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Versatile apparatus for attosecond metrology and spectroscopy

机译：适用于阿秒计量学和光谱学的多功能仪器

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摘要

We present the AS-2 Attosecond Beamline at the Joint Laboratory for Attosecond Physics of the Max-Planck-Institut für Quantenoptik and Ludwig-Maximilians-Universität for time resolved pump/probe experiments with attosecond resolution. High harmonic generation and subsequent filtering of the generated extreme ultraviolet (XUV) continuum by means of metal filters and XUV multilayer mirrors serve for the generation of isolated attosecond laser pulses. After high harmonic generation, the remaining fundamental laser pulse is spatially separated from the attosecond XUV pulse, to what is to our knowledge for the first time, by means of a perforated mirror in a Mach–Zehnder interferometer. Active stabilization of this interferometer guarantees the necessary temporal resolution for tracking attosecond dynamics in real time. As a proof-of-principle, photoelectron streaking experiments are performed and experimental techniques for their realization are summarized. Finally we highlight the potential of the presented beamline system for future experiments in comparison with previously demonstrated attosecond beamlines.
机译：我们在Max-Planck-InstitutfürQuantenoptik和Ludwig-Maximilians-Universität阿托秒物理学联合实验室中展示AS-2阿托秒束线，用于具有阿秒分辨率的时间分辨泵/探针实验。高次谐波的产生以及随后通过金属滤光片和XUV多层反射镜对产生的极紫外（XUV）连续体的过滤用于产生孤立的阿秒激光脉冲。在产生高次谐波之后，剩余的基本激光脉冲在空间上与阿秒XUV脉冲分离，这是我们首次了解到，这是通过马赫曾德尔干涉仪中的穿孔镜实现的。干涉仪的主动稳定保证了必要的时间分辨率，可实时跟踪阿秒动态。作为原理的证明，进行了光电子条纹实验，并总结了实现它们的实验技术。最后，与先前演示的阿秒束线相比，我们重点介绍了所提出的束线系统在未来实验中的潜力。

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