Results 11 to 20 of about 28,711 (337)

Wavefront image sensor chip [PDF]

Optics Express, 2010
We report the implementation of an image sensor chip, termed wavefront image sensor chip (WIS), that can measure both intensity/amplitude and phase front variations of a light wave separately and quantitatively. By monitoring the tightly confined transmitted light spots through a circular aperture grid in a high Fresnel number regime, we can measure ...
Cui, Xiquan, Ren, Jian, Tearney, Guillermo, Yang, Changhuei   +3 more
openaire   +5 more sources

Large-Dynamic-Range Ocular Aberration Measurement Based on Deep Learning with a Shack-Hartmann Wavefront Sensor. [PDF]

Sensors (Basel)
Zhang H, Zhao J, Chen H, Zhang Z, Yin C, Wang S.   +5 more
europepmc   +2 more sources

Disturbance Modelling for Minimum Variance Control in Adaptive Optics Systems Using Wavefront Sensor Sampled-Data. [PDF]

Sensors (Basel), 2021
Coronel M, Carvajal R, Escárate P, Agüero JC.   +3 more
europepmc   +3 more sources

New achievements in orbital angular momentum beam characterization using a Hartmann wavefront sensor and the Kirkpatrick-Baez active optical system KAOS. [PDF]

J Synchrotron Radiat
Novinec L, Pancaldi M, Capotondi F, De Ninno G, Guzzi F, Kourousias G, Pedersoli E, Ressel B, Rösner B, Simoncig A, Zangrando M, Manfredda M.   +11 more
europepmc   +3 more sources

Simulation-based design optimization of the holographic wavefront sensor in closed-loop adaptive optics

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, Szymon Gladysz, Karin Stein, Wolfgang Osten   +3 more
doaj   +1 more source

Fuchs' Endothelial Corneal Dystrophy evaluation using a high-resolution wavefront sensor. [PDF]

Sci Rep
Belda-Para C, Velarde-Rodríguez G, Marichal-Hernández JG, Velasco-Ocaña M, Trujillo-Sevilla JM, Alejandre-Alba N, Rodríguez-Ramos JM.   +6 more
europepmc   +2 more sources

Shack–Hartmann Wavefront Sensing Based on Four-Quadrant Binary Phase Modulation

Photonics, 2022
Aiming at the problem that it is difficult for the conventional Shack–Hartmann wavefront sensor to achieve high-precision wavefront reconstruction with low spatial sampling, a kind of Shack–Hartmann wavefront sensing technology based on four-quadrant ...
Mengmeng Zhao, Wang Zhao, Kangjian Yang, Shuai Wang, Ping Yang, Fengjiao Zeng, Lingxi Kong, Chao Yang   +7 more
doaj   +1 more source

The bright pyramid wavefront sensor [PDF]

Techniques and Instrumentation for Detection of Exoplanets X, 2021
submitted proceedings to SPIE SPIE Optical Engineering + Applications 2021, Techniques and Instrumentation for Detection of Exoplanets ...
Gerard, Benjamin, Chambouleyron, Vincent, Jensen-Clem, Rebecca, Sauvage, Jean-François   +3 more
openaire   +2 more sources

Reinforcement Learning Environment for Wavefront Sensorless Adaptive Optics in Single-Mode Fiber Coupled Optical Satellite Communications Downlinks

Photonics, 2023
Optical satellite communications (OSC) downlinks can support much higher bandwidths than radio-frequency channels. However, atmospheric turbulence degrades the optical beam wavefront, leading to reduced data transfer rates.
Payam Parvizi, Runnan Zou, Colin Bellinger, Ross Cheriton, Davide Spinello   +4 more
doaj   +1 more source

Improved Wavefront Reconstruction and Correction Strategy for Adaptive Optics System With a Plenoptic Sensor

IEEE Photonics Journal, 2021
Wavefront reconstruction and correction under strong turbulence has become a crucial issue for adaptive optics systems. An approach using a plenoptic sensor has attracted high attention recently.
Jintian Hu, Tao Chen, Xudong Lin, Liang Wang, Qichang An, Zhichong Wang   +5 more
doaj   +1 more source