Results 51 to 60 of about 3,571 (136)

Meta Shack–Hartmann wavefront sensor with large sampling density and large angular field of view: phase imaging of complex objects

Light: Science & Applications
Shack–Hartmann wavefront sensors measure the local slopes of an incoming wavefront based on the displacement of focal spots created by a lenslet array, serving as key components for adaptive optics for astronomical and biomedical imaging.
Gi-Hyun Go, Dong-gu Lee, Jaeyeon Oh, Gookho Song, Doeon Lee, Mooseok Jang   +5 more
doaj   +1 more source

Wavefront Prediction for Adaptive Optics Without Wavefront Sensing Based on EfficientNetV2-S

Photonics
Adaptive optics (AO) aims to counteract wavefront distortions caused by atmospheric turbulence and inherent system errors. Aberration recovery accuracy and computational speed play crucial roles in its correction capability. To address the issues of slow
Zhiguang Zhang, Zelu Huang, Jiawei Wu, Zhaojun Yan, Xin Li, Chang Liu, Huizhen Yang   +6 more
doaj   +1 more source

Graphics processing unit (GPU) aided wavefront-based autofocusing in microscopy

AIP Advances, 2018
Based on the wavefront sensing and propagation, the wavefront-based autofocus approach is proposed for potentially adopted in rapid autofocusing since it can precisely locate the focal plane but only requiring much fewer multi-focal image captures ...
Zhilong Jiang, Yan Kong, Fei Liu, Cheng Liu, Shouyu Wang   +4 more
doaj   +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

Laser Remote Sensing of Seismic Wave with Sub-Millimeter Scale Amplitude Based on Doppler Characteristics Extracted from Wavefront Sensor

Photonics
Laser remote sensing of earthquake waves has the potential to be used in many applications. This article shows a Doppler model for laser remote sensing of seismic waves based on a wavefront sensor. The longitudinal vibration wave is analyzed using remote
Quan Luo, Hongsheng Luo, Guihan Wu, Xiang Ji, Jinshan Su, Wei Jiang   +5 more
doaj   +1 more source

Construction and use of an adaptive optics two-photon microscope with direct wavefront sensing. [PDF]

Nat Protoc, 2023
Yao P, Liu R, Broggini T, Thunemann M, Kleinfeld D.   +4 more
europepmc   +1 more source

Real-Time Wavefront Sensing at High Resolution with an Electrically Tunable Lens. [PDF]

Sensors (Basel), 2023
Oliva-García R, Cairós C, Trujillo-Sevilla JM, Velasco-Ocaña M, Rodríguez-Ramos JM.   +4 more
europepmc   +1 more source

Cross-Correlation Algorithm Based on Speeded-Up Robust Features Parallel Acceleration for Shack–Hartmann Wavefront Sensing

Photonics
A cross-correlation algorithm to obtain the sub-aperture shifts that occur is a crucial aspect of scene-based SHWS (Shack–Hartmann wavefront sensing).
Linxiong Wen, Xiaohan Mei, Yi Tan, Zhiyun Zhang, Fangfang Chai, Jiayao Wu, Shuai Wang, Ping Yang   +7 more
doaj   +1 more source

Fast converging iterative wavefront sensing for scatter compensation in multi-photon fluorescence microscopy

JPhys Photonics
Adaptive optics can increase the imaging depth of nonlinear scanning microscopy by compensating for wavefront aberrations introduced by the sample using a spatial light modulator.
Kibum Nam, Maria Borozdova, Jung-Hoon Park, Alexander Jesacher   +3 more
doaj   +1 more source

Special Issue "EUV and X-ray Wavefront Sensing". [PDF]

Sensors (Basel), 2022
Idir M, Cocco D, Huang L.
europepmc   +1 more source