Volume 16 Issue 5
Sep.  2023
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LIAO Sai, CHENG Ke, HUANG Hong-wei, YANG Ceng-hao, LIANG Meng-ting, SUN Wang-xuan. The Poynting vectors, spin and orbital angular momentums of uniformly polarized cosh-Pearcey-Gauss beams in the far zone[J]. Chinese Optics, 2023, 16(5): 1195-1205. doi: 10.37188/CO.EN.2022-0022
Citation: LIAO Sai, CHENG Ke, HUANG Hong-wei, YANG Ceng-hao, LIANG Meng-ting, SUN Wang-xuan. The Poynting vectors, spin and orbital angular momentums of uniformly polarized cosh-Pearcey-Gauss beams in the far zone[J]. Chinese Optics, 2023, 16(5): 1195-1205. doi: 10.37188/CO.EN.2022-0022

The Poynting vectors, spin and orbital angular momentums of uniformly polarized cosh-Pearcey-Gauss beams in the far zone

doi: 10.37188/CO.EN.2022-0022
Funds:  Supported by Natural Science Foundation of Sichuan Province (No. 23NSFSC1097)
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  • Author Bio:

    Liao Sai (1998—), male, was born in Mianyang, Sichuan Province. M.E, College of Optoelectronic Engineering, Chengdu University of Information Technology. His research interests are on vector structure of catastrophe beams. E-mail: 1399417658@qq.com

    Cheng Ke (1979—), male, was born in Jianli, Hubei Province. Ph.D, Professor, College of Optoelectronic Engineering, Chengdu University of Information Technology. His research interests are on propagation and control of High-Power Lasers. E-mail: ck@cuit.edu.cn

  • Corresponding author: ck@cuit.edu.cn
  • Received Date: 11 Nov 2022
  • Rev Recd Date: 29 Dec 2022
  • Accepted Date: 30 Jan 2023
  • Available Online: 28 Feb 2023
  • We propose cosh-Pearcey-Gauss beams with uniform polarization, which are mainly modulated by a hyperbolic cosine function (n, Ω) and the angles related to uniform polarization (α, δ). Based on angular spectrum representation and the stationary phase method, the Poynting vector, Spin Angular Momentums (SAM) and Orbital Angular Momentums (OAMs) in the far zone are studied. The results show that a larger n or Ω in the hyperbolic cosine function can partition the longitudinal Poynting vectors, SAMs and OAMs into more multi-lobed parabolic structures. Different polarizations described by (α, δ) can distinguish their Poynting vectors and angular momentums between the TE and TM terms, though this does not affect the patterns of the whole beam. Furthermore, the weight of the left and right sides of longitudinal Poynting vectors, SAMs and OAMs in TE and TM terms can be modulated by left-handed or right-handed elliptical polarization, respectively. The results in this paper may be useful for information storage and polarization imaging.

     

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