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<p>Analytical expressions for cross-spectral density matrix of a&#xa0;partially coherent vector beam carrying the elliptical vortex phase (i.e., partially coherent elliptical vortex vector beam, PCEVV beam) propagating through a&#xa0;turbulent atmosphere along an uplink path are obtained with the help of extended Huygens-Fresnel principle. Effects of beam parameters and turbulence parameters on evolution behaviors of PCEVV beam are studied in detail by numerical simulations. Our findings indicate that the PCEVV beam will self-rotate and self-split in turbulence, and atmospheric turbulence will induce the generation and annihilation of coherent vortices. Studies for degree of polarization (DOP) and polarization power imply that the beam depolarization can be dropped by increasing topological charge and initial correlation length as well as reducing zenith angle. It also can be found that evolution of state of polarization (SOP) mainly depends on ellipticities of beam. Our results hold great significance for atmospheric polarization imaging and measurement, free-space optical communications.</p>

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Evolution behavior of a partially coherent vector beam carrying the elliptical vortex phase propagating in non-uniform turbulent atmosphere

  • 期刊论文

  • 发表日期：

    2026年6月16日

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  • Yonggen Xu,
  • Bocheng Li,
  • Fenghe Tian,
  • Kai Huang,
  • Yuqiang Li

摘要

Analytical expressions for cross-spectral density matrix of a partially coherent vector beam carrying the elliptical vortex phase (i.e., partially coherent elliptical vortex vector beam, PCEVV beam) propagating through a turbulent atmosphere along an uplink path are obtained with the help of extended Huygens-Fresnel principle. Effects of beam parameters and turbulence parameters on evolution behaviors of PCEVV beam are studied in detail by numerical simulations. Our findings indicate that the PCEVV beam will self-rotate and self-split in turbulence, and atmospheric turbulence will induce the generation and annihilation of coherent vortices. Studies for degree of polarization (DOP) and polarization power imply that the beam depolarization can be dropped by increasing topological charge and initial correlation length as well as reducing zenith angle. It also can be found that evolution of state of polarization (SOP) mainly depends on ellipticities of beam. Our results hold great significance for atmospheric polarization imaging and measurement, free-space optical communications.