中国物理B ›› 2024, Vol. 33 ›› Issue (6): 64201-064201.doi: 10.1088/1674-1056/ad2bf4

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Robust autofocusing propagation in turbulence

Na-Na Liu(刘娜娜)1, Liu Tan(谭柳)1, Kai-Jian Chen(陈凯健)1, Pei-Long Hong(洪佩龙)2, Xiao-Ming Mo(莫小明)1, Bing-Suo Zou(邹炳锁)1, Yu-Xuan Ren(任煜轩)3, and Yi Liang(梁毅)1,†   

  1. 1 Guangxi Key Laboratory for Relativistic Astrophysics, Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China;
    2 School of Mathematics and Physics, Anqing Normal University, Anqing 246133, China;
    3 Institute for Translational Brain Research, MOE Frontiers Center for Brain Science, Fudan University, Shanghai 200032, China
  • 收稿日期:2023-12-22 修回日期:2024-02-05 接受日期:2024-02-22 出版日期:2024-06-18 发布日期:2024-06-18
  • 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), Guangxi Natural Science Foundation (Grant Nos. 2020GXNSFAA297041 and 2023JJA110112), Innovation Project of Guangxi Graduate Education (Grant No. YCSW2023083), and Sichuan Science and Technology Program (Grant No. 2023NSFSC0460).

Robust autofocusing propagation in turbulence

Na-Na Liu(刘娜娜)1, Liu Tan(谭柳)1, Kai-Jian Chen(陈凯健)1, Pei-Long Hong(洪佩龙)2, Xiao-Ming Mo(莫小明)1, Bing-Suo Zou(邹炳锁)1, Yu-Xuan Ren(任煜轩)3, and Yi Liang(梁毅)1,†   

  1. 1 Guangxi Key Laboratory for Relativistic Astrophysics, Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China;
    2 School of Mathematics and Physics, Anqing Normal University, Anqing 246133, China;
    3 Institute for Translational Brain Research, MOE Frontiers Center for Brain Science, Fudan University, Shanghai 200032, China
  • Received:2023-12-22 Revised:2024-02-05 Accepted:2024-02-22 Online:2024-06-18 Published:2024-06-18
  • Contact: Yi Liang E-mail:liangyi@gxu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11604058), Guangxi Natural Science Foundation (Grant Nos. 2020GXNSFAA297041 and 2023JJA110112), Innovation Project of Guangxi Graduate Education (Grant No. YCSW2023083), and Sichuan Science and Technology Program (Grant No. 2023NSFSC0460).

摘要: Turbulence in complex environments such as the atmosphere and biological media has always been a great challenge to the application of beam propagation in optical communication, optical trapping and manipulation. To overcome this challenge, this study comprehensively investigates the robust propagation of traditional Gaussian and autofocusing beams in turbulent environments. In order to select stable beams that exhibit high intensity and high field gradient at the focal position in complex environments, Kolmogorov turbulence theory is used to simulate the propagation of beams in atmospheric turbulence based on the multi-phase screen method. We systematically analyze the intensity fluctuations, the variation of the coherence factor and the change in the scintillation index with propagation distance. The analysis reveals that the intensity fluctuations of autofocusing beams are significantly smaller than those of Gaussian beams, and the coherence of autofocusing beams is better than that of Gaussian beams under turbulence. Moreover, autofocusing beams exhibit less oscillation than Gaussian beams, indicating that autofocusing beams propagate in complex environments with less distortion and intensity fluctuation. Overall, this work clearly demonstrates that autofocusing beams exhibit higher stability in propagation compared with Gaussian beams, showing great promise for applications such as optical trapping and manipulation in complex environments.

关键词: propagation, beams, autofocusing, turbulence

Abstract: Turbulence in complex environments such as the atmosphere and biological media has always been a great challenge to the application of beam propagation in optical communication, optical trapping and manipulation. To overcome this challenge, this study comprehensively investigates the robust propagation of traditional Gaussian and autofocusing beams in turbulent environments. In order to select stable beams that exhibit high intensity and high field gradient at the focal position in complex environments, Kolmogorov turbulence theory is used to simulate the propagation of beams in atmospheric turbulence based on the multi-phase screen method. We systematically analyze the intensity fluctuations, the variation of the coherence factor and the change in the scintillation index with propagation distance. The analysis reveals that the intensity fluctuations of autofocusing beams are significantly smaller than those of Gaussian beams, and the coherence of autofocusing beams is better than that of Gaussian beams under turbulence. Moreover, autofocusing beams exhibit less oscillation than Gaussian beams, indicating that autofocusing beams propagate in complex environments with less distortion and intensity fluctuation. Overall, this work clearly demonstrates that autofocusing beams exhibit higher stability in propagation compared with Gaussian beams, showing great promise for applications such as optical trapping and manipulation in complex environments.

Key words: propagation, beams, autofocusing, turbulence

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

  • 42.25.Bs
42.25.Dd (Wave propagation in random media) 42.68.Ay (Propagation, transmission, attenuation, and radiative transfer) 42.25.Fx (Diffraction and scattering)