Influence of Image Processing Method on Wavefront Reconstruction Accuracy of Large-Aperture Laser
Photonics, 2023 In order to improve the wavefront reconstruction accuracy of a large-aperture laser, this paper proposed an adaptive window preprocessing algorithm based on the threshold center of gravity method (AW-TCoG).
Gangyu Wang, Zaihong Hou
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Simulation Analysis of a Wavefront Reconstruction of a Large Aperture Laser Beam [PDF]
Sensors, 2023 In order to solve the problem of atmospheric influence on the far-field measurement of the quality of a laser beam, we proposed a direct wavefront measurement system based on the Hartmann detection principle, which can measure large apertures and high ...
Gangyu Wang +4 more
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Super-resolution wavefront reconstruction
Astronomy & Astrophysics, 2022 Super-Resolution (SR) is a technique that seeks to upscale the resolution of a set of measured signals. SR retrieves higher-frequency signal content by combining multiple lower resolution sampled data sets.
Pierre Guiraud +10 more
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Wavefront Reconstruction of Shack-Hartmann with Under-Sampling of Sub-Apertures
Photonics, 2023 Shack-Hartmann wavefront sensor plays a key role in adaptive optics (AO) systems, which detect the aberrant wavefront by an array of micro-lenslets across the aperture pupil.
Shuyun Wu
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IEEE Photonics Journal, 2021 Wavefront reconstruction and correction under strong turbulence has become a crucial issue for adaptive optics systems. An approach using a plenoptic sensor has attracted high attention recently.
Jintian Hu, Liang Wang, Qichang An
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Optical wavefront reconstruction: Theory and numerical methods [PDF]
SIAM Review, 2002 Optical wavefront reconstruction algorithms played a central role in the effort to identify gross manufacturing errors in NASA's Hubble Space Telescope (HST).
Burke, James V. +2 more
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Method for distortion correction of multi-layered surface reconstruction using time-gated wavefront sensing approach [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 In order to estimate the multi-layer surface profile and to detect the inter-layer surfaces defects, gated wavefront sensing approach has been proposed in the previous works [1, 2].
Tan C. S. +4 more
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Fourier transform-wavefront reconstruction for the pyramid wavefront sensor [PDF]
1st AO4ELT conference - Adaptive Optics for Extremely Large Telescopes, 2009 The application of Fourier-transform reconstruction techniques to the pyramid wavefront sensor has been investigated. A preliminary study based on end-to-end simulations of an adaptive optics system with ≈40x40 subapertures and actuators shows ...
Quirós-Pacheco, Fernando +5 more
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Large dynamic range Shack-Hartmann wavefront sensing based on a graph-theoretic computational model [PDF]
Light: Science & ApplicationsThe Shack-Hartmann wavefront sensor (SHWS) is a widely used non-interferometric wavefront measurement technique. However, for high-slope wavefronts, spot crosstalk and asymmetric distortion cause severe matching ambiguity and centroiding errors.
Lintong Du +9 more
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Fourier wavefront reconstruction with a pyramid wavefront sensor
Adaptive Optics Systems VI, 2018 International audienceUsing Fourier methods to reconstruct the phase measured by a wavefront sensor (WFS) can significantly re- duce the number of computations required, as well as easily enable predictive reconstruction methods based on knowledge of the
Charlotte Z. Bond +11 more
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