Phase detection of coherence singularities and determination of the topological charge of a partially coherent vortex beam

Lu, Xingyuan; Chen, Zhao; Shao, Yijia; Zeng, Jun; Konijnenberg, Sander; Zhu, Xinlei; Popov, Sergei; Urbach, H. P.; Cai, Yangjian

doi:10.1063/1.5095713

Cited by 36 publications

(14 citation statements)

References 38 publications

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“…singularities of a partially coherent vortex beam in the focal plane were measured. From the results, the magnitude and sign of the topological charge can be determined simultaneously from the phase distribution of the correlation singularities [159].…”

Section: Determination the Topological Charge Of Partially Coherent Vmentioning

confidence: 99%

Review on vortex beams with low spatial coherence

Liu

Zeng

Cai

2019

Advances in Physics: X

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Vortex beams with helical phase, carrying phase singularity and orbital angular momentum, have attract great attention in the past decades due to their wide applications in optical communications, optical manipulation, super-resolution imaging and so on. Vortex beams with low spatial coherence, i.e. partially coherent vortex beams, carrying correlation singularity, display some unique properties during propagation, e.g. self-shaping, selfsplitting and self-reconstruction. Partially coherent vortex beams exhibit some advantages over coherent vortex beams in some applications, such as remote sensing, laser radar and free-space optical communications. This review summarizes research progress on partially coherent vortex beams, including theoretical models, propagation properties, generation and topological charge determination.

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Section: Determination the Topological Charge Of Partially Coherent Vmentioning

confidence: 99%

Review on vortex beams with low spatial coherence

Liu

Zeng

Cai

2019

Advances in Physics: X

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“…A few research efforts were put forwarded in recent years to tackle the challenges of vortex beam propagation through scattering medium by exploiting the information carrying potential of speckle fields [45,49,[57][58][59]. In addition, a few techniques were demonstrated for helicity and topological charge (TC) determination of partially coherent vortex beams [60,61], robustness investigation of low coherent vortex beam propagation through noisy and turbulent media [62,63], discrimination of incoherent vortex states of light [64], and sorting of incoherent optical vortex modes [65]. This section describes the recently developed technique for OAM mode detection and characterization by exploiting the potential features of GDH system.…”

Section: Recovery and Characterization Of Orbital Angular Momentum Modesmentioning

confidence: 99%

Ghost Diffraction Holography: A Correlation Assisted Quantitative Tool for Complex Field Imaging and Characterization

Kumari¹,

Chen²,

Singh³

et al. 2023

Holography - Recent Advances and Applications

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The fascinating domain of ghost imaging has been a subject of interest in the fundamental and applied research for the last two decades with its promising applications in various imaging and characterization scenarios. In this chapter, we discuss the recently developed ghost diffraction holography (GDH) system with due emphasis on the capability of quantitative complex-field imaging in the ghost framework. The development of the unconventional correlation-assisted GDH technique by adopting the holography concept in ghost diffraction scheme is described, and the quantitative phase imaging capability is demonstrated in the microscopy. In addition, the technique exploits the spatial statistics of time-frozen recorded speckle intensity with snapshot detection in ghost framework, which could broaden the applications of the developed microscopy to real-time imaging of two- and three-dimensional biological samples with high resolution. Furthermore, we discuss demonstrated applications of the technique in the imaging various spatially varying complex-valued macroscopic and microscopic samples and the potential application of the technique in the recovery and characterization of orbital angular momentum modes encoded in spatially incoherent speckle field.

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“…Very interesting possibilities arise from the ideas of "coherence vortices" (CV)-"hidden" phase singularities which exist in the correlation function rather than in the immediately observable field distribution (1) [164][165][166][167][168][169][170][171][172][173][174][175][176][177][178][179][180][181][182][183]. Generally, usual partially-coherent paraxial fields are spatially inhomogeneous and are characterized by the two-point correlation function…”

Section: Ubiquitous Phase Singularities In Optics and Matter Wavesmentioning

confidence: 99%

Optical phase singularities: Physical nature, manifestations and applications

Angelsky

Bekshaev²,

Vasnetsov³

et al. 2022

Front. Phys.

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Over the past 30 years, physical optics has been enriched by the appearance of singular optics as a new branch approved in scientific classifiers. This review briefly outlines the main concepts of the singular optics, their role in physical research and applications, and prospects of further development. The wave singularities are considered as a sort of structured-light elements and analyzed based on the generic example of screw wavefront dislocation (optical vortex). Their specific topological and mechanical properties associated with the transverse energy circulation are discussed. Peculiar features of the non-linear optical phenomena with singular fields are exhibited, with the special attention to generation of multidimensional entangled quantum states of photons. Optical fields with multiple singularities, especially, the stochastic speckle fields, are discussed in the context of optical diagnostics of random scattering objects. The exact and approximate correspondences between characteristic parameters of the optical-field intensity and phase distributions are analyzed with the aim of recovering phase information from the intensity measurements (“phase problem” solution). Rational singularity-based approaches to informative measurements of the scattered-field distribution are discussed, as well as their employment for the objects’ diagnostics. In particular, the practical instruments are described for the high-precision rough-surface testing. Possible enhancements of the singular-optics ideas and concepts in a wider context, including the transformation optics, near-field optics (surface waves), partially-coherent fields, and wave fields of other physical nature, are briefly exposed.

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Phase detection of coherence singularities and determination of the topological charge of a partially coherent vortex beam

Abstract: Phase detection of coherence singularities and determination of the topological charge of a partially coherent vortex beam

Cited by 36 publications

References 38 publications

Review on vortex beams with low spatial coherence

Review on vortex beams with low spatial coherence

Ghost Diffraction Holography: A Correlation Assisted Quantitative Tool for Complex Field Imaging and Characterization

Optical phase singularities: Physical nature, manifestations and applications

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