Results 81 to 90 of about 5,922 (213)

Fast eikonal phase retrieval for high‐throughput beamlines

Journal of Synchrotron Radiation, EarlyView.
Fast eikonal phase retrieval with complementary local (sub‐pixel) and non‐local (multi‐pixel) solvers strongly suppresses nonlinear streak artefacts in long‐distance propagation‐based phase‐contrast micro‐tomography at high computational efficiency.A fast eikonal phase retrieval formulation is introduced that accelerates eikonal phase retrieval by more
Alessandro Mirone, Theresa Urban, Joseph Brunet, Claire L. Walsh, Peter D. Lee, Paul Tafforeau   +5 more
wiley   +1 more source

Deformable Membrane Mirror for Wavefront Correction

Defence Science Journal, 2009
Deformable or adaptive mirrors are used in modern adaptive optics systems for direct correction of the aberrations in the light wavefront. Conventional deformable mirrors used for this purpose are expensive electromechanical devices. Deformable membrane mirror fabricated using microelectromechanical systems (MEMS) technology is a low cost, compact ...
Amita Gupta, Shailesh Kumar, Ranvir Singh, Monika Chaudhary, A. Meena, V. Sarvanan   +5 more
openaire   +1 more source

High‐flux, moderate‐bandwidth, high‐energy X‐rays from lapped Si(111) crystals in a double‐crystal monochromator

Journal of Synchrotron Radiation, EarlyView.
Lapped Si(111) crystals in a double‐crystal monochromator provide high‐flux, spectrally pure, and moderate‐bandwidth X‐ray beams at 100 keV, offering a robust and cost‐effective alternative to perfect‐crystal and multilayer optics.Lapping the surfaces of Si(111) crystals in a double‐crystal monochromator significantly increases the intensity of high ...
Hiroshi Yamazaki, Kazuhiko Tahara, Yasuhiro Shimizu, Haruhiko Ohashi   +3 more
wiley   +1 more source

Fluorescent‐target imaging and real‐time beam diagnostics at the High Energy Photon Source

Journal of Synchrotron Radiation, EarlyView.
A fluorescent‐target imaging and real‐time beam diagnostic platform has been developed for the High Energy Photon Source (HEPS), integrating synchronized multi‐camera acquisition within the Experimental Physics and Industrial Control System (EPICS) areaDetector framework, online beam‐parameter extraction, and Mamba Data Worker enabled data management ...
Qun Zhang, Yao Zhao, Yu Liu, Zhanxin Gu, Sai Liu, Qihui Duan, Gang Li, Yi Zhang, Chenglong Zhang   +8 more
wiley   +1 more source

WFSuite: a Python software suite for X‐ray wavefront sensing and at‐wavelength metrology

Journal of Synchrotron Radiation, EarlyView.
WFSuite is an open‐source Python suite for speckle‐based X‐ray wavefront reconstruction, offering both relative metrology and absolute phase modules. It streamlines wavefront characterization and feedback control for synchrotron and XFEL applications.WFSuite is a Python‐based software suite for X‐ray wavefront sensing and at‐wavelength metrology for ...
Xianbo Shi, Luca Rebuffi, Zhi Qiao, Yu-Chung Lin, Lahsen Assoufid   +4 more
wiley   +1 more source

Towards enhanced resolution in reflection-mode light scattering microscopy

JPhys Photonics
Optical microscopy faces challenges in resolution and depth due to light scattering in biological tissues. Conventional transmission-mode light scattering microscopy is typically constrained by a single-pass wavefront correction, incapable of ...
Tong Peng, Runze Li, Chen Bai, Tengfei Wu, Meiling Zhou, Yanlong Yang, Ping Wang, Dan Dan, Baoli Yao   +8 more
doaj   +1 more source

Diffractive wavefront correction for Fe L‐edge spectroscopy on the meV scale

Journal of Synchrotron Radiation, EarlyView.
We propose an aberration‐corrected, wavelength‐dispersive instrument for soft X‐ray spectroscopy at an energy‐resolving power of (5–6) × 104, designed for, for example, resonant inelastic X‐ray scattering at synchrotron beamlines or X‐ray free‐electron lasers.We propose a wavelength‐dispersive instrument for high‐resolution soft X‐ray spectroscopy at ...
Christoph Braig, Andrey Sokolov, Frank Siewert, Christian Seifert   +3 more
wiley   +1 more source

Corneal power modelling with OCT data – Thin and thick lens paraxial models versus raytracing

Acta Ophthalmologica, EarlyView.
Abstract Background Evaluating keratometric power with Zeiss index (PKZ), paraxial thick cornea power (Gullstrand [PG]) and power referenced to the front (PFV) and back vertex plane (PBV) and raytracing power (PR), and modelling the deviation from PKZ with a multivariable linear prediction model.
Achim Langenbucher, Nóra Szentmáry, Alan Cayless, Peter Hoffmann, Jascha Wendelstein   +4 more
wiley   +1 more source

Patient‐reported outcomes and visual function after four refractive strategies in cataract surgery: A randomized controlled trial

Acta Ophthalmologica, EarlyView.
Abstract Purpose To evaluate patient‐reported outcome measures (PROMs) and visual function across four groups of public cataract patients: emmetropia, mini‐monovision, monovision with partial‐range of field (RoF) narrow intraocular lenses (IOLs) and patients implanted with partial‐RoF extended IOLs.
Anne Guldhammer Skov, Morten la Cour, Birgitte Moldow, Lars Holm, Therese Krarup   +4 more
wiley   +1 more source

Research Progress of Deformable Mirror and Its Control Algorithm

Guangtongxin yanjiu
【Objective】Deformable Mirror(DM) is a key device in adaptive optics system for wavefront correction, and its performance directly determines the wavefront correction capability of the system.
LIANG Jingyuan, WANG Hairong, ZHANG Na, ZHANG Xiaodan, ZHAO Li, WANG Huiqing, WANG Yi, KE Xizheng   +7 more
doaj