Partially coherent vortex beams: Fundamentals and applications

Dong, Mingdong; Chen, Zhao; Cai, Yangjian; Yang, Yuanjie

doi:10.1007/s11433-020-1579-9

Cited by 58 publications

(25 citation statements)

References 120 publications

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“…In Figure 6, we consider a low spatial coherence (σ 0.5 mm) to investigate the properties of the PC-PEPV beam. The dark cores in the intensity have completely vanished due to the modes overlapping for the partially coherent beam with lower coherence width [37]. The intensity is Gaussian distributed, and the geometry of the PC-PEPV beam becomes elliptic, triangular, quadrangle, and pentagon light spots which is specific compared with the conventional partially coherent vortex beam (show a circular intensity spot with Gaussian distribution) [32].…”

Section: Numerical Simulation Results With Different Coherence Width and Tcmentioning

confidence: 99%

“…The partially coherent vortex beam was first proposed by Gori et.al., which is expressed by the incoherent superposition of a series of coherent Laguerre-Gaussian modes [31]. Subsequently, the study of the vortex beam has expanded from fully coherent to partially coherent and attracted enormous attention during the past decades [32][33][34][35][36][37][38]. The partially coherent vortex beam has several advantages over the fully coherent vortex beam.…”

Section: Introductionmentioning

confidence: 99%

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Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam

Zhang

Wang

et al. 2021

Front. Phys.

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We report on a partially coherent power-exponent-phase vortex beam (PC-PEPV), whose spatial coherence is controllable and the initial phase exhibits a periodic power exponential change. The PC-PEPV beam was generated experimentally with various spatial coherence widths, and its propagation properties were studied both numerically and experimentally. By modulating the topological charge (TC) and power order of the PC-PEPV beam, the structure of the vortex beam can be adjusted from circular to elliptic, triangular, quadrangle, and pentagon. When the power order is odd, the PC-PEPV beam with a negative TC can be generated, and the profiles of the PC-PEPV beam can be precisely controlled via adjusting the value of the power order. For the case of high spatial coherence width, the number of the dark cores in the polygonal intensity array of the PC-PEPV beam equals the magnitude of the TC. However, when decreasing the spatial coherence width, the dark cores vanish and the intensity gradually transforms into a polygonal light spot. Fortunately, from the modulus and phase distributions of the cross-spectral density (CSD), both the magnitude and sign of the TC can be determined. In the experiment, the modulus and phase distribution of the CSD are verified by the phase perturbation method. This study has potential applications in beam shaping, micro-particle trapping, and optical tweezers.

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Section: Numerical Simulation Results With Different Coherence Width and Tcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam

Zhang

Wang

et al. 2021

Front. Phys.

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“…of integrated photonic systems. Hopefully, vortex beams in light, as well as other forms of waves, will continue to thrive and enable new applications in many other fields [123,124] .…”

Section: Discussionmentioning

confidence: 99%

Vortex beam: generation and detection of orbital angular momentum [Invited]

Bai

et al. 2022

Chin. Opt. Lett.

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112

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“…This beam types have some unique properties, such as the cross-spectral density, and correlation function which is different than that of fully coherent beams. On the other hand, partially coherent beams are able to reduce the scintillation induced by the turbulence, the beam spreading, and the image noise when compared with the fully coherent beams [81,82]. Recently, many research groups have conducted a wide range of studies regarding the propagation of partially coherent vortex beams either in atmosphere, ocean or other mediums.…”

Section: Propagation Properties Of Partially Coherent Vortex Beamsmentioning

confidence: 99%

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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Partially coherent vortex beams: Fundamentals and applications

Cited by 58 publications

References 120 publications

Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam

Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam

Vortex beam: generation and detection of orbital angular momentum [Invited]

The Propagation of Vortex Beams in Random Mediums

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