Results 81 to 90 of about 1,162,754 (127)
Journal of the European Optical Society-Rapid Publications, 2020 In some active optics system, the influence function, which is the surface deformation ability of an actuator, is measured by directly detecting the mirror surface using an interferometer and the surface correction of the primary mirror is done using the
Yi Zhu, Tao Chen, Hongzhuang Li
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Largedynamic-range Shack-Hartmann wavefront sensor for highly aberrated eyes [PDF]
, 2006 . A conventional Shack-Hartmann wavefront sensor has a limitation that increasing the dynamic range usually requires sacrificing measurement sensitivity. The prototype large-dynamic-range Shack-Hartmann wavefront sensor presented resolves this problem by
Geunyoung Yoon +2 more
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Imaging through atmospheric turbulence using lucky imaging and a Shack-Hartmann wavefront sensor
, 2012 En este trabajo de tesis se presenta el desarrollo de una variante de la técnica lucky imaging, que incluye la integración de un sensor de frente de onda de Shack-Hartmann.
Eduardo Pisano Chávez
core
Deep Learning Wavefront Sensing: Via Raw Shack-Hartmann Images
, 2020 The Delft Center for Systems and Control (DCSC) 'Smart Optics' aim to achieve higher resolution imaging through Adaptive Optics (AO). Adaptive optics is a modern technique for detecting and correcting real-time wavefront aberrations and is widely used in
Bekendam, Matthijs (author)
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Thermal analysis and experimental study of end-pumped Nd: YLF laser at 1053 nm
Photonic Sensors, 2017 We have numerically analyzed the thermal effects in Nd: YLF laser rod. The calculations of temperature and stress distributions in the Nd: YLF laser rod was performed with finite element (FE) simulations.
R. M. El-Agmy, N. Al-Hosiny
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High Power Laser Science and EngineeringIn laser systems requiring a flat-top distribution of beam intensity, beam smoothing is a critical technology for enhancing laser energy deposition onto the focal spot.
Yamin Zheng +9 more
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Flexible Electrowetting-on-Dielectric Microlens Array Sheet
Micromachines, 2019 We have fabricated a fully-flexible, focus-tunable microlens array on a sheet and demonstrated its imaging capabilities. Each liquid lens of the array is individually tunable via electrowetting on dielectric (EWOD) actuation and is situated on a ...
Kari L. Van Grinsven +2 more
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Wavefront sensing based on the inverted Hartmann sensor
, 2019 The classic Hartmann test consists of an array of holes to reconstruct the wavefront from the local deviation of each focal spot, and Shack-Hartmann sensor improved that with an array of microlenses.
Job Mendoza-Hernandez (17510349) +1 more
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Error reduction method for singularity point detection using Shack–Hartmann wavefront sensor [PDF]
, 2013 A new framework is proposed for realizing high-spatial-resolution detection of singularity points in optical vortex beams using a Shack–Hartmann wavefront sensor (SHWS). The method uses a Shack–Hartmann wavefront sensor (SHWS) to record a Hartmanngram. A
Zhang, Heye +5 more
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Large dynamic range Shack-Hartmann wavefront sensor based on adaptive spot matching
Light: Advanced ManufacturingThe Shack-Hartmann wavefront sensor (SHWS) is widely used for high-speed, precise, and stable wavefront measurements. However, conventional SHWSs encounter a limitation in that the focused spot from each microlens is restricted to a single microlens ...
Jiamiao Yang +5 more
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