Results 81 to 90 of about 1,097,686 (233)

Microlens Array-Based Beam Profile and Wavefront Sensor With Physical Constraint Learning

IEEE Photonics Journal
The beam profile and wavefront characteristics of laser beams are essential for numerous laser applications, including micromachining and microfabrication.
Feng-Chun Hsu, Chun-Yu Lin, Chia-Yuan Chang, Shean-Jen Chen   +3 more
doaj   +1 more source

Using Spherical-Harmonics Expansions for Optics Surface Reconstruction from Gradients

Sensors, 2017
In this paper, we propose a new algorithm to reconstruct optics surfaces (aka wavefronts) from gradients, defined on a circular domain, by means of the Spherical Harmonics.
Juan Manuel Solano-Altamirano, Alejandro Vázquez-Otero, Danila Khikhlukha, Raquel Dormido, Natividad Duro   +4 more
doaj   +1 more source

Optimization of wavefront reconstruction accuracy for conjugate shift differential absolute testing. [PDF]

Sci Rep, 2022
Zhu X, Wang D, Zhang M, Liu B, Tian A, Jin G, Zheng X.   +6 more
europepmc   +1 more source

Optoelectronic Interfaces for Nongenetic Modulation of Excitable Tissues

Small Methods, EarlyView.
This review summarizes recent advances in nongenetic optoelectronic technologies for the modulation of excitable biotissues, covering material selection, device design, and working principles, as well as characterization methods. Representative applications in in vitro and in vivo models of the cardiac, central, and peripheral nervous systems are ...
Qi Wang, Jinghua Li
wiley   +1 more source

Fourier Ptychography Reconstruction with Wavefront Disturbance Correction

, 2023
Zhiming Tian, Ming Zhao
openalex   +1 more source

Phase Hologram by Acoustic Metasurfaces

Small Structures, EarlyView.
This work has achieved a breakthrough in holographic communication, realizing phase holographic imaging. The proposed phase holographic concept overcomes the limitations of traditional amplitude holographic energy attenuation. The design of its amplitude compensation method further addresses the key challenge of phase holographic imaging clarity ...
Xiao Guo, Haohan Zeng, Xinghao Hu, Youyu Mo, Xinzong Wang, Xiao Liang, Yusen Wu, Tingting Li, Haiyan Fan, Yifan Zhu, Hui Zhang, Badreddine Assouar   +11 more
wiley   +1 more source

Wavefront Reconstruction for a Holographic Modal Wavefront Sensor Based on Extreme Learning Machine

IEEE Photonics Journal
The intermodal crosstalk effect as well as the limited dynamic range of holographic modal wavefront sensors (HMWFSs) significantly affect their wavefront-sensing accuracy.
Han Cao, Kainan Yao, Jianli Wang, Minglu Li, Leqiang Yang, Zhiqiang Xu   +5 more
doaj   +1 more source

Wavefront Reconstruction of Discontinuous Phase Objects Using Directional Derivatives

, 2023
Ricardo Legarda-Sáenz, Jorge L. Flores, Matías Fernández Lakatos   +2 more
openalex   +1 more source

Anomalous‐Energy Runaway Electrons Originating in Fast Ionisation Wave During Pulsed Gas Breakdown

High Voltage, EarlyView.
ABSTRACT Anomalous‐energy runaway electrons (RAEs), whose energy exceeds the maximum potential difference across the discharge gap, are widely observed in various plasma phenomena. This study investigates the origination of anomalous‐energy RAEs in fast ionisation waves (FIWs) formed during pulsed gas breakdown.
Bangdou Huang, Chenhua Ren, Cheng Zhang, Edl Schamiloglu, Tao Shao   +4 more
wiley   +1 more source

A Multi-Deformable-Mirror 500 Hz Adaptive Optical System for Atmospheric Turbulence Simulation, Real-Time Reconstruction, and Wavefront Correction Using Bimorph and Tip-Tilt Correctors

Photonics
Atmospheric turbulence introduces distortions to the wavefront of propagating optical radiation. It causes image resolution degradation in astronomical telescopes and significantly reduces the power density of radiation on the target in focusing ...
Ilya Galaktionov, Vladimir Toporovsky
doaj   +1 more source