Scintillation properties of a partially coherent vector beam with vortex phase in turbulent atmosphere

Yu, Jinlong; Huang, Yan; Wang, Fei; Liu, Xianlong; Gbur, Greg; Cai, Yangjian

doi:10.1364/oe.27.026676

Cited by 56 publications

(29 citation statements)

References 33 publications

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“…Scintillation index of partially coherent radially polarized vortex (PCRPV) beams, and PCV are analyzed as well. According to the obtained numerical results, scintillation index of PCRPV beams is lower than that of the PCV beams [94]. The propagation of partially coherent electromagnetic rotating elliptical Gaussian vortex (PCEREGV) beam through non-Kolmogorov turbulence is investigated numerically.…”

Section: Atmospheric Turbulencementioning

confidence: 97%

The Propagation of Vortex Beams in Random Mediums

Dalgaç¹,

Elmabruk²

2022

Vortex Dynamics - From Physical to Mathematical Aspects

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Vortex beams acquire increasing attention due to their unique properties. These beams have an annular spatial profile with a dark spot at the center, the so-called phase singularity. This singularity defines the helical phase structure which is related to the topological charge value. Topological charge value allows vortex beams to carry orbital angular momentum. The existence of orbital angular momentum offers a large capacity and high dimensional information processing which make vortex beams very attractive for free-space optical communications. Besides that, these beams are well capable of reducing turbulence-induced scintillation which leads to better system performance. This chapter introduces the research conducted up to date either theoretically or experimentally regarding vortex beam irradiance, scintillation, and other properties while propagating in turbulent mediums.

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Section: Atmospheric Turbulencementioning

confidence: 97%

The Propagation of Vortex Beams in Random Mediums

Dalgaç¹,

Elmabruk²

2022

Vortex Dynamics - From Physical to Mathematical Aspects

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“…Afterward, the vortex beams with low spatial coherence have been confirmed to have the advantage over the coherent vortex beam or the Gaussian Schell-model beam for reducing turbulence-induced degradation and scintillation [7]. However, compared with the partially coherent vortex beam, the partially coherent vector vortex beams have a stronger anti-interference ability in free-space optical communication [8].…”

Section: Introductionmentioning

confidence: 99%

Abnormally autofocusing vortex Swallowtail Gaussian vector beam with low spatial coherence

Shi¹,

Liang²,

Wu³

et al. 2023

New J. Phys.

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The precondition for the application of light beams is the ability to devise light distribution with high precision. Controlling more dimensions for structured light fields is an effective method to improve the ability to devise light distribution. The Swallowtail beam, due to its rich regulatory parameters, provides the possibility to design a light field with a specific intensity distribution. Utilizing the Swallowtail beam as a foundation, we design its initial phase, polarization, and coherent structure, and propose a partially coherent azimuthally polarized circular vortex Swallowtail Gaussian beam (PCAPCVSGB) in our paper. This beam exhibits an abnormal self-focusing ability and forms an easily adjustable optical potential well at the focal plane, providing another effective tool for achieving optical manipulation. In addition, the PCAPCVSGB also shows an interesting vector property. It possesses a stable polarization singularity even with changes in coherence and topological charges, which exhibits a potential application value in optical communication.

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“…Similarly, non-uniformly polarized beams like RP beam do a better job in turbulence transmission than linearly polarized beams [24,25], since the orthogonally polarized components of RP beam can offset the effects of turbulence on each other. Moreover, as introduced in the relevant research on partially coherent vector beams [26,27], the partially coherent RP-RSPEPVBs possess the characteristics of partially coherent beam and vector beam simultaneously, which may be more suitable for atmospheric turbulence propagation.…”

Section: Introductionmentioning

confidence: 99%

Propagation properties of partially coherent radially polarized rotationally-symmetric power-exponent-phase vortex beams in turbulent atmosphere

Yang,

Dou,

et al. 2023

New J. Phys.

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In this paper, the propagation properties of partially coherent radially polarized rotationally-symmetric power-exponent-phase vortex beams (RP-RSPEPVBs) in turbulent atmosphere were investigated. Based on the extended Huygens-Fresnel principle and unified theory of coherence and polarization, the theoretical propagation model was established. Then, the numerical simulations were carried out to reveal the evolution of intensity distribution, spectral degree of coherence (DOC) and spectral degree of polarization (DOP) in turbulent atmosphere. The results showed that although the partially coherent RP-RSPEPVBs diverged during the propagation, the spatial structure remains analogous, and the relatively larger waist widths gain smaller divergence. Moreover, the optical pattern can be evidently modulated by optical parameters, as the number of sidelobes can be changed with topological charge l, and the continuity of the light spot as well as the rotating speed around the optical axis can be influenced by power exponent n. Besides, the spectral DOC and DOP would decrease with larger propagation distance and refractive-index structure constant, but decrease less with a shorter coherence width. This work may be helpful in fields such as remote sensing and optical communication.

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Scintillation properties of a partially coherent vector beam with vortex phase in turbulent atmosphere

Cited by 56 publications

References 33 publications

The Propagation of Vortex Beams in Random Mediums

The Propagation of Vortex Beams in Random Mediums

Abnormally autofocusing vortex Swallowtail Gaussian vector beam with low spatial coherence

Propagation properties of partially coherent radially polarized rotationally-symmetric power-exponent-phase vortex beams in turbulent atmosphere

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