Results 11 to 20 of about 154,766 (375)

An all-photonic focal-plane wavefront sensor [PDF]

open access: yesNature Communications, 2020
Adaptive optics wavefront sensors need to be in a pupil plane and are insensitive to certain wavefront-error modes. The authors present a wavefront sensor based on a photonic lantern fibre-mode-converter and deep learning, which can be placed at the same
Barnaby R. M. Norris   +4 more
doaj   +2 more sources

Roadmap on wavefront shaping and deep imaging in complex media [PDF]

open access: yesJournal of Physics: Photonics, 2021
The last decade has seen the development of a wide set of tools, such as wavefront shaping, computational or fundamental methods, that allow us to understand and control light propagation in a complex medium, such as biological tissues or multimode ...
S. Gigan   +44 more
semanticscholar   +1 more source

On the Ray-Wavefront Duality [PDF]

open access: yesSymmetry, 2022
We investigate the behavior of the solutions of the ray equation in isotropic media. We discuss local and global transversals and wavefronts and give examples of rays without wavefronts.
Antonio Díaz-Cano   +2 more
openaire   +3 more sources

NeuWS: Neural wavefront shaping for guidestar-free imaging through static and dynamic scattering media

open access: yesScience Advances, 2023
Diffraction-limited optical imaging through scattering media has the potential to transform many applications such as airborne and space-based imaging (through the atmosphere), bioimaging (through skin and human tissue), and fiber-based imaging (through ...
Brandon Yushan Feng   +6 more
semanticscholar   +1 more source

Accuracy characterization of Shack–Hartmann sensor with residual error removal in spherical wavefront calibration

open access: yesLight: Advanced Manufacturing, 2023
The widely used Shack –Hartmann wavefront sensor (SHWFS) is a wavefront measurement system. Its measurement accuracy is limited by the reference wavefront used for calibration and also by various residual errors of the sensor itself. In this study, based
Yi He   +5 more
semanticscholar   +1 more source

Multifunctional resonant wavefront-shaping meta-optics based on multilayer and multi-perturbation nonlocal metasurfaces [PDF]

open access: yesLight: Science & Applications, 2020
Photonic devices rarely provide both elaborate spatial control and sharp spectral control over an incoming wavefront. In optical metasurfaces, for example, the localized modes of individual meta-units govern the wavefront shape over a broad bandwidth ...
Stephanie C. Malek   +3 more
semanticscholar   +1 more source

On Machine Learning Approaches for Automated Log Management [PDF]

open access: yesJournal of Universal Computer Science, 2019
We address several problems in intelligent log management of distributed cloud computing applications and their machine learning solutions. Those problems concern various tasks on characterizing data center states from logs, as well as from related or ...
Ashot Harutyunyan   +4 more
doaj   +3 more sources

Calibrating a high-resolution wavefront corrector with a static focal-plane camera [PDF]

open access: yes, 2013
We present a method to calibrate a high-resolution wavefront-correcting device with a single, static camera, located in the focal plane; no moving of any component is needed.
Codona, Johanan   +5 more
core   +7 more sources

A review of dielectric optical metasurfaces for wavefront control [PDF]

open access: yesNanophotonics, 2018
During the past few years, metasurfaces have been used to demonstrate optical elements and systems with capabilities that surpass those of conventional diffractive optics.
Seyedeh Mahsa Kamali   +3 more
semanticscholar   +1 more source

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