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<b>Abstract</b>— <p>The experimental results on ablation of steel targets by a scanning beam of nanosecond pulsed laser radiation are reported. The power density dependences of the ablation depth and energy efficiency in the power density range of <i>q</i> = 2 × 10<sup>8</sup>–7 × 10<sup>8</sup> W/cm<sup>2</sup> are determined. It is established that, under irradiation of carbon steel targets during ablation, the explosive boiling (phase explosion) mechanism is implemented, which is characterized using the introduced concept of explosion force <i>P</i><sub>e</sub>. The values of <i>P</i><sub>e</sub> determined from the published data for different materials are presented. The dependence of the ablation depth on the interval between pulses is established and the physical processes causing the ablation course are discussed.</p>

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Irradiation Modes and Phase Explosion during Ablation of Steel Targets with a Scanning Beam of Pulsed Radiation of a Yb:YAG Laser of Nanosecond Duration

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • S. B. Mikhailov,
  • S. G. Gorny,
  • N. V. Zhukov

摘要

Abstract—

The experimental results on ablation of steel targets by a scanning beam of nanosecond pulsed laser radiation are reported. The power density dependences of the ablation depth and energy efficiency in the power density range of q = 2 × 108–7 × 108 W/cm2 are determined. It is established that, under irradiation of carbon steel targets during ablation, the explosive boiling (phase explosion) mechanism is implemented, which is characterized using the introduced concept of explosion force Pe. The values of Pe determined from the published data for different materials are presented. The dependence of the ablation depth on the interval between pulses is established and the physical processes causing the ablation course are discussed.