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Propagation characteristics of circular-linear edge dislocation beams

机译：圆形线性边缘位错束的传播特性

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摘要

Due to atmospheric turbulence, the wavefront phase and the light intensity distribution would change, and the information carried by beams may be damaged or even lost. Hence, using the non-Kolmogorov spectrum and the generalized Huygens-Fresnel principle, the propagation characteristics of circular-linear edge dislocation beams are studied in this paper. The results show that the light intensity distribution of the beams eventually evolves into the light intensity distribution of Gaussian-like beams. Circular edge dislocation and linear edge dislocation evolve into two pairs of optical vortices. When the beams propagate far enough, two pairs of optical vortices will annihilate. With the decrease of the inner scale of turbulence and the general exponent, and the increase of the general structure constant, the evolution of the beams will be accelerated. The effect of the outer scale of turbulence on the evolution can be negligible. The results obtained provide theoretical guidance for optical communications and spatial modulation of optical fields.
机译：由于大气湍流，波前相和光强度分布将改变，并且梁携带的信息可能损坏甚至丢失。因此，使用非Kolmogorov光谱和广义Huygens-Fresnel原理，本文研究了圆形线性边缘位错束的传播特性。结果表明，光束的光强度分布最终发展到高斯梁的光强度分布。圆形边缘位错和线性边缘位错进入两对光学涡旋。当光束传播得足够远，两对光学涡旋将消灭。随着湍流内部规模的减少和一般指数，以及一般结构常数的增加，梁的进化将加速。外部湍流对进化的影响可以忽略不计。获得的结果为光学场的光通信和空间调制提供了理论指导。

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  • 来源
    《Optical and quantum electronics》 |2021年第6期|310.1-310.11|共11页
  • 作者

    Penghui Gao; Lu Bai;

  • 作者单位

    Department of Electronic Information and Physics Changzhi University Changzhi Shanxi China;

    School of Physics and Optoelectronic Engineering Xidian University Xi'an 710071 Shaanxi China Collaborative Innovation Center of Information Sensing and Understanding at Xidian University Xi'an China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Optical vortices; Propagation; Atmospheric turbulence; Edge dislocation;

    机译：光涡旋;传播;大气湍流;边缘错位;

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