Results 261 to 270 of about 161,946 (330)

Scintillation of a partially coherent beam with pointing errors resulting from a slightly skewed underwater platform in oceanic turbulence.

Applied Optics, 2019
In this paper, we analyze the scintillation index of a partially coherent beam propagating through weak oceanic turbulence, taking into account the pointing errors attributed to the slightly skewed underwater platform.
Zongmin Cui, Peng Yue, Xiang Yi, Jing Li
semanticscholar   +1 more source

Partially coherent vectorial nonparaxial beams

Journal of the Optical Society of America A, 2004
Generalized vectorial Rayleigh-Sommerfeld diffraction integrals are developed for the cross-spectral-density matrices of spatially partially coherent beams. Using the Gaussian Schell-model (GSM) beam as an example, we derive the expressions for the propagation of cross-spectral-density matrices and intensity of partially coherent vectorial nonparaxial ...
Kailiang, Duan, Baida, Lü
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Coherence vortices in partially coherent beams

Optics Communications, 2003
It is demonstrated that the spectral degree of coherence of a partially coherent beam may possess isolated pairs of points at which its phase is singular, and that in the neighborhood of these points the phase may possess a vortex structure. Partially coherent beams consisting of Hermite-Gaussian modes are considered as an example.
Gbur, G.J., Visser, T.D.
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Partially coherent bottle beams

Optics Communications, 2005
We theoretically investigate the three-dimensional intensity distribution of the partially coherent beams focused by a lens. It is shown that the intensity distribution in the neighborhood of the geometrical focus is not only dependent on the intensity distribution of the incident partially coherent beam, but also on its coherence.
Jixiong Pu, Xiaoyun Liu, Shojiro Nemoto
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Partially coherent beam propagation

SPIE Proceedings, 2003
We investigate the propagation of a partially coherent beam produce by a plane source. By utilizing Helmholtz equation, the intensity of the source in plane z = 0, and plane z are obtained. Then by considering new theoretical prediction on cross-spectral density function of the field in the plane z = 0, the root-means square (rms) beam radius, as a ...
H. Tajalli, M. Sahrai
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Beam wander of partially coherent Airy beams

Journal of Modern Optics, 2014
The beam wander of a partially coherent Airy beam in a turbulent atmosphere was investigated. By using the extended Huygens–Fresnel integral, as analytical expression is derived for the second-order moment of a partially coherent Airy beam. Based on the theory proposed by Andrews, a general expression is obtained for the beam wander of a partially ...
Wei Wen, Xiuxiang Chu
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Beam shaping of partially coherent light beams

Frontiers in Optics, 2003
Laser beams with a uniform profile or other kinds of profiles are desired in many applications, such as in laser fusion, laser heat treatment, and optical data proceeding etc.. Unfortunately a laser operated in TEM00 mode delivers a laser beams with a Gaussian profile. Therefore it is very important to reshape a laser beam with a profile to the desired
Jixiong Pu, Shojiro Nemoto
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Polarization characteristics of radially polarized partially coherent vortex beam in anisotropic plasma turbulence

Waves in Random and Complex Media, 2020
This paper introduces the propagation properties and polarization characteristics of radially polarized partially coherent vortex beams in anisotropic plasma turbulence and discusses in detail the distribution of light intensity in such beams as a ...
Jiang-ting Li, Jiachao Li, Lixin Guo, Mingjian Cheng, Luo Xi   +4 more
semanticscholar   +1 more source

Partially coherent multiple-beam interference

Applied Physics, 1974
The general formula for multiple-beam interference due to regular slit arrays illuminated with partially coherent quasi-monochromatic light is derived. The correlation functions chosen for partially coherent light assume Gaussian, sinc and besinc forms of correlation. The intensity distribution in the interference patterns is presented and discussed as
Hitoshi Fujii, Toshimitsu Asakura
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Partially coherent vortex beams

Complex Light and Optical Forces XII, 2018
Beams with structured phase and beams with partial spatial coherence have both been considered for a variety of applications for many years, and it would seem natural to combine their advantageous properties. However, there is a conceptual difficulty in doing so because partially coherent beams lack a definite phase, which would seem to rule out a ...
openaire   +1 more source