Scholarlink

<p>Auto-focusing&#xa0;beams can effectively mitigate orbital angular momentum (OAM) crosstalk in atmospheric turbulence. In this paper, we focus on the effect of the chirp factor on the crosstalk mitigation of chirped perfect Laguerre-Gaussian beam (CPLGB) based on the propagation model of CPLGB. The results demonstrate that a positive first-order chirp factor can significantly promote the auto-focusing of CPLGB, and increasing it can effectively mitigate the intermodal crosstalk of OAM modes in atmospheric turbulence, whereas a positive second-order chirp factor has a relatively weak effect on them. By comparing with Bessel Gaussian beam, perfect Laguerre-Gaussian beam, and perfect optical vortex beam, the CPLGB shows superior turbulence resistance when transmitted in atmospheric turbulence. Our results will be useful for optimizing the performance of free-space optical&#xa0;(FSO) communication systems with CPLGBs.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Controlling auto-focusing chirped perfect Laguerre-Gaussian beam to mitigate crosstalk in atmospheric turbulence

  • 期刊论文

  • 发表日期：

    2025年4月3日

查看全文
  • Yangbin Ma,
  • Xinguang Wang,
  • Yangbo Shen,
  • Ben Zhao,
  • Le Wang,
  • Shengmei Zhao

摘要

Auto-focusing beams can effectively mitigate orbital angular momentum (OAM) crosstalk in atmospheric turbulence. In this paper, we focus on the effect of the chirp factor on the crosstalk mitigation of chirped perfect Laguerre-Gaussian beam (CPLGB) based on the propagation model of CPLGB. The results demonstrate that a positive first-order chirp factor can significantly promote the auto-focusing of CPLGB, and increasing it can effectively mitigate the intermodal crosstalk of OAM modes in atmospheric turbulence, whereas a positive second-order chirp factor has a relatively weak effect on them. By comparing with Bessel Gaussian beam, perfect Laguerre-Gaussian beam, and perfect optical vortex beam, the CPLGB shows superior turbulence resistance when transmitted in atmospheric turbulence. Our results will be useful for optimizing the performance of free-space optical (FSO) communication systems with CPLGBs.