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用于FLASH2的FEL焦点诊断的波面传感和消光印记的比较

Barbara Keitel, Jaromír Chalupský, Šimon Jelínek

|June 11, 2024

概括

使用哈特曼波浪前传感和切除印记来表征极紫外线 (EUV) 自由电子激光 (FEL) 束显示出极好的一致性. 这证实了哈特曼传感是EUV光束分析的快速,非侵入性工具.

科学领域:

物理物理学物理
光学是什么?光学是什么?光学是什么?
激光科学激光科学

背景情况:

描述极紫外线 (EUV) 自由电子激光 (FEL) 束对于应用至关重要.
现有的光束表征方法可能是复杂的或耗时的.

研究的目的:

为了比较哈特曼波波前线传感与单次射击除印记,用于EUV FEL光束特性.
为了验证哈特曼波面传感沿着光束的可腐性传感的准确性.

主要方法:

在一个聚焦的EUV FEL光束上使用了哈特曼波波前线传感和单次射击废弃印记.
通过Young的双针孔实验来测量横向连贯性.
采用了包含部分连贯性的反向传播算法.

主要成果:

在反向传播的强度档案和废弃印记之间观察到很好的一致性.
该研究验证了哈特曼波纹传感器及其相关软件 (MrBeam) 的准确性.
通过不同波长获得一致的结果.

结论:

哈特曼波线传感是一种高效的,一次性,脉冲分辨率和快速方法,用于EUV束的特征.
这种技术使焦点点的尺寸,形状和光束形状沿着焦点可进行非侵入性确定.
这些发现支持使用哈特曼传感器进行先进的EUV FEL光束分析.

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