An all-photonic focal-plane wavefront sensor [PDF]
Nature Communications, 2020 Adaptive optics wavefront sensors need to be in a pupil plane and are insensitive to certain wavefront-error modes. The authors present a wavefront sensor based on a photonic lantern fibre-mode-converter and deep learning, which can be placed at the same
Barnaby R. M. Norris +4 more
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Impact of CMOS Pixel and Electronic Circuitry in the Performance of a Hartmann-Shack Wavefront Sensor [PDF]
Sensors, 2018 This work presents a numerical simulation of a Hartmann-Shack wavefront sensor (WFS) that assesses the impact of integrated electronic circuitry on the sensor performance, by evaluating a full detection chain encompassing wavefront sampling ...
Úrsula Vasconcelos Abecassis +4 more
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Modelling of Phase Contrast Imaging with X-ray Wavefront Sensor and Partial Coherence Beams [PDF]
Sensors, 2020 The Hartmann wavefront sensor is able to measure, separately and in absolute, the real δ and imaginary part β of the X-ray refractive index. While combined with tomographic setup, the Hartman sensor opens many interesting opportunities behind the direct ...
Ginevra Begani Provinciali +3 more
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A Method Used to Improve the Dynamic Range of Shack–Hartmann Wavefront Sensor in Presence of Large Aberration [PDF]
Sensors, 2022 With the successful application of the Shack–Hartmann wavefront sensor in measuring aberrations of the human eye, researchers found that, when the aberration is large, the local wavefront distortion is large, and it causes the spot corresponding to the ...
Wen Yang, Jianli Wang, Bin Wang
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Highly Stable Spatio-Temporal Prediction Network of Wavefront Sensor Slopes in Adaptive Optics [PDF]
Sensors, 2023 Adaptive Optics (AO) technology is an effective means to compensate for wavefront distortion, but its inherent delay error will cause the compensation wavefront on the deformable mirror (DM) to lag behind the changes in the distorted wavefront ...
Ning Wang +6 more
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Meta Shack–Hartmann wavefront sensor with large sampling density and large angular field of view: phase imaging of complex objects [PDF]
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
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Advancing wavefront sensing: meta Shack-Hartmann sensor enhances phase imaging [PDF]
Light: Science & ApplicationsA meta-lens array-based Shack-Hartmann wavefront sensor has been developed to break the limits imposed by the size and curvature of traditional micro-lenses, which significantly improves both sampling density and angular resolution of phase measurement ...
Xiaoyuan Liu, Zihan Geng, Mu Ku Chen
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Experimental wavefront sensing techniques based on deep learning models using a Hartmann-Shack sensor for visual optics applications [PDF]
Scientific ReportsWavefront sensing is essential in visual optics for evaluating the optical quality in systems, such as the human visual system, and understanding its impact on visual performance. Although traditional methods like the Hartmann-Shack wavefront sensor (HSS)
Juan Sebastián Ramírez-Quintero +3 more
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Dual-angle open field wavefront sensor for simultaneous measurements of the central and peripheral human eye. [PDF]
Biomed Opt Express, 2020 Romashchenko D, Lundström L.
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Light: Advanced Manufacturing, 2022 Adaptive optics systems are used to compensate for wavefront distortions introduced by atmospheric turbulence. The distortions are corrected by an adaptable device, normally a deformable mirror.
Andreas Zepp +3 more
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