Results 61 to 70 of about 93,269 (175)

Computational near-field and far-field parameter measurement of high-power lasers using modified coherent modulation imaging

High Power Laser Science and Engineering
Accurate characterization of high-power laser parameters, especially the near-field and far-field distributions, is crucial for inertial confinement fusion experiments.
Hua Tao, Xiaoliang He, Chengcheng Chang, Liqing Wu, Deng Liu, Fei Chen, Cheng Liu, Jianqiang Zhu   +7 more
doaj   +1 more source

Collaborative development of diffraction-limited beamline optical systems at US DOE light sources [PDF]

, 2019
An ongoing collaboration among four US Department of Energy (DOE) National Laboratories has demonstrated key technology prototypes and software modeling tools required for new high-coherent flux beamline optical systems. New free electron laser (FEL) and
Assoufid, L, Bryant, D, Chao, W, Cocco, D, Goldberg, KA, Grizolli, W, Hardin, C, Huang, L, Idir, M, Kearney, SP, Lee, L, Morton, D, Ng, ML, Shi, X, Shu, D, Shvyd'Ko, Y, Wojcik, M, Wojdyla, A   +17 more
core  

Transmission wavefront shearing interferometry for photoelastic materials [PDF]

, 2009
A general analysis and experimental validation of transmission wavefront shearing interferometry for photoelastic materials are presented. These interferometers applied to optically isotropic materials produce a single interference pattern related to one
Bhattacharya, Kaushik, Kramer, Sharlotte L. B., Ravichandran, Guruswami   +2 more
core   +1 more source

An all-photonic focal-plane wavefront sensor

Nature 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, Jin Wei, Christopher H. Betters, Alison Wong, Sergio G. Leon-Saval   +4 more
doaj   +1 more source

Detection of phase singularities with a Shack-Hartmann wavefront sensor

, 2006
While adaptive optical systems are able to remove moderate wavefront distortions in scintillated optical beams, phase singularities that appear in strongly scintillated beams can severely degrade the performance of such an adaptive optical system ...
Aksenov, Arrasmith, Barchers, Coullet, Filippus S. Roux, Fried, Fried, Hattori, Herrmann, Herrmann, Hudgin, Jan C. Olivier, Mingzhou Chen, Nye, Roggemann, Roux, Southwell, Talmi, Tyler, van Dam   +19 more
core   +1 more source

A smooth introduction to the wavefront set

, 2014
The wavefront set provides a precise description of the singularities of a distribution. Because of its ability to control the product of distributions, the wavefront set was a key element of recent progress in renormalized quantum field theory in curved
Alinhac S, Bogoliubov N N, Bogoliubov N N, Bogoliubov N N, Brouder C, Brunetti R, Cappiello M, Chazarain J, Christian Brouder, Dang N V, Duistermaat J J, Epstein H, Eskin G, Fewster C J, Folland G B, Folland G B, Friedlander F G, Frédéric Hélein, Gelʼfand I M, Grohs P ed Kutyniok G, Harris B, Hollands S, Hörmander L, Hörmander L, Itzykson C, Ivrii V J, Liess O, Maksimović S, Nguyen Viet Dang, Oberguggenberger M, Oberguggenberger M, Peskin M E, Reed M, Rivier D, Schwartz L, Stueckelberg E C G, Stueckelberg E C G, Stueckelberg E C G, Taylor M E, Wagschal C, Zhang H H   +40 more
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Wavefront sets in algebraic quantum field theory

, 1998
The investigation of wavefront sets of n-point distributions in quantum field theory has recently acquired some attention stimulated by results obtained with the help of concepts from microlocal analysis in quantum field theory in curved spacetime.
Verch, Rainer
core   +2 more sources

Parallelising wavefront applications on general-purpose GPU devices [PDF]

, 2010
Pipelined wavefront applications form a large portion of the high performance scientific computing workloads at supercomputing centres. This paper investigates the viability of graphics processing units (GPUs) for the acceleration of these codes, using ...
Hammond, Simon D., Jarvis, Stephen A., Mudalige, Gihan R., Pennycook, Simon J.   +3 more
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Repeatability and Interchangeability of Topometric, Anterior Chamber and Corneal Wavefront Data Between Two Scheimpflug Camera Devices

Clinical Ophthalmology, 2020
Hesham Mohamed Gharieb,1,2 Hisham Samy Shalaby,3 Ihab Saad Othman4,5 1Faculty of Medicine, Ain Shams University, Cairo, Egypt; 2Research and Development, Eye World Hospital, Giza, Egypt; 3Department of Ophthalmology, Faculty of Medicine, Ain Shams ...
Gharieb HM, Shalaby HS, Othman IS
doaj  

Spatio-temporal modelling of wave formation in an excitable chemical medium based on a revised FitzHugh-Nagumo model [PDF]

, 2010
The wavefront profile and the propagation velocity of waves in an experimentally observed Belousov-Zhabotinskii reaction are analyzed and a revised FitzHumgh-Nagumo(FHN) model of these systems is identified.
Billings, S.A., Coca, D., DeMatos, L., Guo, Y., Ristic, R.I, Zhao, Y.   +5 more
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