Results 31 to 40 of about 1,162,754 (126)

Coded Shack-Hartmann Wavefront Sensor

, 2016
Wavefront sensing is an old yet fundamental problem in adaptive optics. Traditional wavefront sensors are limited to time-consuming measurements, complicated and expensive setup, or low theoretically achievable resolution. In this thesis, we introduce
Wang, Congli
core   +1 more source

Software support for Shack-Hartmann wavefront sensor [PDF]

, 2011
katedra: MTI; přílohy: CD; rozsah: 59 sCílem této diplomové práce bylo navrhnout a realizovat v prostředí MATLAB programový balík pro měření vlnoplochy Shack-Hartmannovým senzorem, kde se spotdiagram, někdy též označovaný jako hartmanngram snímá pro co ...
Mastík, Jiří
core   +1 more source

'Shack-Hartmann Wavefront Sensor based on an Industrial Smart Camera

, 2012
Wavefront sensing is important in many optical measurement systems and adaptive optics. The speed of the wavefront sensor determines the achievable temporal resolution of dynamic measurements and the bandwidth of adaptive optics systems.
Paris, René, Thier, Markus, Schitter, Georg, Thurner, Thomas   +3 more
core   +4 more sources

Drop‐on‐Demand Printed Negative Dielectric Anisotropy Liquid Crystal Droplets for Adaptive Complex Beam Manipulation and Assessment

Advanced Functional Materials, EarlyView.
Printed negative‐dielectric‐anisotropy liquid‐crystal droplets enable multidimensional full‐vectorial optical‐field sensing across polarization, phase, and wavelength, while also generating tunable skyrmionic‐like complex optical fields. ABSTRACT Adaptive manipulation of vectorial optical fields is important for optical metrology, imaging, and ...
Jinge Guo, Xuke Qiu, Runchen Zhang, Qihao Han, Liangyu Deng, Yishun Lu, Zimo Zhao, Mengmeng Li, Waqas Kamal, Junseok Ma, Yongge Ma, Steve J. Elston, Alfonso A. Castrejón‐Pita, Stephen M. Morris, Chao He   +14 more
wiley   +1 more source

A new wavefront sensor with polar symmetry: Quantitative comparisons with a Shack-Hartmann wavefront sensor

, 2006
PURPOSE:A novel wavefront sensor has been developed. It follows the same principle of the Shack-Hartmann wavefront sensor in that it is based on slope information.
Wallace Chamon, Jarbas Castro, Paulo Schor, Castro, Jarbas, Carvalho, Luis Alberto, Luis Alberto Carvalho, Chamon, Wallace, Schor, Paulo   +7 more
core   +1 more source

Measuring Ocular Aberrations Sequentially Using a Digital Micromirror Device

Micromachines, 2019
The Hartmann⁻Shack wavefront sensor is widely used to measure aberrations in both astronomy and ophthalmology. Yet, the dynamic range of the sensor is limited by cross-talk between adjacent lenslets.
Alessandra Carmichael Martins, Brian Vohnsen   +1 more
doaj   +1 more source

Small Mirrors for Small Satellites: Design of the Deformable Mirror Demonstration Mission CubeSat (DeMi) Payload

Frontiers in Astronomy and Space Sciences, 2021
The Deformable Mirror Demonstration Mission (DeMi) is a technology demonstration CubeSat to test a 140 actuator micro-electromechanical system (MEMS) deformable mirror in low-Earth orbit.
Ewan S. Douglas, Ewan S. Douglas, Greg Allan, Rachel Morgan, Bobby G. Holden, Jennifer Gubner, Christian Haughwout, Paula do Vale Pereira, Yinzi Xin, Yinzi Xin, John Merk, Kerri L. Cahoy, Kerri L. Cahoy   +12 more
doaj   +1 more source

The diagnostics and laser infrastructure at the Soft X‐ray Port of the European XFEL

Journal of Synchrotron Radiation, Volume 33, Issue 5, Page 1531-1541, September 2026.
The diagnostics and laser infrastructure of the Soft X‐ray Port (SXP) at the European X‐ray Free Electron Laser are presented.The diagnostics and laser infrastructure of the Soft X‐ray Port (SXP) at the European X‐ray Free Electron Laser are presented.
Patrik Grychtol, Vahagn Vardanyan, Pranav Bhardwaj, Michael Heber, David Doblas-Jimenez, Ekaterina Tikhodeeva, Serguei Molodtsov, Manuel Izquierdo   +7 more
wiley   +1 more source

Turbulence characterisation for Astronomical Observatories [PDF]

, 2012
Atmospheric turbulence has two effects in astronomy; (i) the broadening of the point spread function due to phase fluctuations limiting the resolution of imaging and (ii) producing intensity fluctuations known as scintillation.
SHEPHERD, HARRY,WILLIAM, Shepherd, Harry William   +1 more
core  

Turbulent parameters at different heights in the atmosphere. Shack–Hartmann wavefront sensor data

Solar-Terrestrial Physics, 2022
The paper presents the results of studies of wavefront distortions at different heights in the atmosphere. We have used measurement wavefront data to determine optical turbulence parameters along the line of sight of the Large Solar Vacuum Telescope ...
Shikhovtsev A. Y., Kiselev A. V., Kovadlo P. G., Kolobov D. Y., Russkikh I. V., Tomin V. E   +5 more
doaj   +1 more source