使用光学发射光谱学在10kHz的空气中激光丝诱导等离子体的表征
Optics express
|December 19, 2025
概括
高功率的超快激光器可在10kHz的频率下进行空气线索. 光学发射光谱学揭示了等离子体动态,气体和电子温度以及物种衰变,这对于理解高重复率激光诱导等离子体至关重要.
科学领域:
- 等离子体物理学的物理学
- 激光-物质相互作用
- 频谱学是一种光谱学.
背景情况:
- 高功率的基于Yb的超快激光系统以超过1kHz的重复频率促进空气线程.
- 高重复率激光丝中的积累效应需要详细描述等离子体参数和后照动力学.
研究的目的:
- 为了研究大气空气激光丝中的等离子体参数的纳秒动态.
- 在10kHz的重复率下分析气体温度,电子温度,物种衰变时间和电子密度.
- 为了阐明光发射中的分子激发机制.
主要方法:
- 使用光学发射光谱 (OES) 进行诊断.
- 采用高平均功率的5秒激光系统,运行在10kHz.
- 分析了发射波段的振动分布和时间行为.
主要成果:
- 测量了气体和电子温度的纳秒动态.
- 确定特定物种的衰变时间和电子密度.
- 基于振动分布的光排放的衍生分子激发机制.
结论:
- 光学发射光谱学提供了一种整体的方法来表征激光丝诱导的等离子唤醒.
- 这些发现对于理解高重复率超快激光应用中的等离子体动力学具有重要意义.
- 这种诊断技术补充了用于详细等离子体分析的光学探针方法.
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