Results 261 to 270 of about 72,451 (334)
Evolution of singularities in a partially coherent vortex beam
Journal of the Optical Society of America A, 2009 We study the evolution of phase singularities and coherence singularities in a Laguerre-Gauss beam that is rendered partially coherent by letting it pass through a spatial light modulator. The original beam has an on-axis minumum of intensity--a phase singularity--that transforms into a maximum of the far-field intensity.
van Dijk, T., Visser, T.D.
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Beam wander of partially coherent twisted elliptical vortex beam in turbulence
Optik, 2020Based on the generalized Huygens–Fresnel theorem, the characteristics of beam wander in partially coherent elliptical vortex beams in anisotropic non-Kolmogorov turbulence are studied.
Lin Wang +4 more
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Partially coherent vortex beam with periodical coherence properties
Journal of Quantitative Spectroscopy and Radiative Transfer, 2019We introduce a new kind of partially coherent vortex beam with periodical coherence properties, named optical coherence vortex lattices (OCVLs). With the help of the generalized Collins formula, we explore the propagation properties of the intensity and ...
Xianlong Liu +2 more
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The spectral properties of a partially coherent Lommel-Gaussian beam in turbulent atmosphere
Optics and Laser Technology, 2020Based on the extended Huygens–Fresnel principle, the analytical propagation equations of a partially coherent Lommel-Gaussian (PCLG) beam propagating in atmospheric turbulence have been introduced.
Qiangbo Suo, Yiping Han, Zhiwei Cui
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Partially coherent Pearcey–Gauss beams
Optics Letters, 2020We investigate the dynamics of partially coherent Pearcey–Gauss beams propagating in free space, theoretically and experimentally. They are produced by introducing the degree of coherence (DOC) function with Gaussian Schell-model correlation into the light source in the frequency domain.
Xiaoyan Zhou, Zihao Pang, Daomu Zhao
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Theoretical and computational study of a partially coherent laser beam in a marine environment
Physica Scripta, 2022The propagation formula of a partially coherent Generalized Flattened Hermite-Cosh-Gaussian (GFHChG) beam in maritime atmospheric turbulence is derived with the help of the extended Huygens–Fresnel principle.
S. Chib, M. Bayraktar, A. Belafhal
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Partially coherent Ince–Gaussian beams
Optics Letters, 2020We report on the study and generation of Ince–Gaussian beams in the spatially partially coherent regime. The inherent random fluctuations both in time and space of these partially coherent fields make their characterization difficult. Our results show that the cross-correlation function (CCF) provides insight into the composition of the Ince–Gaussian ...
Adad Yepiz +2 more
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Partially coherent nonparaxial beams
Optics Letters, 2004The concept of a partially coherent nonparaxial beam is proposed. A closed-form expression for the propagation of nonparaxial Gaussian Schell model (GSM) beams in free space is derived and applied to study the propagation properties of nonparaxial GSM beams.
Kailiang, Duan, Baida, Lü
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Partially coherent conical beams
Optics Letters, 2000We introduce a new class of partially coherent beams that can propagate over large distances without changing their transverse profiles and their coherence properties. Such beams are generated by an incoherent superposition of identical fully coherent beams of arbitrary form, whose axes lie on a cone.
A V, Shchegrov, E, Wolf
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