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<p>In this paper, propagation characters of a new kind of laser beam profile named finite cosh-Airy (Ch-Ai) beams passing through collisionless plasma is reported. The coupled differential equations for beam-width parameters are derived under Wentzel–Kramers-Brillouin (WKB) and paraxial approximations within the skeleton of parabolic equation approach. The effect of control parameters of cosh and Airy parts of Ch-Ai beams on self-focusing in collisionless plasma is specifically inspected. The influence of decentred and modulation parameters on the variation of beam-width parameters with dimensionless propagation distance of Ch-Ai beams in collisionless plasma is graphically studied in more detail. It is found that Ch-Ai beams with lower decentred parameter and higher modulation parameter confirm efficient self-focusing in plasma. This enables the need of more exploration of finite Ch-Ai beams in the fields of laser-plasma interaction.</p>

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Propagation characters of finite cosh-Airy laser beams passing through collisionless plasmas

  • 期刊论文

  • 发表日期：

    2025年1月5日

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  • V. S. Pawar,
  • P. P. Nikam,
  • B. D. Vhanmore,
  • K. Y. Khandale,
  • P. P. Patil,
  • M. V. Takale,
  • S. D. Patil

摘要

In this paper, propagation characters of a new kind of laser beam profile named finite cosh-Airy (Ch-Ai) beams passing through collisionless plasma is reported. The coupled differential equations for beam-width parameters are derived under Wentzel–Kramers-Brillouin (WKB) and paraxial approximations within the skeleton of parabolic equation approach. The effect of control parameters of cosh and Airy parts of Ch-Ai beams on self-focusing in collisionless plasma is specifically inspected. The influence of decentred and modulation parameters on the variation of beam-width parameters with dimensionless propagation distance of Ch-Ai beams in collisionless plasma is graphically studied in more detail. It is found that Ch-Ai beams with lower decentred parameter and higher modulation parameter confirm efficient self-focusing in plasma. This enables the need of more exploration of finite Ch-Ai beams in the fields of laser-plasma interaction.