Results 21 to 30 of about 656,340 (251)

Impact of Pupil Aberrations on Wavefront Manipulation [PDF]

EPJ Web of Conferences, 2021
A systematic and quantitative analysis is given of the impact of pupil aberrations on the imaging performance in wavefront manipulation applications using adaptive optical elements.
Nobis Thomas
doaj   +1 more source

Wavefront shaping of a Bessel light field enhances light sheet microscopy with scattered light [PDF]

, 2014
The project was supported by the UK Engineering and Physical Sciences Research Council, RS MacDonald Charitable Trust, SULSA, and the St. Andrews 600th anniversary BRAINS appeal. K. D.
Vettenburg, T.; id_orcid, J. Nylk, K. Dholakia, Nylk, J., C. Mitchell, Vettenburg, T., Gunn-Moore, F. J., T. Vettenburg, Mitchell, C., Dholakia, K., Nylk, J.; id_orcid, F. J. Gunn-Moore   +11 more
core   +1 more source

Simulation and experimental investigation on the wavefront correction performance of a dual magnetic connection deformable mirror under high-power laser irradiation

Frontiers in Physics, 2023
Deformable mirrors (DMs) are widely used in high-power laser systems to improve the output beam quality. However, under high-power laser irradiation, the heat accumulates on the DM mirror surface and results in high-power laser induced distortions (LID),
Yamin Zheng, Yamin Zheng, Yongchen Zhuang, Yongchen Zhuang, Shibing Lin, Shibing Lin, Deen Wang, Deen Wang, Yifan Zhang, Yifan Zhang, Lei Huang, Lei Huang   +11 more
doaj   +1 more source

An Efficient Correction Algorithm for Eliminating Image Misalignment Effects on Co-Phasing Measurement Accuracy for Segmented Active Optics Systems. [PDF]

PLoS ONE, 2016
The misalignment between recorded in-focus and out-of-focus images using the Phase Diversity (PD) algorithm leads to a dramatic decline in wavefront detection accuracy and image recovery quality for segmented active optics systems.
Dan Yue, Shuyan Xu, Haitao Nie, Zongyang Wang   +3 more
doaj   +1 more source

Research on BER performance of the OAM-SK FSO communication system with wavefront phase correction

Tongxin xuebao, 2022
On the basis of Gerchberg-Saxton (GS) algorithm and angular-spectrum theory, an improved wavefront phase correction algorithm to the Laguerre-Gaussian (LG) beams was proposed for the orbital angular momentum-shift keying (OAM-SK) modulation-based free ...
Shuang LI, Ping WANG, Tao LIU, Yuting PAN, Wei WANG   +4 more
doaj   +2 more sources

Deep Learning-Based Prediction Algorithm on Atmospheric Turbulence-Induced Wavefront for Adaptive Optics

IEEE Photonics Journal, 2022
Correction performance of an adaptive optics (AO) system is severely limited by its system latency under high temporal frequency distortions. Wavefront prediction methods has been proven to be an effective way to compensate system delay.
Ning Wang, Licheng Zhu, Shuai Ma, Wang Zhao, Xinlan Ge, Zeyu Gao, Kangjian Yang, Shuai Wang, Ping Yang   +8 more
doaj   +1 more source

Effect of Wavefront Distortion on the Performance of Coherent Detection Systems: Theoretical Analysis and Experimental Research

Photonics, 2023
Atmospheric turbulence causes signal beam wavefront distortion at the receiving end of a coherent detection system, which decreases the system mixing efficiency.
Shangjun Yang, Tian Xing, Chenghu Ke, Jingyuan Liang, Xizheng Ke   +4 more
doaj   +1 more source

A Local Threshold Checkerboard Algorithm for Adaptive Optics System With a Plenoptic Sensor

IEEE Photonics Journal, 2022
Adaptive optics systems will encounter challenges under strong atmospheric turbulence conditions. Recently, a modified approach based on plenoptic sensor has attracted considerable attention.
Zhichong Wang, Tao Chen, Xudong Lin, Liang Wang, Qichang An, Jintian Hu   +5 more
doaj   +1 more source

Fast holographic scattering compensation for deep tissue biological imaging

Nature Communications, 2021
Wavefront shaping is used to overcome scattering in biological tissues during imaging, but determining the compensation is slow. Here, the authors use holographic phase stepping interferometry, where new phase information is updated after each ...
Molly A. May, Nicolas Barré, Kai K. Kummer, Michaela Kress, Monika Ritsch-Marte, Alexander Jesacher   +5 more
doaj   +1 more source

Forecasting wavefront corrections in an adaptive optics system

Journal of Astronomical Telescopes, Instruments, and Systems, 2022
We use telemetry data from the Gemini North ALTAIR adaptive optics system to investigate how well the commands for wavefront correction (both Tip/Tilt and high-order turbulence) can be forecasted in order to reduce lag error (due to wavefront sensor averaging and computational delays) and improve delivered image quality.
Hafeez, Rehan, Archinuk, Finn, Fabbro, Sébastien, Teimoorinia, Hossen, Véran, Jean-Pierre   +4 more
openaire   +2 more sources