中国物理B ›› 2024, Vol. 33 ›› Issue (5): 54201-054201.doi: 10.1088/1674-1056/ad3347

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Optical trapping capability of tornado circular Pearcey beams

Na-Na Liu(刘娜娜)1, Xiao-Ying Tang(唐晓莹)1, Shun-Yu Liu(刘舜禹)1, and Yi Liang(梁毅)1,2,†   

  1. 1 Guangxi Key Laboratory for Relativistic Astrophysics, Center on Nanoenergy Research, Guangxi Colleges and Universities Key Laboratory of Blue Energy and Systems Integration, School of Physical Science and Technology, Guangxi University, Nanning 530004, China;
    2 State Key Laboratory of Featured Metal Materials and Lifecycle Safety for Composite Structures, Nanning 530004, China
  • 收稿日期:2024-01-02 修回日期:2024-03-09 接受日期:2024-03-13 出版日期:2024-05-20 发布日期:2024-05-20
  • 通讯作者: Yi Liang E-mail:liangyi@gxu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11604058), the Guangxi Natural Science Foundation (Grant Nos. 2020GXNSFAA297041 and 2023JJA110112), and the Innovation Project of Guangxi Graduate Education (Grant No. YCSW2023083).

Optical trapping capability of tornado circular Pearcey beams

Na-Na Liu(刘娜娜)1, Xiao-Ying Tang(唐晓莹)1, Shun-Yu Liu(刘舜禹)1, and Yi Liang(梁毅)1,2,†   

  1. 1 Guangxi Key Laboratory for Relativistic Astrophysics, Center on Nanoenergy Research, Guangxi Colleges and Universities Key Laboratory of Blue Energy and Systems Integration, School of Physical Science and Technology, Guangxi University, Nanning 530004, China;
    2 State Key Laboratory of Featured Metal Materials and Lifecycle Safety for Composite Structures, Nanning 530004, China
  • Received:2024-01-02 Revised:2024-03-09 Accepted:2024-03-13 Online:2024-05-20 Published:2024-05-20
  • Contact: Yi Liang E-mail:liangyi@gxu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11604058), the Guangxi Natural Science Foundation (Grant Nos. 2020GXNSFAA297041 and 2023JJA110112), and the Innovation Project of Guangxi Graduate Education (Grant No. YCSW2023083).

摘要: We systemically investigate optical trapping capability of a kind of tornado waves on Rayleigh particles. Such tornado waves are named as tornado circular Pearcey beams (TCPBs) and produced by combining two circular Pearcey beams with different radii. Our theoretical exploration delves into various aspects, including the propagation dynamics, energy flux, orbital angular momentum, trapping force, and torque characteristics of TCPBs. The results reveal that the orbital angular momentum, trapping force, and torque of these beams can be finely tuned through the judicious manipulation of their topological charges ($l_{1}$ and $l_{2})$. Notably, we observe a precise control mechanism wherein the force diminishes with $|l_{1}+l_{2}|$ and $|l_{1}-l_{2}|$, while the torque exhibits enhancement by decreasing solely with $|l_{1}+l_{2}|$ or increasing with $|l_{1}-l_{2}|$. These results not only provide quantitative insights into the optical trapping performance of TCPBs but also serve as a valuable reference for the ongoing development of innovative photonic tools.

关键词: trapping capability, tornado beams, autofocusing

Abstract: We systemically investigate optical trapping capability of a kind of tornado waves on Rayleigh particles. Such tornado waves are named as tornado circular Pearcey beams (TCPBs) and produced by combining two circular Pearcey beams with different radii. Our theoretical exploration delves into various aspects, including the propagation dynamics, energy flux, orbital angular momentum, trapping force, and torque characteristics of TCPBs. The results reveal that the orbital angular momentum, trapping force, and torque of these beams can be finely tuned through the judicious manipulation of their topological charges ($l_{1}$ and $l_{2})$. Notably, we observe a precise control mechanism wherein the force diminishes with $|l_{1}+l_{2}|$ and $|l_{1}-l_{2}|$, while the torque exhibits enhancement by decreasing solely with $|l_{1}+l_{2}|$ or increasing with $|l_{1}-l_{2}|$. These results not only provide quantitative insights into the optical trapping performance of TCPBs but also serve as a valuable reference for the ongoing development of innovative photonic tools.

Key words: trapping capability, tornado beams, autofocusing

中图分类号:  (Wave propagation, transmission and absorption)

  • 42.25.Bs
42.50.Wk (Mechanical effects of light on material media, microstructures and particles) 74.25.Uv (Vortex phases (includes vortex lattices, vortex liquids, and vortex glasses)) 87.80.Cc (Optical trapping)