Automatic wavefront reconstruction on single interferogram with spatial carrier frequency using Fourier transform
Sign Up to like & getrecommendations! Published in 2020 at "Optoelectronics Letters"
DOI: 10.1007/s11801-020-9051-z
Abstract: Optical interferometry can be applied to obtain the wavefront phase and reconstruct the three-dimensional wavefront by analyzing interference fringes. Single interferogram analysis based on two-dimensional Fourier transform is proposed. This method just needs to acquire… read more here.
Keywords: carrier; carrier frequency; fourier transform; single interferogram ... See more keywords
Astigmatic outcomes in myopic wavefront-guided laser in situ keratomileusis versus wavefront-guided photorefractive keratectomy using vector analysis.
Sign Up to like & getrecommendations! Published in 2018 at "Journal of cataract and refractive surgery"
DOI: 10.1016/j.jcrs.2018.07.022
Abstract: PURPOSE To compare astigmatic outcomes between eyes having wavefront-guided laser in situ keratomileusis (LASIK) and eyes having wavefront-guided photorefractive keratectomy (PRK). SETTING Byers Eye Institute, Stanford University School of Medicine, Palo Alto, California, USA. DESIGN Prospective… read more here.
Keywords: wavefront; astigmatic outcomes; vector analysis; wavefront guided ... See more keywords
Multi-focal Shack–Hartmann wavefront sensing with self-interference Chinese Taiji-lenslet array
Sign Up to like & getrecommendations! Published in 2021 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2021.106645
Abstract: Abstract Shack–Hartmann wavefront sensor (SHWS) is a traditional method of obtaining the phase information of the incident light. As a classical method, SHWS has the merit of simple structure, good usability, real-time monitoring and wide… read more here.
Keywords: lenslet array; self interference; taiji lenslet; shack hartmann ... See more keywords
Performance analysis of coherent free space optical communications with sequential pyramid wavefront sensor
Sign Up to like & getrecommendations! Published in 2018 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2017.09.030
Abstract: Abstract Based-on the previous study on the theory of the sequential pyramid wavefront sensor (SPWFS), in this paper, the SPWFS is first applied to the coherent free space optical communications (FSOC) with more flexible spatial… read more here.
Keywords: pyramid wavefront; wavefront sensor; coherent free; sequential pyramid ... See more keywords
Shock-induced cavitation and wavefront analysis inside a water droplet
Sign Up to like & getrecommendations! Published in 2021 at "Physics of Fluids"
DOI: 10.1063/5.0063827
Abstract: The objective of the present study is to develop a basic understanding of the interaction of shock waves with density inhomogeneities. We consider here the particular instance of a planar air shock impinging on a… read more here.
Keywords: water droplet; cavitation; shock; wavefront ... See more keywords
High-precision wavefront reconstruction from Shack-Hartmann wavefront sensor data by a deep convolutional neural network
Sign Up to like & getrecommendations! Published in 2021 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/abf708
Abstract: The Shack–Hartmann wavefront sensor (SHWFS) has been widely used for measuring aberrations in adaptive optics systems. However, its traditional wavefront reconstruction method usually has limited precision under field conditions because the weight-of-center calculation is affected… read more here.
Keywords: hartmann wavefront; wavefront sensor; wavefront reconstruction; shack hartmann ... See more keywords
X-ray free-electron laser wavefront sensing using the fractional Talbot effect
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Synchrotron Radiation"
DOI: 10.1107/s1600577519017107
Abstract: A wavefront sensor for an X-ray free-electron laser has been developed using the fractional Talbot effect. This wavefront sensor enables measurements over a wide range of energies, as is common on X-ray instruments, and is… read more here.
Keywords: free electron; electron laser; ray; ray free ... See more keywords
A High-Speed, Wavelength Invariant, Single-Pixel Wavefront Sensor With a Digital Micromirror Device
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2925972
Abstract: The wavefront measurement of a light beam is a complex task, which often requires a series of spatially resolved intensity measurements. For instance, a detector array may be used to measure the local phase gradient… read more here.
Keywords: resolution; single pixel; wavefront; high speed ... See more keywords
Three-sided pyramid wavefront sensor, part 1: simulations and analysis for astronomical adaptive optics
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Astronomical Telescopes, Instruments, and Systems"
DOI: 10.1117/1.jatis.7.4.049001
Abstract: Abstract. The Giant Segmented Mirror Telescopes (GSMTs) including the Giant Magellan Telescope (GMT), the Thirty Meter Telescope (TMT), and the European Extremely Large Telescope (E-ELT), all have extreme adaptive optics (ExAO) instruments planned that will… read more here.
Keywords: wavefront sensor; adaptive optics; performance; wavefront ... See more keywords
High-resolution wavefront reconstruction using multiframe Shack–Hartmann wavefront sensor measurements
Sign Up to like & getrecommendations! Published in 2020 at "Optical Engineering"
DOI: 10.1117/1.oe.59.11.113102
Abstract: Abstract. High-resolution imaging with large ground-based telescopes is limited by atmospheric turbulence. The observed images are usually blurred with unknown point spread functions (PSFs) defined in terms of the wavefront distortions of light. To effectively… read more here.
Keywords: wavefront; shack hartmann; high resolution;
Multiscale optimization of the geometric wavefront sensor.
Sign Up to like & getrecommendations! Published in 2021 at "Applied optics"
DOI: 10.1364/ao.423536
Abstract: Since wavefront distortions cannot be directly measured from an image, a wavefront sensor (WFS) can use intensity variations from a point source to estimate slope or curvature of a wavefront. However, processing of measured aberration… read more here.
Keywords: wavefront sensor; geometric wfs; multiscale optimization; sensor ... See more keywords