在高功率激光设施中从合金生成的激光诱导颗粒的表征
Xinxiang Miao1, Guorui Zhou1, Qihua Zhu1
1Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China.
Materials (Basel, Switzerland)
|December 9, 2023
概括
控制高功率激光系统中的气溶颗粒污染至关重要. 这项研究揭示了合金表面的地下杂质是颗粒的主要来源,激光照射预处理提高了清洁性.
科学领域:
- 材料科学 材料科学 材料科学
- 光学工程是指光学工程.
- 表面科学是一门学科.
背景情况:
- 气溶颗粒污染会降低高功率激光设备中的光学元件,降低损坏抵抗力和使用寿命.
- 流浪光是污染粒子的主要来源,需要对粒子生成动态进行研究.
研究的目的:
- 研究来自合金表面的激光诱导颗粒生成的机制和动态.
- 了解在激光照射下表面组成的改变.
- 建立粒子弹射的理论模型.
主要方法:
- 在激光作用下对粒子生成和表面修饰的实验研究.
- 应用各种表面分析技术.
- 开发一个结合粘附和激光清洗力的理论模型.
主要成果:
- 粒子生成和损伤的值能量分别确定为大约0.1 J/cm2和0.2 J/cm2.
- 地下杂质被确定为主要颗粒来源;粘附密度与表面粗度相关.
- 粒子生成涉及温度升高,相位变化,冲击扩散和粘附.
结论:
- 合金表面的激光照射预处理对于提高高功率激光系统的清洁度至关重要.
- 了解粒子生成动态为优化高能激光系统运行提供了必要的数据.
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