Results 31 to 40 of about 1,417 (115)

Statistical properties of spontaneous synchrotron radiation with arbitrary degree of coherence

Physical Review Accelerators and Beams, 2020
In a storage ring, turn-to-turn fluctuations in the intensity of spontaneous synchrotron radiation occur due to two mechanisms. The first mechanism is the quantum uncertainty in the number of emitted photons.
Ihar Lobach, Valeri Lebedev, Sergei Nagaitsev, Aleksandr Romanov, Giulio Stancari, Alexander Valishev, Aliaksei Halavanau, Zhirong Huang, Kwang-Je Kim   +8 more
doaj   +1 more source

Self-Focusing Property of Partially Coherent Beam With Non-Uniform Correlation Structure in Non-Linear Media

Frontiers in Physics, 2022
Coherence in a light beam has the potential to serve as a degree of freedom for manipulating the beam. In this work, the self-focusing property of a partially coherent beam with a non-uniform correlation structure propagating in a non-linear medium is ...
Lu Lu, Zhiqiang Wang, Zhiqiang Wang, Jiayi Yu, Chunhong Qiao, Rong Lin, Rong Lin, Yangjian Cai, Yangjian Cai   +8 more
doaj   +1 more source

Second-Order Statistics of Partially Coherent Beams with Laguerre Non-Uniform Coherence Properties under Turbulence

Photonics, 2023
We use the extended Huygens–Fresnel integral to analyze the propagation properties of a class of partially coherent beams with Laguerre non-uniform coherence properties (called Laguerre non-uniformly correlated beams) in free space and in a turbulent ...
Yang Zhao, Zhiwen Yan, Yibo Wang, Liming Liu, Xinlei Zhu, Bohan Guo, Jiayi Yu   +6 more
doaj   +1 more source

Polarization and coherence for vectorial electromagnetic waves and the ray picture of light propagation [PDF]

Journal of the European Optical Society-Rapid Publications, 2007
We develop a complete geometrical picture of paraxial light propagation including coherence phenomena. This approach applies both for scalar and vectorial waves via the introduction of a suitable Wigner function and can be formulated in terms of an ...
Luis Alfredo
doaj   +1 more source

Features of Rhetorical Organization in L2 Argumentative Essays by Chinese EFL Students at the Tertiary Level [PDF]

International Journal of TESOL Studies, 2020
The current study employed The KEYHOLE Model (Baker, 1984) to analyze features of rhetorical organizations of 88 English argumentative essays written by Chinese university EFL students.
Qi Fang, Lu Yu, Jiang Cheng
doaj   +1 more source

Coherence in hybrid texts: The case of the Patient Information Leaflet genre

Hermes, 2019
This article investigates the degree of coherence in a particular type of hybrid text, viz. the Patient Information Leaflet, which is a lay-oriented genre fusing original and derived textual elements.
Aage Hill-Madsen
doaj   +1 more source

Disruption of EEG resting state functional connectivity in patients with focal epilepsy

The Egyptian Journal of Neurology, Psychiatry and Neurosurgery, 2023
Background Epilepsy is a network disease and EEG could be used to evaluate dynamic inter-regional connectivity. The aim of the current study is to explore disruption of resting state EEG functional connectivity in focal epilepsy using coherence and phase
Mostafa M. Elkholy
doaj   +1 more source

Numerical Study of Non-Schell Model Pulses in Nonlinear Dispersive Media with the Monte Carlo-Based Pseudo-Mode Superposition Method

Photonics
Recently, we introduced random complex and phase screen methods as powerful tools for numerically investigating the evolution of partially coherent pulses (PCPs) in nonlinear dispersive media.
Pujuan Ma, Yi Zhang, Yanlin Bai, Yangjian Cai, Jingsong Liu   +4 more
doaj   +1 more source

Degree of coherence

Physica, 1958
A new simple definition of the degree of coherence is proposed from which a previously proved theorem, also used as a definition, can easily be derived.
openaire   +2 more sources

SAR Coherence Estimation by Composition of Subsample Estimates and Machine Learning

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Synthetic aperture radar (SAR) coherence magnitude is an essential parameter in SAR interferometry. This is the reason why current interferometric wide area ground motion services require the estimation of the coherence magnitude as accurately and ...
Nico Adam
doaj   +1 more source