Experimental determination of the azimuthal and radial mode orders of a partially coherent LGpl beam (Invited Paper)

Liu, Xianlong; Wu, Tengfei; Liu, Lin; Chen, Zhao; Cai, Yangjian

doi:10.3788/col201715.030002

Cited by 16 publications

(5 citation statements)

References 30 publications

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“…which is consistent with the results presented in [28][29][30]. Therefore, here we provide an alternative way to measure the beam mode indices of a vortex beam.…”

Section: Numerical Resultssupporting

confidence: 91%

“…A LG beam is a classical representation of a vortex beam [21,27] which is characterized by the radial mode index p and azimuthal mode index l. Determining the radial and azimuthal mode indices (p, l) of a vortex beam is an intriguing and fundamental problem in quantum information and physics. Several methods are proposed to identify the beam mode indices such as measuring far-field cross-correlation or auto-correlation function and far-field DOC [28][29][30], which are only appropriate for a standard LG beam. Very recently, Dong et al [31] proposed for the first time a method for determining the azimuthal mode index of an elegant LG beam through farfield DOC.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Standard and elegant higher-order Laguerre–Gaussian correlated Schell-model beams

Liang¹,

Khosravi²,

Liang³

et al. 2019

J. Opt.

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To date, all of the Laguerre–Gaussian (LG) correlated Schell-model beams proposed and studied are restricted to the standard form with the beam mode indices (0, l), termed as a SLG0lCSM beam. We propose, for the first time, the elegant and standard higher-order LG correlated Schell-model beams as an extension to a SLG0lCSM beam. We develop theoretical formulae to determine the beam mode indices of a vortex beam and describe propagation effects of such beams. We demonstrate that by controlling the beam mode indices, one can produce different intensity distribution patterns during propagation, for example, a dark or solid core surrounded by bright concentric rings. Moreover, using our proposed beams, we illustrate how single-layer and multi-layer adjustable optical cages can be formed near the back of the focal zone of a lens. As anticipated, the proposed beams may find important applications in particle trapping, optical manipulation and optical communications.

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“…which is consistent with the results presented in [28][29][30]. Therefore, here we provide an alternative way to measure the beam mode indices of a vortex beam.…”

Section: Numerical Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Standard and elegant higher-order Laguerre–Gaussian correlated Schell-model beams

Liang¹,

Khosravi²,

Liang³

et al. 2019

J. Opt.

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show abstract

“…A, B, C, and D are the transfer matrix elements of the optical system. The intensity and CDOC of the SCLs in the output plane are obtained as [53]:…”

Section: Methodsmentioning

confidence: 99%

“…In the experiment, we can calculate the square modulus of the CDOC using the following formula. As the light transmitted through the rotating ground glass disk obeys Gaussian statistics, by applying the Gaussian moment theorem, we can express the square modulus of the CDOC of the beam in the output plane using the intensity correlation expression, as follows [53]:…”

Section: Methodsmentioning

confidence: 99%

Flexible Construction of a Partially Coherent Optical Array

Zhu,

Wu,

et al. 2024

Photonics

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In this article, we introduce a flexible and programmable method to construct a multi-parameter optical array to meet urgent and personalized needs, such as multi-particle capture and manipulation and material processing, and enrich the degree of freedom when constructing an optical array. As an example, uniform and nonuniform spiral coherent lattices (SCLs) and their propagation properties are investigated both theoretically and experimentally. Various intensity distributions, e.g., a uniform and nonuniform spiral light field, can be achieved by manipulating the diverse parameters. Additionally, the complex degree of coherence exhibits phase singularities in the source plane, which can be used for constructing optical vortex beams.

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“…The advantages and the limitations of evaluating TC from the contour integral of the phase are examined in [5] by considering the propagation of Laguerre-Gaussian (LG) beam propagation in weak to strong atmospheric turbulence. In [6], TC which also refers to the azimuthal order of LG beams, is determined experimentally through measuring the MCF or cross correlation function in the focal plane. By examining the properties of the partially coherent vortex beams via cross spectral density function, it is concluded in [7] that in addition to azimuthal order based OAM, radial order of the LG beams may also be employed for optical communications.…”

Section: Introductionmentioning

confidence: 99%

Mutual coherence function based topological charge detection in a Gaussian vortex beam optical communication system

Eyyuboğlu¹

2022

Phys. Scr.

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We investigate a topological charge (TC) detection schema for an optical communication system employing Gaussian vortex beam (GVB). In this scenario, the transmitter maps the electrical message symbols to the TCs of GVBs. Thus obtained optical signal propagates in turbulent atmosphere arriving at the receiver, where a detection process is implemented to determine the TC of GVB by correlating the imaginary part of the mutual coherence function (MCF) of the incoming beam against the stored profiles. The feasibility of such a schema is firstly established by examining and comparing the analytical formulation of MCF and that of random phase screen setup. The latter is then used to explore the success rate and boundaries of this particular detection schema. Our results show that the proposed detection schema can operate with a error rate of 5 % at a link length of 5.5 km and atmospheric turbulence structure constant of 10-14.

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Experimental determination of the azimuthal and radial mode orders of a partially coherent LGpl beam (Invited Paper)

Cited by 16 publications

References 30 publications

Standard and elegant higher-order Laguerre–Gaussian correlated Schell-model beams

Standard and elegant higher-order Laguerre–Gaussian correlated Schell-model beams

Flexible Construction of a Partially Coherent Optical Array

Mutual coherence function based topological charge detection in a Gaussian vortex beam optical communication system

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