Results 41 to 50 of about 72,451 (334)

Compact representations of partially coherent undulator radiation suitable for wave propagation

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2015
Undulator radiation is partially coherent in the transverse plane, with the degree of coherence depending on the ratio of the electron beam phase space area (emittance) to the characteristic radiation wavelength λ. On the other hand, numerical codes used
Ryan R. Lindberg, Kwang-Je Kim
doaj   +1 more source

Partially coherent fractional vortex beam

open access: yesOptics Express, 2018
We introduce a new kind of partially coherent vortex (PCV) beam with fractional topological charge named partially coherent fractional vortex (PCFV) beam and derive the propagation formula for such beam passing through a stigmatic ABCD optical system with the help of the convolution method.
Jun Zeng   +4 more
openaire   +2 more sources

Four-dimensional experimental characterization of partially coherent light using incoherent modal decomposition

open access: yesNanophotonics, 2023
The intensity distributions and statistics of partially coherent light fields with random fluctuations have proven to be more robust than for coherent light.
Lu Xingyuan   +4 more
doaj   +1 more source

Correlation-induced self-focusing and self-shaping effect of a partially coherent beam

open access: yesHigh Power Laser Science and Engineering, 2016
A new specially correlated partially coherent beam named nonuniform multi-Gaussian correlated (NMGC) partially coherent beam is introduced. The correlation functions of such beam in $x$ and $y$ directions are different from each other, i.e., nonuniform ...
Yahong Chen, Y. Cai
semanticscholar   +1 more source

Characteristics of Partially Coherent Circular Flattened Gaussian Vortex Beams in Turbulent Biological Tissues

open access: yesApplied Sciences, 2019
The characteristics of partially coherent circular flattened Gaussian vortex beams in turbulent biological tissues are investigated, and the analytical formula for the cross-spectral density of this beam is derived.
Yongzhou Ni   +3 more
doaj   +1 more source

Partially Coherent Vortex Beams of Arbitrary Order

open access: yesFrontiers in Optics 2016, 2016
We derive analytic solutions for an infinite set of partially coherent vortex beams (PCVBs) of any azimuthal order and for any propagation distance. The correlation singularities of the beams and their orbital angular momentum are investigated. This detailed study of PCVBs opens the possibility of using such beams for remote sensing and free-space ...
C S D, Stahl, G, Gbur
openaire   +2 more sources

PROPAGATION OF PARTIALLY COHERENT BEAM IN TURBULENT ATMOSPHERE: A REVIEW (Invited Review)

open access: yes, 2015
Partially coherent beam is preferred in many applications, such as free-space optical communications, remote sensing, active laser radar systems, etc., due to its resistance to the deleterious effects of atmospheric turbulence.
Fei Wang, Xianlong Liu, Y. Cai
semanticscholar   +1 more source

Single-beam phase retrieval with partially coherent light illumination

open access: yes, 2016
A single-beam phase retrieval method with partially coherent illumination is proposed. By using an obverse and reverse iterative (ORI) algorithm, objects can be reconstructed within less time by recording a sequence of diffraction patterns at different ...
Liang, Yansheng   +6 more
core   +1 more source

Partially coherent radially polarized fractional vortex beam.

open access: yesOptics Express, 2020
A new kind of partially coherent vector beam, named a partially coherent radially polarized fractional vortex (PCRPFV) beam, is introduced as a natural extension of the recently introduced scalar partially coherent fractional vortex beams [Zeng et al ...
Jun Zeng   +6 more
semanticscholar   +1 more source

Bessel-beam representation for partially coherent fields

open access: yes, 1995
The Bessel-beam representation for partially coherent fields is introduced as an alternative to the familiar angular spectrum representation. This alternative representation is applied to far fields generated by partially coherent secondary sources ...
Agarwal, Girish S., Kowarz, Marek W.
core   +1 more source

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