Results 11 to 20 of about 55,652 (271)
Introduction to the Special Issue on Structured Light Coherence
Photonics, 2021 Statistical optics, and optical coherence in particular, developed into a stand-alone branch of physical optics in the second half of the 20th century and has found a number of ground-breaking applications in astronomical measurements, medical ...
Olga Korotkova, Franco Gori
doaj +1 more source
Speckle statistics of biological tissues in optical coherence tomography
Biomedical Optics Express, 2021 The speckle statistics of optical coherence tomography images of biological tissue have been studied using several historical probability density functions. Here, we propose a new theoretical framework based on power-law functions, where we hypothesize that an underlying power-law distribution governs scattering from tissues.
Gary R. Ge +2 more
openaire +3 more sources
Photonics, 2021 A new family of partially coherent pulsed beams with spatial cosine-Gaussian and temporal Laguerre–Gaussian correlations, named spatial cosine-Gaussian and temporal Laguerre–Gaussian correlated Schell-model (SCTLGSM) pulsed beams, is introduced.
Chaoliang Ding +4 more
doaj +1 more source
How to Statistically Model Coherent MPI in Optical Communications? [PDF]
Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF), 2018 The Beta distribution is used to model coherent MPI in optical communications and its fitness to describe experimental results is evaluated. It fits quite well to symmetric scenarios, but has some troubles when skewness matters.
Cancela, L. G., Pires, J. O.
openaire +3 more sources
At-wavelength characterization of X-ray wavefronts in Bragg diffraction from crystals
Journal of Synchrotron Radiation, 2023 The advent of next-generation synchrotron radiation sources and X-ray free-electron lasers calls for high-quality Bragg-diffraction crystal optics to preserve the X-ray beam coherence and wavefront.
Xianbo Shi +6 more
doaj +1 more source
Statistics of Optical Coherence Tomography Data From Human Retina [PDF]
IEEE Transactions on Medical Imaging, 2010 Optical coherence tomography (OCT) has recently become one of the primary methods for noninvasive probing of the human retina. The pseudoimage formed by OCT (the so-called B-scan) varies probabilistically across pixels due to complexities in the measurement technique.
Norberto M. Grzywacz +8 more
openaire +3 more sources
FOCUS: fast Monte Carlo approach to coherence of undulator sources
Journal of Synchrotron Radiation, 2023 FOCUS (Fast Monte CarlO approach to Coherence of Undulator Sources) is a new GPU-based simulation code to compute the transverse coherence of undulator radiation from ultra-relativistic electrons.
M. Siano +10 more
doaj +1 more source
Second-harmonic generation of temporally low-coherence light
APL Photonics, 2020 In this Letter, we study the second-harmonic (SH) generation of temporally low-coherence light using the statistical optics method. By introducing the statistical characteristics of low-coherence light into the nonlinear coupled wave equation, we predict
Xiaohui Zhao +11 more
doaj +1 more source
Results in Physics, 2023 In this paper, scattering medium with a semi-hard boundary is extended to the case of a quasi-homogeneous random medium for the first time. Applying the first-order Born approximation, far-field distribution of radially polarized partially coherent ...
Jiayi Wang, Zhirong Liu
doaj +1 more source
Modeling for Partially Spatially Coherent Vortex Beams
IEEE Photonics Journal, 2017 We propose a method for modeling a wide class of partially spatially coherent vortex beams. It is shown that any member of such beams can be represented as an incoherent superposition of fully coherent vortex models weighted by a non-negative weighting ...
Zhangrong Mei
doaj +1 more source