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M2-factor of a partially coherent Lorentz–Gauss beam in a turbulent atmosphere

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Abstract

Based on the second-order moments of partially coherent beams in atmospheric turbulence, the analytical beam propagation factor of a partially coherent Lorentz–Gauss beam in a turbulent atmosphere is derived. As a special case of the general formula, the beam propagation factor of a partially coherent Lorentz beam in a turbulent atmosphere is also presented. By using the derived analytical expression, the beam propagation factor is illustrated and analyzed with numerical examples, and the influences of the beam parameters a j and w 0j , the coherent parameter τ j , the axial propagation distance z, the structure constant \(C_{n}^{2}\), and the inner scale turbulence l 0 on the beam propagation factor are also discussed in detail.

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Authors and Affiliations

  1. School of Sciences, Zhejiang Forestry University, Lin’an, 311300, Zhejiang Province, China

    G. Zhou & X. Chu

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  1. G. Zhou
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  2. X. Chu
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Correspondence to G. Zhou.

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Zhou, G., Chu, X. M2-factor of a partially coherent Lorentz–Gauss beam in a turbulent atmosphere. Appl. Phys. B 100, 909–915 (2010). https://doi.org/10.1007/s00340-010-4046-2

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  • DOI: https://doi.org/10.1007/s00340-010-4046-2

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