Results 1 to 10 of about 5,607 (142)

Adaptive wavefront correction structured illumination holographic tomography. [PDF]

Sci Rep, 2019
AbstractIn this study, a novel adaptive wavefront correction (AWC) technique is implemented on a compactly developed structured illumination holographic tomography (SI-HT) system. We propose a mechanical movement-free compact scanning architecture for SI-HT systems with AWC, implemented by designing and displaying a series of computer-generated ...
Balasubramani V, Tu HY, Lai XJ, Cheng CJ.   +3 more
europepmc   +4 more sources

Combined hardware and computational optical wavefront correction. [PDF]

Biomed Opt Express, 2018
In many optical imaging applications, it is necessary to overcome aberrations to obtain high-resolution images. Aberration correction can be performed by either physically modifying the optical wavefront using hardware components, or by modifying the wavefront during image reconstruction using computational imaging. Here we address a longstanding issue
South FA, Kurokawa K, Liu Z, Liu YZ, Miller DT, Boppart SA.   +5 more
europepmc   +3 more sources

Experimental Verification of Model-Based Wavefront Sensorless Adaptive Optics System for Large Aberrations [PDF]

Micromachines
To address the limitations of conventional wavefront sensorless adaptive optics (AO) systems regarding iteration efficiency and convergence speed, this study conducts an experimental validation of a model-based wavefront sensorless AO approach.
Huizhen Yang, Yongqiang Miao, Peng Chen, Zhiguang Zhang, Zhaojun Yan   +4 more
doaj   +2 more sources

Improving Focal Photostimulation of Cortical Neurons with Pre-derived Wavefront Correction [PDF]

Frontiers in Cellular Neuroscience, 2017
Recent progress in neuroscience to image and investigate brain function has been made possible by impressive developments in optogenetic and opto-molecular tools.
Vincent R. Daria, Julian M. C. Choy, Sharmila S. Sané, Woei M. Lee, Christian Stricker, Christian Stricker, Hans A. Bachor   +6 more
doaj   +2 more sources

Rapid wavefront shaping using an optical gradient acquisition [PDF]

Nature Communications
Wavefront shaping systems enable deep tissue imaging by correcting scattering aberrations, but estimating optimal modulation correction is challenging, since it depends on the unknown tissue structures.
Sagi Monin, Marina Alterman, Anat Levin
doaj   +2 more sources

Compact way to generate guide star for wavefront sensing in Bessel two-photon microscopy [PDF]

Scientific Reports
We introduce a compact method for generating guide stars to enable direct wavefront sensing in Bessel two-photon microscopy. By sequentially modulating an axicon phase and a thin lens phase using a spatial light modulator (SLM), our approach achieves ...
Fanglin Luo, Nan Li, Chengliang Yang, Zenghui Peng, Quanquan Mu, Xingyun Zhang   +5 more
doaj   +2 more sources

Filtered Influence Function of Deformable Mirror for Wavefront Correction in Laser Systems

Photonics, 2021
An influence function filtering method (IFFM) is presented to improve the wavefront correction capability in laser systems by curbing the correction performance degradation resulted from the IF measurement noise.
Yamin Zheng, Ming Lei, Shibing Lin, Deen Wang, Qiao Xue, Lei Huang   +5 more
doaj   +1 more source

Adaptive wavefront correction in two-photon microscopy using coherence-gated wavefront sensing [PDF]

Proceedings of the National Academy of Sciences, 2006
The image quality of a two-photon microscope is often degraded by wavefront aberrations induced by the specimen. We demonstrate here that resolution and signal size in two-photon microcopy can be substantially improved, even in living biological specimens, by adaptive wavefront correction based on sensing the wavefront of coherence-gated backscattered ...
Rückel, M., Mack-Bucher, J., Denk, W.
openaire   +8 more sources

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

Adaptive Optical Closed-Loop Control on the Basis of Hyperparametric Optimization of Convolutional Neural Networks

Applied Sciences, 2023
In adaptive optics systems, the precision wavefront sensor determines the closed-loop correction effect. The accuracy of the wavefront sensor is severely reduced when light energy is weak, while the real-time performance of wavefront sensorless adaptive ...
Bo Chen, Yilin Zhou, Jingjing Jia, Yirui Zhang, Zhaoyi Li   +4 more
doaj   +1 more source