Results 21 to 30 of about 939,663 (300)

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

open access: yesFrontiers 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

Multimodal computational microscopy based on transport of intensity equation [PDF]

open access: yesJournal of Biomedical Optics, 2016
Transport of intensity equation (TIE) is a powerful tool for phase retrieval and quantitative phase imaging, which requires intensity measurements only at axially closely spaced planes without a separate reference beam. It does not require coherent illumination and works well on conventional bright-field microscopes.
Jiaji, Li   +4 more
openaire   +2 more sources

Multiplexed superresolution phase microscopy with transport of intensity equation

open access: yesOptics and Lasers in Engineering, 2023
Martin Sanz, Vicente Mico
exaly   +2 more sources

Experimental evaluation of spatial resolution in phase maps retrieved by transport of intensity equation [PDF]

open access: yes, 2015
The transport of intensity equation (TIE) is a convenient method of obtaining a potential distribution, as it requires only three transmission electron microscopy images with different amounts of defocus.
Oshima, Yoshifumi, Zhang, Xiaobin
core   +1 more source

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

open access: yesEPJ 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.   +3 more
doaj   +1 more source

Practical procedure for retrieval of quantitative phase map for two-phase interface using the transport of intensity equation [PDF]

open access: yes, 2015
A practical procedure for retrieving quantitative phase distribution at the interface between a thin amorphous germanium (a-Ge) film and vacuum based on the transport of intensity equation is proposed.
Oshima, Yoshifumi   +3 more
core   +1 more source

Advances in Phase Retrieval by Transport of Intensity Equation

open access: yesProceedings of the 7th International Conference on Photonics, Optics and Laser Technology, 2019
There are many factors in the calculations of Transport of Intensity Equation, which may lead to the uncertainty of the retrieved phase. In this paper, effect of these parameters such as defocus distance, focus plane and magnification, on the results is studied. It is hoped that this would provide a more robust and reliable method for phase and optical
Dingfu Chen   +5 more
openaire   +1 more source

Laplace-transform-based method to calculate back-reflected radiance from an isotropically scattering half-space [PDF]

open access: yes, 1997
We present a method to determine the back-reflected radiance from an isotropically scattering half-space with matched boundary. This method has the advantage that it leads very quickly to the relevant equations, the numerical solution of which is also ...
Rinzema, K.,   +5 more
core   +1 more source

Optical testing using the transport-of-intensity equation

open access: yesOptics Express, 2007
The transport-of-intensity equation links the intensity and phase of an optical source to the longitudinal variation of its intensity in the presence of Fresnel diffraction. This equation can be used to provide a simple, accurate spatial-phase measurement for optical testing of flat surfaces. The properties of this approach are derived.
C, Dorrer, J D, Zuegel
openaire   +2 more sources

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

open access: yesPhotonics, 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   +5 more
doaj   +1 more source

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