Results 21 to 30 of about 1,741,957 (288)

Enhancement of Partially Coherent Diffractive Images Using Generative Adversarial Network

open access: yesAI, 2022
We present a deep learning-based generative model for the enhancement of partially coherent diffractive images. In lensless coherent diffractive imaging, a highly coherent X-ray illumination is required to image an object at high resolution.
Jong Woo Kim   +2 more
doaj   +1 more source

Wigner transform approach to dynamic-variable partially coherent laser beam characterization [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2020
1) Background: the modeling, characterization, transformation and propagation of high-power CW laser beams in optical (including fiberoptic) trains and in the atmosphere have become hot topics in laser science and engineering in the past few years ...
J. Jabczyński, P. Gontar, Ł. Gorajek
doaj   +1 more source

Coherent-mode decomposition of partially polarized, partially coherent sources [PDF]

open access: yesJournal of the Optical Society of America A, 2003
It is shown that any partially polarized, partially coherent source can be expressed in terms of a suitable superposition of transverse coherent modes with orthogonal polarization states. Such modes are determined through the solution of a system of two coupled integral equations. An example, for which the modal decomposition is obtained in closed form
Piquero Sanz, Gemma María   +5 more
openaire   +5 more sources

Partial coherence versus entanglement [PDF]

open access: yes, 2023
We study partial coherence and its connections with entanglement. First, we provide a sufficient and necessary condition for bipartite pure state transformation under partial incoherent operations: A bipartite pure state can be transformed to another one
Wu, Junde   +4 more
core   +1 more source

Partially Coherent Cylindrical Vector Sources

open access: yesPhotonics, 2023
A new class of stationary electromagnetic sources radiating outward from the surface of an infinitely long cylinder is introduced via vectorial coherent mode representation.
Massimo Santarsiero   +5 more
doaj   +1 more source

EEG effective connectivity networks for an attentive task requiring vigilance based on dynamic partial directed coherence [PDF]

open access: yesJournal of Integrative Neuroscience, 2020
An effective network perspective focused on measuring directional interactions of electroencephalographic in different cortical regions during a sustained attentive task requiring vigilance.
Songyun Xie, Yabing Li
doaj   +1 more source

Computation of Hopkins’ 3-circle integrals using Zernike expansions [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2011
The integrals occurring in optical diffraction theory under conditions of partial coherence have the form of an incomplete autocorrelation integral of the pupil function of the optical system.
Janssen A. J. E. M.
doaj   +1 more source

Diffractive shaping of excimer-laser beams for pulsed laser deposition [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2011
We present a beam-shaping system for a pulsed laser deposition setup. This system is based on two diffractive beam-splitter gratings and is able to produce 2 × 2 mm2 flat-top distributions of UV light with a fluence of 3 J/cm2 on the target some 30 cm ...
Kekkonen V., Hakola A., Kajava T.
doaj   +1 more source

Eigenvalue calibration methods for polarimetry [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
Complex polarisation sensitive systems such as imaging Mueller matrix polarimeters are commonly calibrated using the eigenvalue calibration method. In this paper we present an extensive review of the method and an existing variant.
Macías-Romero C., Török P.
doaj   +1 more source

Coherence and Partial Coherence in Interacting Electron Systems [PDF]

open access: yesPhysical Review Letters, 2001
Physical Review ...
König, Jürgen, Gefen, Yuval
openaire   +3 more sources

Home - About - Disclaimer - Privacy