A new study of turbulence effects in the marine environment on the intensity distributions of flat-topped Gaussian beams

Khannous, F.; Belafhal, A.

doi:10.1016/j.ijleo.2016.05.116

Cited by 15 publications

(2 citation statements)

References 14 publications

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“…Nowadays, laser beams with flat-topped profiles (Li 2002;Nossir et al 2018) have gained a great important due to their widespread use in material thermal processing. Some models have been developed in order to describe flat-topped beams such as Li's flat-topped-Gaussian beam and Li's flattened Gaussian beams (Khannous et al 2014;Khannous and Belafhal 2016;Ez-zariy and Belafhal 2016;Kinani et al 2011). The current paper aims to investigate the generation of optical vortices by illuminating a RSSZP with a Flat-topped beam.…”

Section: Introductionmentioning

confidence: 99%

Generation of optical vortices by flat-topped beam diffracted with a radial phase shift spiral zone plate

Nossir,

Dalil-Essakali,

Belafhal

2023

Preprint

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In this work, we investigate the generation of optical vortices by means of the so-called radial-phase shift spiral zone plate (RSSZP) from a flat-topped beam (FTB). Based on the process of the extended Huygens-Fresnel integral, an analytical formulation of the field distribution for the generated beam is developed. The evolution of the intensity distribution of the diffracted beam is numerically illustrated by studying the effects of some parameters. Moreover, it is established that the characteristics of the intensity of the generated beam is increased with the beam waist, on the contrary, this intensity is decreased by the augmentation of the beam order N. Furthermore, it is demonstrated that in the case of the topological charge equal to zero. The behavior of the beam is converted into a fundamental Gaussian. However, it is found that, for the topological charge superior to zero we have a vortex beam. In addition, it can be noted that the increase of the beam order leads the dark part size becomes large. In addition, as the shifting parameter is increased, the lobes appear larger. Finally, this research may be useful in different applications such as in optical switches and micromanipulation.

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Section: Introductionmentioning

confidence: 99%

Generation of optical vortices by flat-topped beam diffracted with a radial phase shift spiral zone plate

Nossir,

Dalil-Essakali,

Belafhal

2023

Preprint

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“…In 2018, Khannous and Belafhal treated the development of the atmospheric spectral model for the marine environment (Khannous and Belafhal 2018) which is widely applied in turbulent maritime atmosphere. In the literature, numerous works have been focused on investigating and analyzing the impact of turbulent marine on the propagation of different types of laser beams like hypergeometric-gaussian type II beam (Khannous et al 2023), a partially coherent laser , flat-topped Gaussian beam (Khannous and Belafhal. 2016), Gaussian beam (Toselli et al 2010), Hankel-Bessel-Gaussian pulse beam (Zhang et al 2017), a new generalized laser beam (Saad et al 2023), Li's flattened Gaussian beams (Khannous et al 2014), a Model vortex higher-order cosh-Gaussian beam , Airy beams (Zhu et al 2016) and partially spatially coherent laser beam (Nelson et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Maritime turbulence effect on the axial propagation properties of a Bessel higher-order cosh-Gaussian laser beam

Nossir,

Dalil-Essakali,

Belafhal

2023

Preprint

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In this study, the axial propagation properties of the Bessel higher-cosh-Gaussian (BHChG) beam in maritime atmospheric turbulence are reported. Based on the extended Huygens-Fresnel principal, we extracted the analytical expression of the BHChG beam spreading in the considered medium. From our derived formula, we investigated numerical simulations to determine the maritime turbulence effect on the characteristics of the BHChG beam under various parameters of the maritime turbulence and the source beam. The obtained results show that the Gaussian waist, cosh parameter, wavelength, beam waist, inner scale and the refractive-index structure parameter, have an interesting effect on the propagation properties of this beam. Additionally, under suitable conditions various particular cases of the axial intensity of the BHChG beam have been derived from the derived result. The outputs of this study have potential applications in laser designators, optical communication systems and remote sensing.

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Introduction of generalized Bessel–Laguerre–Gaussian beams and its central intensity travelling a turbulent atmosphere

et al. 2018

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A new study of turbulence effects in the marine environment on the intensity distributions of flat-topped Gaussian beams

Cited by 15 publications

References 14 publications

Generation of optical vortices by flat-topped beam diffracted with a radial phase shift spiral zone plate

Generation of optical vortices by flat-topped beam diffracted with a radial phase shift spiral zone plate

Maritime turbulence effect on the axial propagation properties of a Bessel higher-order cosh-Gaussian laser beam

Introduction of generalized Bessel–Laguerre–Gaussian beams and its central intensity travelling a turbulent atmosphere

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