相关实验视频
Updated: Jul 9, 2025
10:17
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
11.5K
概括
这项研究展示了一种高功率的Ytterbium-doped加多 tungstate (Yb:KGW) 再生放大器,实现了创纪录的33.7W平均功率. 这种先进的激光系统提供可调节的光谱成型,并保持接近衍射限制的光束质量.
科学领域:
- 激光物理 激光物理
- 材料科学 材料科学 材料科学
背景情况:
- 固态激光对于各种科学和工业应用至关重要.
- 添加材料在近红外光谱中提供高效的激光操作.
- 再生放大器 (RA) 对于产生高能超短激光脉冲至关重要.
研究的目的:
- 为了演示一个高功率的再生放大器 (RA) 使用双片Ytterbium-doped加 tungstate (Yb:KGW) 晶体.
- 为了实现高平均输出功率和高效的光学到光学转换.
- 调查光谱成形和具有良好的光束质量的超短脉冲生成的潜力.
主要方法:
- 开发一个双板Yb:KGW再生放大器配置.
- 优化激光参数以在各种重复率下实现高平均功率.
- 输出功率的表征,脉冲持续时间,光谱特性和光束质量.
主要成果:
- 在75-200 kHz的重复率下达到33.7W的最大平均功率,光学到光学转换效率为51.4%.
- 在最大输出功率时获得的205 fs的压缩脉冲持续时间.
- 演示了光谱成型,产生4.5纳米RMS带宽和159 fs压缩脉冲持续时间在20W输出功率.
- 由于有效的热管理,几乎保持了衍射有限的光束质量 (M2 < 1.20).
结论:
- 双板Yb:KGW再生放大器代表了高功率激光技术的重大进步.
- 该系统提供了高平均功率,可调节的光谱成型和出色的光束质量的独特组合.
- 这项技术对于需要高强度超短脉冲的应用具有前景.
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