Results 161 to 170 of about 728 (215)

The diagnostics and laser infrastructure at the Soft X‐ray Port of the European XFEL

Journal of Synchrotron Radiation, Volume 33, Issue 5, Page 1531-1541, September 2026.
The diagnostics and laser infrastructure of the Soft X‐ray Port (SXP) at the European X‐ray Free Electron Laser are presented.The diagnostics and laser infrastructure of the Soft X‐ray Port (SXP) at the European X‐ray Free Electron Laser are presented.
Patrik Grychtol, Vahagn Vardanyan, Pranav Bhardwaj, Michael Heber, David Doblas-Jimenez, Ekaterina Tikhodeeva, Serguei Molodtsov, Manuel Izquierdo   +7 more
wiley   +1 more source

Wavefront sensing at a high‐repetition‐rate X‐ray free‐electron laser

Journal of Synchrotron Radiation, Volume 33, Issue 5, Page 1255-1268, September 2026.
We demonstrate a fast, robust and sensor‐free approach to X‐ray speckle tracking that enables shot‐to‐shot wavefront characterization at high‐repetition‐rate X‐ray free‐electron lasers. Our measurements reveal a hierarchy of wavefront fluctuations indicative of instabilities in the accelerator and beamline optics at the European XFEL.Wavefront ...
Trey Guest, Patrik Vagovič, Luigi Adriano, Johan Bielecki, Sarlota Birnsteinova, Rita Graceffa, Jayanath Koliyadu, Kaye Morgan, Hiiro Moriyama, Daniel Mosko, Grant van Riessen, Kristian Sabol, Tokushi Sato, Peter Szeles, Zane Taylor, Jozef Uličný, Richard Bean, Adrian P. Mancuso, Brian Abbey   +18 more
wiley   +1 more source

Ultrafast time‐resolved X‐ray absorption spectroscopy at FemtoMAX beamline

Journal of Synchrotron Radiation, Volume 33, Issue 5, Page 1428-1439, September 2026.
A new setup for femtosecond resolution X‐ray absorption spectroscopy with energy ranging from 2 to 15 keV is established.We report on the development and first experiments at a new X‐ray absorption spectroscopy (XAS) endstation at the FemtoMAX beamline of the MAX IV Laboratory.
Van-Thai Pham, Katharina Kubicek, Ahn Byungnam, Carl Ekström, David Kroon, Zhangatay Nurekeyev, Mohammed Sekkal, Axl Eriksson, Hyein Hwang, Anna Zymaková, Thanh Binh Nguyen, Minh-Huong Ha-Thi, Xuan Thang Vu, Yohei Uemura, Jörgen Larsson, Christian Bressler, Jens Uhlig   +16 more
wiley   +1 more source

One million scans later: the evolution of the I16 material and magnetism beamline at Diamond Light Source

Journal of Synchrotron Radiation, Volume 33, Issue 5, Page 1575-1588, September 2026.
Beamline I16 at Diamond Light Source is a versatile X‐ray scattering instrument that combines tunable X‐ray energy and polarization, flexible diffraction geometries, and advanced sample environments for studies of electronic, magnetic, and structural phenomena.Here, we review the capabilities of beamline I16 at Diamond Light Source after nearly 20 ...
Aly H. Abdeldaim, Rebecca Scatena, James Hawkins, Gareth Nisbet, Daniel G. Porter, Graeme Barlow, Andy Marshall, Brian Nutter, Guillaume Beutier, Stephen P. Collins, Alessandro Bombardi   +10 more
wiley   +1 more source

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Wavefront Aberration Function

Journal of Modern Optics, 1992
Abstract In this paper we obtain equations for the two aperture second derivatives of the wavefront aberration function in terms of the position of the local sagittal and tangential foci. The derivatives presented here are valid for meridional rays.
Silvia A. Comastri, J.M. Simon
openaire   +1 more source

Wavefront aberrations and accommodation in myopes and hyperopes

Vestnik oftal'mologii, 2017
to comparatively investigate accommodation, pseudoaccommodation, and higher-order aberrations in children and young adults with myopia and hyperopia.A total of 39 myopic (the mean error of (-)5.2±1.5 diopters) and 53 hyperopic (the mean error of (+)3.1±1.15 diopters) eyes of 46 patients aged 5-20 years (11.6±0.6 years on average) were enrolled ...
V V, Neroev, E P, Tarutta, S G, Arutyunyan, A T, Khandzhyan, N V, Khodzhabekyan   +4 more
openaire   +4 more sources

Wavefront Aberration of the Eye

Optometry and Vision Science, 1991
ABSTRACT The concept of monochromatic wavefront aberration is discussed in relation to ray aberration, and methods for its measurement in the case of the eye are described. Examples are given of the measured aberration in individual eyes: in general the aberration falls within the Rayleigh quarter‐wavelength criterion for pupil ...
openaire   +2 more sources

A Scanning Interferometer for Wavefront Aberration Measurements

Applied Optics, 1969
The fundamental Principles of Operation and of the design of a new type of lateral shearing interferometer are described. This instrument has the advantage over existing devices that no computation is required in order to derive the wavefront shape from the interferogram.
A, Ashton, A C, Marchant
openaire   +2 more sources

Influence of eyelid position on wavefront aberrations

Ophthalmic and Physiological Optics, 2007
Abstract Purpose:  To investigate the influence of eyelid position on wavefront aberrations. Methods:  In study 1, the right eyes of 43 non‐cyclopleged subjects were evaluated using the Complete Ophthalmic Analysis ...
Wei, Han, William, Kwan, Jing, Wang, Shea Ping, Yip, Maurice, Yap   +4 more
openaire   +2 more sources

Wavefront aberrations in eyes with decentered ablations

Journal of Cataract and Refractive Surgery, 2009
To compare the refractive and functional outcomes and wavefront profiles in eyes with decentered ablations and eyes with well-centered ablations.Medical Research Foundation, Chennai, Tamil Nadu, India.This retrospective analysis comprised eyes with topographically diagnosed decentered ablations after laser in situ keratomileusis (LASIK).
Prema, Padmanabhan, Michael, Mrochen, Deepa, Viswanathan, Subam, Basuthkar   +3 more
openaire   +2 more sources