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Updated: Jun 16, 2025

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基于双晶Yb:CALGO配置的高功率再生放大器

Zhihua Tu, Jie Guo, Zebiao Gan

|June 14, 2025

概括

本研究介绍了一种高功率Yb:CALGO再生放大器 (RA),其输出功率为38W. 双晶体设计最大限度地减少了热问题,以实现稳定,高质量的激光性能.

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:

高功率激光器中的热效应限制了性能.
Yb:CALGO是超快激光器的一个有前途的增益介质.

研究的目的:

开发一个高平均功率的双晶Yb:CALGO再生放大器 (RA).
为了减轻热效应并实现高光束质量.

主要方法:

在 Yb:CALGO RA. 中使用了双晶体配置.
采用有效的热管理和热不敏感的腔体.
在TEM₀₀模式下操作放大器.

主要成果:

在1054nm时实现了42.5W的连续输出功率.
在1043nm获得38W的放大输出功率,脉冲宽度为290.8 fs.
测量了接近衍射限制的光束质量 (M² < 1.11).

结论:

双晶Yb:CALGO RA有效地抑制了热透镜的发生.
高平均功率和优良的光束质量可以通过这种配置实现.
这项工作推进了高功率超快激光技术.

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