hartmann wavefront sensor
, 2010 In the present paper we investigate the possibility of narrowing the depth range of a physical Shack-Hartmann wavefront sensor by using coherence gating.
Tuohy, Simon +3 more
core +1 more source
Light: Science & ApplicationsShack–Hartmann wavefront sensors measure the local slopes of an incoming wavefront based on the displacement of focal spots created by a lenslet array, serving as key components for adaptive optics for astronomical and biomedical imaging.
Gi-Hyun Go +5 more
doaj +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
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
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
An FPGA Architecture for Extracting Real-Time Zernike Coefficients from Measured Phase Gradients [PDF]
, 2015 Zernike modes are commonly used in adaptive optics systems to represent optical wavefronts. However, real-time calculation of Zernike modes is time consuming due to two factors: the large factorial components in the radial polynomials used to define them
Moser, Steve +5 more
core +1 more source
Fundamental And Specific Steps In Shack-Hartmann Wavefront Sensor Design
, 2006 Shack-Hartmann sensors are widely used to measure wavefront aberrations. We present the fundamental and specifie engineering steps in the design of Shack-Hartmann wavefront sensors.
Curatu, George +2 more
core +1 more source
A Shack-Hartmann Sensor for Single-Shot Multi-Contrast Imaging with Hard X-rays
Applied Sciences, 2018 An array of compound refractive X-ray lenses (CRL) with 20 × 20 lenslets, a focal distance of 20cm and a visibility of 0.93 is presented. It can be used as a Shack-Hartmann sensor for hard X-rays (SHARX) for wavefront sensing and permits for true ...
Tomy dos Santos Rolo +7 more
doaj +1 more source
Ophthalmic and Physiological Optics, Volume 45, Issue 7, Page 1581-1590, November 2025.Abstract Introduction This study evaluated the QuickSee autorefractor for measurement of the accommodative response in a cohort of children without significant ametropia, and compared the findings to those determined using the gold‐standard Shin‐Nippon device. Methods Children aged 5–7 years were recruited.
Jane M. Fulton +4 more
wiley +1 more source
, 2021 S.36188-36205Adaptive optics systems are used to compensate for distortions of the wavefront of light induced by turbulence in the atmosphere. Shack-Hartmann wavefront sensors are used to measure this wavefront distortion before correction.
Gladysz, Szymon +4 more
core +1 more source