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<p>Water-jet guided laser is a processing technology that can achieve high precision and high surface quality. The core of the Water-jet guided laser processing technology lies in the coupling process of laser and water beam, which makes the design of the optical path conduction process in this process very important. This paper investigates the changes in light beam conduction parameters during the laser-water beam coupling process in water-jet guided lasers, when the focus is at different positions. Determine the range of reflection angles at which total reflection occurs in the water beam based on the physical optics theory. Establish the light beam conduction parameters-total reflection angle model under ideal condition, axial deviation condition, and radial deviation condition, and analyze the influence of water beam radius and total reflection angle on the light beam conduction parameters. Through conducting ray optics finite element simulations, the influence of the change in focus position under different conditions on the laser-water beam coupling process is visually demonstrated. By comparing the simulation model with the theoretical model, the consistency between the two is verified, providing a preliminary foundation for controlling the light beam focusing process and setting the initial laser beam diameter.</p>

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Research on the Coupling Characteristics of Laser-Water Beam under Ideal and Deviating Conditions

  • 期刊论文

  • 发表日期：

    2026年7月1日

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  • Daxun Yue,
  • Dawei Song,
  • Yinghou Jiao,
  • Weinan Gao,
  • Xiang Zhang,
  • Runchao Zhao,
  • Yanling Lu,
  • Guangbin Yu,
  • Sergei Chizhik,
  • Lushchik Pavel

摘要

Water-jet guided laser is a processing technology that can achieve high precision and high surface quality. The core of the Water-jet guided laser processing technology lies in the coupling process of laser and water beam, which makes the design of the optical path conduction process in this process very important. This paper investigates the changes in light beam conduction parameters during the laser-water beam coupling process in water-jet guided lasers, when the focus is at different positions. Determine the range of reflection angles at which total reflection occurs in the water beam based on the physical optics theory. Establish the light beam conduction parameters-total reflection angle model under ideal condition, axial deviation condition, and radial deviation condition, and analyze the influence of water beam radius and total reflection angle on the light beam conduction parameters. Through conducting ray optics finite element simulations, the influence of the change in focus position under different conditions on the laser-water beam coupling process is visually demonstrated. By comparing the simulation model with the theoretical model, the consistency between the two is verified, providing a preliminary foundation for controlling the light beam focusing process and setting the initial laser beam diameter.