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<p>This investigation evaluates a&#xa0;multi-rod end-pumped solar laser architecture. The system utilizes four Nd:YAG rods with individual dimensions of 5.2 mm in diameter and 34 mm in length. ZEMAX® and LASCAD™ platforms provided the simulation framework. The multi-stage concentration strategy integrates four large primary Off-Axis Parabolic Mirrors, four smaller redirection off axis parabolic mirrors, and two fused silica aspheric lenses. While the collection efficiency measured 24.13 W/m<sup>2</sup> in this specific configuration, the multimode laser output power reached 96.51 W. The multi-rod arrangement optimizes absorption efficiency and beam brightness. Furthermore, strategic distribution of solar flux across the four gain media effectively minimizes thermal loading within the resonator. These refinements maximize laser output stability.</p>

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Design and performance analysis of an end-Pumped solar nd:YAG laser system using four-Rod configuration and off-Axis parabolic mirrors

  • 期刊论文

  • 发表日期：

    2026年7月9日

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  • Imene Kouicem,
  • Belkhir Tioua

摘要

This investigation evaluates a multi-rod end-pumped solar laser architecture. The system utilizes four Nd:YAG rods with individual dimensions of 5.2 mm in diameter and 34 mm in length. ZEMAX® and LASCAD™ platforms provided the simulation framework. The multi-stage concentration strategy integrates four large primary Off-Axis Parabolic Mirrors, four smaller redirection off axis parabolic mirrors, and two fused silica aspheric lenses. While the collection efficiency measured 24.13 W/m2 in this specific configuration, the multimode laser output power reached 96.51 W. The multi-rod arrangement optimizes absorption efficiency and beam brightness. Furthermore, strategic distribution of solar flux across the four gain media effectively minimizes thermal loading within the resonator. These refinements maximize laser output stability.