Generation of concentric perfect Poincaré beams

Gu, Zhongzheng; Yin, Da; Gu, Fengyan; Zhang, Yanran; Nie, Shouping; Feng, Shuai; Ma, Jun; Chen, Yuan

doi:10.1038/s41598-019-50705-z

Cited by 9 publications

(5 citation statements)

References 34 publications

(32 reference statements)

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“…Because of the way these spheres are constructed, the beams represented by points on each of these spheres have different topological features. Beams represented by points on HOPS are constant ellipticity fields, and beams represented by points on HyOPS are Poincaré beams [112,[122][123][124][125][126][127][128][129]. So far introduced, V-points lie on the surface of HOPS (equatorial points), whereas C-points lie on the surface of HyOPS (equatorial points).…”

Section: Superpositionsmentioning

confidence: 99%

Phase Singularities to Polarization Singularities

Ruchi

Senthilkumaran

Pal

2020

International Journal of Optics

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Polarization singularities are superpositions of orbital angular momentum (OAM) states in orthogonal circular polarization basis. The intrinsic OAM of light beams arises due to the helical wavefronts of phase singularities. In phase singularities, circulating phase gradients and, in polarization singularities, circulating ϕ12 Stokes phase gradients are present. At the phase and polarization singularities, undefined quantities are the phase and ϕ12 Stokes phase, respectively. Conversion of circulating phase gradient into circulating Stokes phase gradient reveals the connection between phase (scalar) and polarization (vector) singularities. We demonstrate this by theoretically and experimentally generating polarization singularities using phase singularities. Furthermore, the relation between scalar fields and Stokes fields and the singularities in each of them is discussed. This paper is written as a tutorial-cum-review-type article keeping in mind the beginners and researchers in other areas, yet many of the concepts are given novel explanations by adopting different approaches from the available literature on this subject.

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Section: Superpositionsmentioning

confidence: 99%

Phase Singularities to Polarization Singularities

Ruchi

Senthilkumaran

Pal

2020

International Journal of Optics

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“…Note that the phase mask was combined with two parts and with adverse TC parameters. Therefore, the spatial structure and TC distribution of the PVOVAs can be easily modulated via a separately controllable phase mask combined with two parts [22].…”

Section: Generation Methods Of Pvovasmentioning

confidence: 99%

“…Yuan et al proposed and experimentally generated the concentric perfect vector vortex by an encoded annular phase mask. The TC value, radius, and states of polarization of each sub-vortex in the concentric perfect vector vortex can be independently adjusted and it has broad application prospects in optical fiber multi-channel communication [22]. These excellent studies encourage further exploration of the perfect vector vortex optical field with novel properties.…”

Section: Introductionmentioning

confidence: 95%

Encoding and decoding communications based on perfect vector optical vortex arrays

Long¹,

Hu²,

Ma³

et al. 2022

J. Phys. D: Appl. Phys.

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We proposed the perfect vector optical vortex arrays (PVOVAs) for encoding and decoding communications, including the 2×2, 1×4, 4×4, and 2×4 array forms, which were generated with the coaxial superposition of two vector optical vortex arrays with left- and right-handed circular polarization. The polarization order and state of each vector element could be modulated independently by adjusting the corresponding topological charges (TCs) and additional phases, θn. By attaching code information to these vector elements with different states of polarization, the hexadecimal code elements, including 0 to F, were represented. Therefore, PVOVAs consisting of multiple vector elements can transmit encoding information and be decoded as original information in the receiving end. The bighorn sheep grayscale image, with a size of 64×64 pixels, was transmitted using the encoding and decoding communication via PVOVAs, and the received restored image had a reliable accuracy. This study proves PVOVAs have flexible spatial structure and controllable state of polarization, and it expands the application of vector optical fields in optical encoding and decoding communication.

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“…25,26 Doing so generates spatially varying polarization states, including radial, azimuthal, spiral 27 and hybrid polarization, 28,29 as well as full Poincaré beams [30][31][32][33][34] and custom-designed polarization modes. [35][36][37][38][39][40][41][42][43][44] A paraxial vectorial light beam can be written as…”

Section: Spatially Structured Vector Fieldsmentioning

confidence: 99%

Vectorial light-matter interaction -- exploring spatially structured complex light fields

Wang,

Castellucci,

Franke-Arnold

2020

Preprint

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Research on spatially-structured light has seen an explosion in activity over the past decades, powered by technological advances for generating such light, and driven by questions of fundamental science as well as engineering applications. In this review we highlight work on the interaction of vector light fields with atoms, and matter in general. This vibrant research area explores the full potential of light, with clear benefits for classical as well as quantum applications.

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Generation of concentric perfect Poincaré beams

Cited by 9 publications

References 34 publications

Phase Singularities to Polarization Singularities

Phase Singularities to Polarization Singularities

Encoding and decoding communications based on perfect vector optical vortex arrays

Vectorial light-matter interaction -- exploring spatially structured complex light fields

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