All-dielectric metasurface based on particle swarm optimization algorithm for generating high-purity vortex pulses

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-03-28 DOI:10.1016/j.optcom.2025.131812

Jianghong Xu , Huan Yuan , Zheqiang Zhong , Bin Zhang

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引用次数: 0

Abstract

Ultra-short vortex pulses have attracted widespread attention due to their unique properties and extensive applications in fields such as high-field laser physics, high-energy density physics, micro-nano manipulation, and quantum entanglement. We propose a metasurface based on the particle swarm optimization algorithm for converting ultrashort gaussian pulses into high-purity ultrashort vortex pulses, operating within a broadband wavelength range of 750 nm–850nm. The results indicate that the mode purity of the vortex pulses generated by the designed metasurfaces with topological charges l = 2 and l = 10 is higher than 99.5 % and 98.0 %, respectively, within the bandwidth, and they exhibit good robustness. Furthermore, similar methods can be extended to design metasurfaces that generate other topological charges. The proposed metasurface design and optimization method are significant for reducing strong distortions caused by dispersion and for applications in ultra-short vortex pulse systems.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.