Photoelectric charge from metallic filters: An online XUV pulse energy diagnostics

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-08-29 DOI:10.1063/5.0213554

Matyáš Staněk, Ondřej Hort, Lucie Jurkovičová, Martin Albrecht, Ondřej Finke, Balázs Nagyillés, Balázs Farkas, Tamás Csizmadia, Tímea Grósz, Andor Körmöczi, Zsolt Divéki, Jaroslav Nejdl

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引用次数: 0

Abstract

Extreme ultraviolet (XUV) radiation is a tool of choice for studying ultrafast processes and atomic physics. Most experiments employing sources of XUV radiation, such as high harmonic generation (HHG) or x-ray lasers, benefit from knowing the number of photons delivered to target in every single shot, because of the possible shot-to-shot pulse fluctuation of the sources. Nonetheless, many setups lack noninvasive XUV pulse energy diagnostics, hindering the simultaneous measurement of pulse energy and utilization of the XUV beam for applications. We present an online XUV pulse energy monitoring method based on the detection of photoelectric charge from thin metallic foil filters transmitting the XUV beam, which can be easily implemented at every pulsed XUV source that includes a high-pass filter system in the form of metallic filters. Consequently, implementation of our method is as straightforward as connecting the filter to an oscilloscope. In the paper, we describe all the physics aspects of such measurement and show the dependence of measured photoelectric charge on the incident pulse energy. To prove the versatility of our approach, we performed this measurement on two different high-flux HHG beamlines, taking consecutive shots at 1 kHz.

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金属滤波器的光电荷：在线 XUV 脉冲能量诊断

极紫外（XUV）辐射是研究超快过程和原子物理的首选工具。大多数采用 XUV 辐射源（如高次谐波发生（HHG）或 X 射线激光器）的实验都需要了解每次发射到目标的光子数量，因为这些辐射源可能会出现逐次发射的脉冲波动。然而，许多设置缺乏非侵入式 XUV 脉冲能量诊断，妨碍了同时测量脉冲能量和利用 XUV 光束进行应用。我们提出了一种在线 XUV 脉冲能量监测方法，该方法基于从传输 XUV 光束的薄金属箔滤波器中检测光电荷，可以在每个包含金属滤波器形式的高通滤波器系统的脉冲 XUV 源上轻松实现。因此，只需将滤波器连接到示波器上，就能直接实施我们的方法。在本文中，我们描述了此类测量的所有物理方面，并展示了所测得的光电电荷与入射脉冲能量的关系。为了证明我们的方法的通用性，我们在两条不同的高通量 HHG 光束线上进行了这种测量，以 1 kHz 的频率连续拍摄。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.