Propagation properties of a partially coherent anomalous hollow vortex beam in underwater oceanic turbulence

Liu, Dajun; Wang, Guiqiu; Yin, Honming; Zhong, Haiyang; Wang, Yaochuan

doi:10.1016/j.optcom.2019.01.006

Cited by 42 publications

(22 citation statements)

References 33 publications

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“…It is found that the partially coherent four-petal Gaussian vortex that has four petals profile in near field propagation, then turns into a Gauss-like beam rapidly with either decreasing σ, ς and ε, or increasing the oceanic parameter χ t in the far field [102]. For partially coherent anomalous hollow vortex beam, the parameters χ t and ς give rise to larger spreading of beam rather than ε [103].…”

Section: Oceanic Turbulencementioning

confidence: 95%

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: Oceanic Turbulencementioning

confidence: 95%

The Propagation of Vortex Beams in Random Mediums

Dalgaç¹,

Elmabruk²

2022

Vortex Dynamics - From Physical to Mathematical Aspects

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“…The intensity of partially coherent beam [10,11], twisted anisotropic GSM beam [12] go through oceanic turbulence are analyzed in theory. The intensity and transmittance of laser in oceanic turbulence are also researched [13][14][15][16][17]. Recently, the beams correlated with multi-Gaussian Schell-model (MGSM) function were proposed and studied [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Propagation of a polychromatic stochastic electromagnetic multi-Gaussian Schell-model vortex beam in oceanic turbulence

Yan

Liu

Wang

et al. 2022

Seventeenth National Conference on Laser Technology and Optoelectronics

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The analytical equations of the polychromatic stochastic electromagnetic multi-Gaussian Schell-model vortex (EMGSMV) beam through oceanic turbulence are obtained in theory. The influences of source parameters and turbulence on changes in spectral shifts and polarization of a polychromatic EMGSMV beam are numerically analyzed. It is seen that the relative spectral shift of such beam with larger N , smaller l and smaller δ0 will evolve from red shift to blue shift on propagation, and the polarization can become poor when a polychromatic EMGSMV beam propagates in stronger oceanic turbulence.

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“…With the rise and development of underwater wireless optical communication and ocean remote sensing and imaging applications, more and more attention has been paid to the optical beams' properties, such as the degree of coherence, the degree of polarization, the effective beam widths, and the average intensity of various kinds of laser beams propagating through a turbulent ocean environment [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Propagation Properties of an Off-Axis Hollow Gaussian-Schell Model Vortex Beam in Anisotropic Oceanic Turbulence

Wang

Zhao

2021

JMSE

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Based on the extended Huygens–Fresnel principle and the power spectrum of anisotropic oceanic turbulence, the analytical expressions of the average intensity and coherence properties of an off-axis hollow Gaussian-Schell model (OAHGSM) vortex beam propagating through anisotropic oceanic turbulence were derived. The effects of turbulent ocean and beam characteristic parameters on the evolution properties of the OAHGSM vortex beam were analyzed in detail. Our numerical simulation results showed that the OAHGSM vortex beam with a larger position factor is more focusable. Meanwhile, the OAHGSM vortex beam eventually evolves into a Gaussian-like beam after propagating through the anisotropic oceanic turbulent channel. The speed of this process can be accelerated by the decrease of the hollow order, topological charge, beam width, and transverse coherence width of the beam. The results also indicated that the normalized average intensity spreads more greatly and the spectral degree of coherence decays more rapidly for the smaller dissipation rate of the kinetic energy per unit mass of fluid, the smaller anisotropic coefficient, the smaller inner scale factor, the larger dissipation rate of the mean-squared temperature, and the higher temperature–salinity contribution ratio.

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Propagation properties of a partially coherent anomalous hollow vortex beam in underwater oceanic turbulence

Cited by 42 publications

References 33 publications

The Propagation of Vortex Beams in Random Mediums

The Propagation of Vortex Beams in Random Mediums

Propagation of a polychromatic stochastic electromagnetic multi-Gaussian Schell-model vortex beam in oceanic turbulence

Propagation Properties of an Off-Axis Hollow Gaussian-Schell Model Vortex Beam in Anisotropic Oceanic Turbulence

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