Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

518
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
518
The Principle of Superposition and the Gravitational Field01:17

The Principle of Superposition and the Gravitational Field

1.7K
The principle of superposition applies to gravitational forces of objects that are sufficiently far apart. It states that the net gravitational force on a point object is the vector sum of the gravitational forces on it due to various objects. The principle helps calculate the force by listing the individual forces and then vectorially summing them up. However, it should be noted that the principle of superposition is not always apparent. In the presence of a second force, the first force could...
1.7K
Electric Field01:16

Electric Field

11.6K
Consider two point charges, each exerting Coulomb force on the other. It is possible to describe the Coulomb interaction via an intermediate step by defining a new physical quantity called the electric field.
In the new picture, imagine that the first charge sets up an electric field independent of all other charges in the universe. When another charge comes in its vicinity, the second charge experiences an electric force depending on the electric field at that point. The source charge does not...
11.6K
Electric Field of Two Equal and Opposite Charges01:30

Electric Field of Two Equal and Opposite Charges

6.5K
Atoms generally contain the same number of positively and negatively charged particles, protons, and electrons. Hence, they are electrically neutral. However, the centers of the positive and negative charges do not always coincide. In such a scenario, the electric field of an atom may not be zero.
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
6.5K
Electric Field of a Non Uniformly Charged Sphere01:22

Electric Field of a Non Uniformly Charged Sphere

1.8K
Gauss's law states that the electric flux through any closed surface equals the net charge enclosed within the surface. This law is beneficial for determining the expressions for the electric field for a particular charge distribution if the electric flux is known.
Consider a non-uniformly charged sphere, for which the density of charge depends only on the distance from a point in space and not on the direction. Such a sphere has a spherically symmetrical charge distribution. Here, the electric...
1.8K
Gauss's Law: Spherical Symmetry01:26

Gauss's Law: Spherical Symmetry

8.2K
A charge distribution has spherical symmetry if the density of charge depends only on the distance from a point in space and not on the direction. In other words, if the system is rotated, it doesn't look different. For instance, if a sphere of radius R is uniformly charged with charge density ρ0, then the distribution has spherical symmetry. On the other hand, if a sphere of radius R is charged so that the top half of the sphere has a uniform charge density ρ1 and the bottom half...
8.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Electromagnetic generalized Schell-model vortex beams.

Optics express·2025
Same author

Fourier hybrid circular Airy vortex beam.

Journal of the Optical Society of America. A, Optics, image science, and vision·2025
Same author

Convolutional-neural-network-assisted parameter identification in elliptical Airy vortex beams.

Journal of the Optical Society of America. A, Optics, image science, and vision·2025
Same author

Dual-Laguerre Gaussian pseudo-Schell model beams.

Optics express·2025
Same author

Electromagnetic multi-sinc Schell-model beams and their statistical characteristics.

Optics express·2025
Same author

Difference of two sinc Schell-model cross-spectral density matrices.

Optics express·2025

Related Experiment Video

Updated: Oct 17, 2025

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
06:16

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

7.7K

Special correlation model sources producing a self-focusing field.

Zhangrong Mei

    Optics Express
    |October 7, 2021
    PubMed
    Summary
    This summary is machine-generated.

    This study explores non-Schell-model sources to create unique self-focusing optical fields. Different source modulations yield distinct spatial coherence properties, enabling novel optical field generation.

    More Related Videos

    Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture
    09:04

    Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture

    Published on: February 23, 2018

    9.7K
    Confocal Microscopy Reveals Cell Surface Receptor Aggregation Through Image Correlation Spectroscopy
    06:51

    Confocal Microscopy Reveals Cell Surface Receptor Aggregation Through Image Correlation Spectroscopy

    Published on: August 2, 2018

    7.3K

    Related Experiment Videos

    Last Updated: Oct 17, 2025

    Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
    06:16

    Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

    Published on: April 25, 2019

    7.7K
    Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture
    09:04

    Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture

    Published on: February 23, 2018

    9.7K
    Confocal Microscopy Reveals Cell Surface Receptor Aggregation Through Image Correlation Spectroscopy
    06:51

    Confocal Microscopy Reveals Cell Surface Receptor Aggregation Through Image Correlation Spectroscopy

    Published on: August 2, 2018

    7.3K

    Area of Science:

    • Optics and Photonics
    • Mathematical Physics

    Background:

    • Partially coherent light sources are crucial for various optical applications.
    • Schell-model sources offer a simplified approach to modeling coherence.
    • Understanding non-Schell-model sources is essential for advanced optical field control.

    Purpose of the Study:

    • To investigate the spatial coherence properties of non-Schell-model sources.
    • To explore the generation of self-focusing optical fields from these sources.
    • To propose a method for modeling new classes of partially coherent optical fields.

    Main Methods:

    • Analysis of spectral coherence based on special function values.
    • Modulation of non-Schell-model sources using various functions.
    • Characterization of the resulting self-focusing optical fields.

    Main Results:

    • Demonstrated dependence of spatial coherence on source function differences.
    • Observed distinct self-focusing characteristics for different modulations.
    • Established a link between source properties and generated field behavior.

    Conclusions:

    • Non-Schell-model sources offer versatile control over optical field properties.
    • The proposed method facilitates the design of novel partially coherent self-focusing beams.
    • This research expands the toolkit for generating tailored optical fields.