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  • Received: Jul. 15, 2020

    Accepted: Sep. 15, 2020

    Posted: Dec. 1, 2020

    Published Online: Nov. 23, 2020

    The Author Email: Wei Hongyan (why_1221@126.com)

    DOI: 10.3788/AOS202040.2401001

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    Hongyan Wei, Jielin Yan, Peng Jia, Dongmei Cai. Spiral Phase Spectrum of Focused Bessel Beams in Atmospheric Turbulence Channel[J]. Acta Optica Sinica, 2020, 40(24): 2401001

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Acta Optica Sinica, Vol. 40, Issue 24, 2401001 (2020)

Spiral Phase Spectrum of Focused Bessel Beams in Atmospheric Turbulence Channel

Wei Hongyan*, Yan Jielin, Jia Peng, and Cai Dongmei

Author Affiliations

  • Institute of Physics and Optoelectronics Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China

Abstract

When the vortex beams propagate in the atmosphere, the turbulence effect causes the crosstalk of its orbital angular momentum, which reduces the transmission quality. In order to effectively reduce the influence of turbulence on the propagation of light waves in the atmosphere and explore the measures to slow down the turbulence effect, the influences of anisotropic non-Kolmogorov atmospheric turbulence and beam parameters on the spiral spectrum broadening and receiving power of focused Bessel beams are studied by using the spiral spectrum analysis theory. The results show that the wavelength, topological charge, waist radius, width parameters, turbulence intensity, anisotropy, and internal and external scales all affect the received power. In addition, the spiral spectrum distribution of focused and collimated Bessel beams is comparably studied by using multi-layer phase screen simulation method. It is concluded that the focused Bessel beam has higher receiving power and lower crosstalk power.

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