Results 11 to 20 of about 101,571 (211)

Measurement of the radius of curvature of a spherical surface based on the transport-of-intensity equation

Компьютерная оптика, 2022
The transport-of-intensity equation provides a new non-interferometric and non-iterative access to quantitative information about the phase of a light wave by measuring intensity distributions. This equation can be used to implement a simple and accurate
N.G. Stsepuro, M.S. Kovalev, G.K. Krasin, I.V. Gritsenko, A.V. Bobkov, S.I. Kudryashov   +5 more
doaj   +1 more source

Drift phase resolved diffusive radiation belt model: 2. implementation in a case of random electric potential fluctuations

Frontiers in Astronomy and Space Sciences, 2023
In the first part of this work, we highlighted a drift-diffusion equation capable of resolving the magnetic local time dimension when describing the effects of trapped particle transport on radiation belt intensity.
Solène Lejosne, Jay M. Albert, Samuel D. Walton   +2 more
doaj   +1 more source

Drift phase resolved diffusive radiation belt model: 1. Theoretical framework

Frontiers in Astronomy and Space Sciences, 2023
Most physics-based models provide a coarse three-dimensional representation of radiation belt dynamics at low time resolution, of the order of a few drift periods. The description of the effect of trapped particle transport on radiation belt intensity is
Solène Lejosne, Jay M. Albert
doaj   +1 more source

Active single-pixel microscopy for quantitative phase imaging [PDF]

EPJ Web of Conferences
In this work, a motionless method to achieve quantitative phase imaging in single-pixel microscopy based on the transport of intensity equation is presented.
Zapata-Valencia Samuel I., Tobon-Maya Heberley, Lancis Jesus, Tajahuerce Enrique   +3 more
doaj   +1 more source

Simulated LCSLM with Inducible Diffractive Theory to Display Super-Gaussian Arrays Applying the Transport-of-Intensity Equation

Photonics, 2022
We simulate a liquid crystal spatial light modulator (LCSLM), previously validated by Fraunhofer diffraction to observe super-Gaussian periodic profiles and analyze the wavefront of optical surfaces applying the transport-of-intensity equation (TIE). The
Jesus Arriaga-Hernandez, Bolivia Cuevas-Otahola, Jacobo Oliveros-Oliveros, María Morín-Castillo, Ygnacio Martínez-Laguna, Lilia Cedillo-Ramírez   +5 more
doaj   +1 more source

Higher Order Transport of Intensity Equation Methods: Comparisons and Their Hybrid Application for Noise Adaptive Phase Imaging

IEEE Photonics Journal, 2019
As a non-interferometric method, the transport of intensity equation (TIE) method suits for quantitative phase imaging with the commercial microscope platform, especially those higher order TIE approaches which can realize precise phase retrieval by ...
Junbao Hu, Qi Wei, Yan Kong, Zhilong Jiang, Liang Xue, Fei Liu, Dug Young Kim, Cheng Liu, Shouyu Wang   +8 more
doaj   +1 more source

The effect of strong nonlinearity on wave-induced vertical mixing [PDF]

Earth System Dynamics, 2023
A semi-analytical solution to an advection–diffusion equation is coupled with a nonlinear wavemaker model to investigate the effect of strong nonlinearity on wave-induced mixing.
M. Paprota, W. Sulisz
doaj   +1 more source

Optical dispersions through intracellular inhomogeneities

Physical Review Research, 2023
The transport of intensity equation (TIE) exhibits a noninterferometric correlation between the intensity and phase variations of intermediate fields (e.g., light and electrons) in biological imaging. Previous TIE formulations have generally assumed free-
Masaki Watabe, Yasuhiro Hirano, Atsuko Iwane, Osamu Matoba, Koichi Takahashi   +4 more
doaj   +1 more source

EFFECT OF INTENSE MAGNETIC FIELDS ON THE TRAJECTORY OF ELECTRONSPROPAGATING IN LOW DENSITY MEDIA OF INTEREST FOR MRI-LINAC RADIOTHERAPY

Anales (Asociación Física Argentina), 2023
Ionizing radiation transport mechanisms in presence of magnetic fields can be described in terms of formalisms based on the Boltzmann radiation transport equation. However, when the transport occurs not in vacuum but in scattering media the difficulty of
A. Gayol, M. Valente
doaj   +1 more source

Quantitative Phase Imaging Camera With a Weak Diffuser

Frontiers in Physics, 2019
We introduce the quantitative phase imaging camera with a weak diffuser (QPICWD) as an effective scheme of quantitative phase imaging (QPI) based on normal microscope platforms.
Linpeng Lu, Linpeng Lu, Linpeng Lu, Jiasong Sun, Jiasong Sun, Jiasong Sun, Jialin Zhang, Jialin Zhang, Jialin Zhang, Yao Fan, Yao Fan, Yao Fan, Qian Chen, Qian Chen, Chao Zuo, Chao Zuo, Chao Zuo   +16 more
doaj   +1 more source