On-demand longitudinal transformations of light beams via an amplitude-phase-decoupled Pancharatnam-Berry phase element
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arXiv
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| Autores principales: | , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866913827892756480 |
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| author | Zou, Yu Li, Yanke Yan, Jialong Liu, Hui Zhang, Yuqi Wen, Dandan Li, Peng Wei, Bingyan Zhao, Jianlin Liu, Sheng |
| author_facet | Zou, Yu Li, Yanke Yan, Jialong Liu, Hui Zhang, Yuqi Wen, Dandan Li, Peng Wei, Bingyan Zhao, Jianlin Liu, Sheng |
| contents | Overcoming the inherent phase-only modulation limitation of conventional Pancharatnam-Berry (PB) elements, we propose a checkerboard-encoded PB element that enables simultaneous amplitude and phase modulation through PB phase engineering. This single-element platform directly generates polarization-rotating beams with continuously varying polarization angles along the propagation axis, eliminating traditional dynamic phase requirements. By strategically combining the proposed element with a liquid crystal q-plate and waveplates, we demonstrate on-demand longitudinal transformations of polarization states and high-order Poincaré sphere beams. Significantly, we achieve, for the first time to our knowledge, the propagation-transformed optical skyrmions, whose topological textures evolve with propagation distance. This amplitude-phase decoupling mechanism and the integration solution for various longitudinal transformations open new avenues in structured light manipulation, particularly benefiting quantum optics and topological photonics applications requiring longitudinal mode control. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_01027 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On-demand longitudinal transformations of light beams via an amplitude-phase-decoupled Pancharatnam-Berry phase element Zou, Yu Li, Yanke Yan, Jialong Liu, Hui Zhang, Yuqi Wen, Dandan Li, Peng Wei, Bingyan Zhao, Jianlin Liu, Sheng Optics Overcoming the inherent phase-only modulation limitation of conventional Pancharatnam-Berry (PB) elements, we propose a checkerboard-encoded PB element that enables simultaneous amplitude and phase modulation through PB phase engineering. This single-element platform directly generates polarization-rotating beams with continuously varying polarization angles along the propagation axis, eliminating traditional dynamic phase requirements. By strategically combining the proposed element with a liquid crystal q-plate and waveplates, we demonstrate on-demand longitudinal transformations of polarization states and high-order Poincaré sphere beams. Significantly, we achieve, for the first time to our knowledge, the propagation-transformed optical skyrmions, whose topological textures evolve with propagation distance. This amplitude-phase decoupling mechanism and the integration solution for various longitudinal transformations open new avenues in structured light manipulation, particularly benefiting quantum optics and topological photonics applications requiring longitudinal mode control. |
| title | On-demand longitudinal transformations of light beams via an amplitude-phase-decoupled Pancharatnam-Berry phase element |
| topic | Optics |
| url | https://arxiv.org/abs/2505.01027 |