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Communication

1 Citations

862 Views

10 Pages

Far-Field Topological Structure of the Second Harmonic from Higher-Order Poincaré Sphere Beam

Yangyang Li,
Ziping Zhu,
Yuanxiang Wang,
Jiantai Dou,
Li Fan,
Bo Li and
Youyou Hu

Photonics2025, 12(5), 407;https://doi.org/10.3390/photonics12050407

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24 April 2025

In this paper, the far-field topological structures (FFTSs) of the second harmonic (SH) from higher-order Poincaré sphere (HOPS) beams, including circularly polarized vortex beams (VBs), cylindrically vector beams (CVBs) and elliptically polar...

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2 Citations

2,229 Views

13 Pages

Geometric Representation of Vector Vortex Beams: The Total Angular Momentum-Conserving Poincaré Sphere and Its Braid Clusters

Wangke Yu,
Hailong Pi,
Marika Taylor and
Jize Yan

Photonics2023, 10(11), 1276;https://doi.org/10.3390/photonics10111276

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17 November 2023

This paper presents the total angular momentum-conserving Poincaré sphere (TAM-C PS), which offers a novel framework for efficiently characterizing a wide range of vector vortex beams. Unlike other types of Poincaré spheres, the TAM-C P...

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970 Views

12 Pages

Generation of Higher-Order Poincaré Beams with Polarization States Varying Along the Propagation Direction Based on Dielectric Metasurfaces

Kaixin Zhao,
Teng Ma,
Manna Gu,
Qingrui Dong,
Haoyan Zhou,
Yuantao Wang,
Wenxin Wang,
Chuanfu Cheng and
Chunxiang Liu

Nanomaterials2025, 15(7), 478;https://doi.org/10.3390/nano15070478

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22 March 2025

Vector beams (VBs) with longitudinally varying polarization states provide a new dimension for light field manipulation, and promote the advancements of related areas such as optical metrology, longitudinal depth detection, and classical and quantum...

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