Filtered Influence Function of Deformable Mirror for Wavefront Correction in Laser Systems
Photonics, 2021 An influence function filtering method (IFFM) is presented to improve the wavefront correction capability in laser systems by curbing the correction performance degradation resulted from the IF measurement noise.
Yamin Zheng +5 more
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Centroid-Predicted Deep Neural Network in Shack-Hartmann Sensors
IEEE Photonics Journal, 2022 The Shack-Hartmann wavefront sensor produces incorrect wavefront measurements when some sub-spots are weak and missing. In this paper, a method is proposed to predict the centroids of these sub-spots for the Shack-Hartmann wavefront sensor based on the ...
Mengmeng Zhao +6 more
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Calibrating CGH Substrate TWE and Simulating Adjustment Error in Cylindrical Surface Measurement
IEEE Photonics Journal, 2022 Computer-generated hologram (CGH) is a diffractive optical element that has been commonly used as wavefront corrector in the interferometer and can be accurately manufactured to meet the requirements of high-precision detection.
Linghua Zhang +5 more
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Fast holographic scattering compensation for deep tissue biological imaging
Nature Communications, 2021 Wavefront shaping is used to overcome scattering in biological tissues during imaging, but determining the compensation is slow. Here, the authors use holographic phase stepping interferometry, where new phase information is updated after each ...
Molly A. May +5 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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Hartmann wavefront measurements at FLASH [PDF]
SPIE Proceedings, 2013 Published by SPIE, Bellingham, Wash.
Keitel, Barbara +8 more
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Adaptive particle image velocimetry based on sharpness metrics
Journal of the European Optical Society-Rapid Publications, 2018 Background Optical distortions can significantly deteriorate the measurement accuracy in particle image velocimetry systems. Such distortions can occur at fluctuating phase boundaries during flow measurement and result from the accompanied refractive ...
M. Teich +4 more
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Simulation Analysis of a Wavefront Reconstruction of a Large Aperture Laser Beam
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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Curvature sensor for ocular wavefront measurement
Optics Letters, 2006 We describe a new wavefront sensor for ocular aberration determination, based on the curvature sensing principle, which adapts the classical system used in astronomy for the living eye's measurements. The actual experimental setup is presented and designed following a process guided by computer simulations to adjust the design parameters for optimal ...
Díaz Douton, Fernando +3 more
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Performance Characterization of Deep-Phase-Retrieval Shack-Hartmann Wavefront Sensors
IEEE Photonics Journal, 2023 Shack-Hartmann wavefront sensor (SHWFS) is the most popular wavefront sensor in adaptive optics systems. The Deep-Phase-Retrieval Wavefront Reconstruction (DPRWR) method, which was proposed by our group previously, is a kind of deep learning-based ...
Manting Zhang, Youming Guo
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