Results 61 to 70 of about 4,053 (141)

Deep Tissue Wavefront Estimation for Sensorless Aberration Correction

MATEC Web of Conferences, 2015
The multiple light scattering in biological tissues limits the measurement depth for traditional wavefront sensor. The attenuated ballistic light and the background noise caused by the diffuse light give low signal to noise ratio for wavefront ...
Ibrahimovic Emina, Taoa Xiaodong, Reinig Marc, Li Qinggele, Kubby Joel   +4 more
doaj   +1 more source

Shack-Hartmann wavefront sensor optical dynamic range. [PDF]

Opt Express, 2021
Akondi V, Dubra A.
europepmc   +1 more source

Wavefront sensor-less adaptive optics using deep reinforcement learning. [PDF]

Biomed Opt Express, 2021
Durech E, Newberry W, Franke J, Sarunic MV.   +3 more
europepmc   +1 more source

Advancing wavefront sensing: meta Shack-Hartmann sensor enhances phase imaging

Light: Science & Applications
A 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
doaj   +1 more source

Optimization of Iterative Control Algorithms for High-Resolution Adaptive Optics Systems

IEEE Photonics Journal
As the number of wavefront sensor subapertures and deformable mirror actuators in adaptive optics systems increases, the computational time of the direct gradient wavefront control algorithm is excessively long, which is a major factor affecting the ...
Shenghu Liu, Wang Zhao, Shuai Wang, Kangjian Yang, Ping Yang, Hongli Guan, Han Guo, Ruifeng He   +7 more
doaj   +1 more source

Multi-Spectral and Single-Shot Wavefront Detection Technique Based on Neural Networks

Photonics
Conventional wavefront sensors face challenges when detecting frequency-domain information. In this study, we developed a high-precision, and fast multi-spectral wavefront detection technique based on neural networks.
Xunzheng Li, Aoyang Wang, Mao Fan, Lianghong Yu, Xiaoyan Liang   +4 more
doaj   +1 more source

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   +1 more source

Deep learning enabled robust wavefront sensing for active beam smoothing with a continuous phase modulator

High Power Laser Science and Engineering
In 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, Yifan Zhang, Liquan Guo, Pei Li, Zichao Wang, Yongchen Zhuang, Shibing Lin, Qiao Xue, Deen Wang, Lei Huang   +9 more
doaj   +1 more source

Experimental Research on the Correction of Vortex Light Wavefront Distortion

Photonics
Wavefront distortion occurs when vortex beams are transmitted in the atmosphere. The turbulence effect greatly affects the transmission of information, so it is necessary to use adaptive optical correction technology to correct the wavefront distortion ...
Yahang Ge, Xizheng Ke
doaj   +1 more source

Sub-Millisecond Phase Retrieval for Phase-Diversity Wavefront Sensor. [PDF]

Sensors (Basel), 2020
Wu Y, Guo Y, Bao H, Rao C.
europepmc   +1 more source