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Tunable OAM interaction between phase and intensity singularities

Author

Listed:
  • Liu, Shunyu
  • Tang, Xiaoying
  • Liu, Nana
  • Liang, Huanpeng
  • Zhang, Peiyu
  • Tian, Lu
  • Ren, Yu-Xuan
  • Hong, Peilong
  • Liang, Yi

Abstract

Unlike traditional vortex beams, as a result of the OAM interaction between phase and intensity singularities, a kind of special beams named cyclonic catastrophe vortex beams (CCVBs), not only can exhibit spiral wavefronts and orbital angular momentum (OAM), but also can generate a central bright spot in the focal plane during their autofocusing propagation, despite carrying a vortex phase. These beams can rotate during propagation even without topological charge. Topological charge of the vortex phase significantly influences the propagation characteristics of CCVBs, enabling control over the size and intensity of the central spot by adjusting the OAM to fine-tune the bright solid spot’s properties. Moreover, the central solid spot allows CCVBs to capture polystyrene particles while simultaneously using their side lobes to rotate additional particles around the center. This functionality surpasses that of traditional vortex beams, offering greater flexibility and performance in optical manipulation. Our findings provide deeper insights into the interaction between intensity and phase singularities, opening new avenues for advanced optical manipulation and imaging applications.

Suggested Citation

  • Liu, Shunyu & Tang, Xiaoying & Liu, Nana & Liang, Huanpeng & Zhang, Peiyu & Tian, Lu & Ren, Yu-Xuan & Hong, Peilong & Liang, Yi, 2025. "Tunable OAM interaction between phase and intensity singularities," Chaos, Solitons & Fractals, Elsevier, vol. 199(P1).
    • Handle: RePEc:eee:chsofr:v:199:y:2025:i:p1:s0960077925006034
    DOI: 10.1016/j.chaos.2025.116590
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    References listed on IDEAS

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    1. Mingjin Dai & Chongwu Wang & Fangyuan Sun & Qi Jie Wang, 2024. "On-chip photodetection of angular momentums of vortex structured light," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Min-Cheng Zhong & Xun-Bin Wei & Jin-Hua Zhou & Zi-Qiang Wang & Yin-Mei Li, 2013. "Trapping red blood cells in living animals using optical tweezers," Nature Communications, Nature, vol. 4(1), pages 1-7, June.
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