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
Centroid estimation for a Shack-Hartmann wavefront sensor based on stream processing.
Sign Up to like & getrecommendations! Published in 2017 at "Applied optics"
DOI: 10.1364/ao.56.006466
Abstract: Using center of gravity to estimate the centroid of the spot in a Shack-Hartmann wavefront sensor, the measurement corrupts with photon and detector noise. Parameters, like window size, often require careful optimization to balance the… read more here.
Keywords: hartmann wavefront; stream; stream processing; wavefront sensor ... See more keywords
Shack-Hartmann wavefront sensor optical dynamic range.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.419311
Abstract: The widely used lenslet-bound definition of the Shack-Hartmann wavefront sensor (SHWS) dynamic range is based on the permanent association between groups of pixels and individual lenslets. Here, we formalize an alternative definition that we term… read more here.
Keywords: hartmann wavefront; dynamic range; lenslet; shack hartmann ... See more keywords
COACH-based Shack-Hartmann wavefront sensor with an array of phase coded masks.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.438379
Abstract: Shack-Hartmann wavefront sensors (SHWS) are generally used to measure the wavefront shape of light beams. Measurement accuracy and the sensitivity of these sensors are important factors for better wavefront sensing. In this paper, we demonstrate… read more here.
Keywords: hartmann wavefront; array; wavefront; shack hartmann ... See more keywords
Optical path difference microscopy with a Shack-Hartmann wavefront sensor.
Sign Up to like & getrecommendations! Published in 2017 at "Optics letters"
DOI: 10.1364/ol.42.002122
Abstract: In this Letter, we show that a Shack-Hartmann wavefront sensor can be used for the quantitative measurement of the specimen optical path difference (OPD) in an ordinary incoherent optical microscope, if the spatial coherence of… read more here.
Keywords: hartmann wavefront; microscopy; wavefront sensor; path difference ... See more keywords
Hartmann wavefront sensor characterization of a high charge vortex beam in the extreme ultraviolet spectral range.
Sign Up to like & getrecommendations! Published in 2018 at "Optics letters"
DOI: 10.1364/ol.43.002780
Abstract: We demonstrate for the first time, to the best of our knowledge, the ability of extreme ultraviolet (XUV) Hartmann wavefront sensors to characterize high charge vortex beams produced by high-order harmonic generation up to the… read more here.
Keywords: high charge; charge vortex; hartmann wavefront; extreme ultraviolet ... See more keywords