Attosecond resolution from free running interferometric measurements

Krüger, Constantin; Fuchs, Jaco; Cattaneo, Laura; Keller, U.

doi:10.1364/oe.391791

Cited by 6 publications

(2 citation statements)

References 42 publications

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“…FEL, however, cannot provide sub-cycle synchronization between the XUV and IR field. It was shown in the case of multiple harmonics that an analysis of the correlation between the different sidebands fluctuations provides a measurement of the temporal jitter [12,13]. We believe that a similar post-treatment can be made when the X-ray field consists of IAP.…”

Section: Discussionmentioning

confidence: 81%

Pump-Probe Delay Controlled by Laser-dressed Ionization with Isolated Attosecond Pulses

2021

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In a recent work [1], we demonstrated how laser-dressed ionization can be harnessed to control with attosecond accuracy the time delay between an extreme-ultraviolet (XUV) attosecond pulse train and an infrared (IR) femtosecond pulse. In this case, the comb-like photoelectron spectrum obtained by ionizing a gas target with the two superimposed beams exhibits peaks oscillating with the delay. Two of them can be found to oscillate in phase quadrature, allowing an optimal measurement and stabilization of the delay over a large range. Here we expand this technique to isolated attosecond pulses, by taking advantage of the delay-modulation of attosecond streaking traces. Although the photoelectron spectrum contains no peaks in that case, it is possible to reconstruct the pump-probe delay by simply monitoring the mean energy of the spectrum and the amplitude at this energy. In general, we find that active delay stabilization based on laser-dressed ionization is possible as long as the XUV pulses are chirped.

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Section: Discussionmentioning

confidence: 81%

Pump-Probe Delay Controlled by Laser-dressed Ionization with Isolated Attosecond Pulses

2021

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“…Another way to visualize the effect of the LIZARD stabilization is to look at the correlation between two sidebands intensities (Fig. 7), similarly to diagnosis performed with FEL [32] and the recently developed TURTLE [33]. Since the pump-probe delay is now precisely adjusted, the stabilization results in a squeezing of the data points around the phase set-points.…”

Section: B Stabilized Pump-probe Delay Scansmentioning

confidence: 99%

In situ sub-50 attosecond active stabilization of the delay between infrared and extreme ultraviolet light pulses

Luttmann,

Bresteau,

Hergott

et al. 2020

Preprint

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The blooming of attosecond science (1 as = 10 −18 s) has raised the need to exquisitely control the delay between two ultrashort light pulses, one of them being intense and in the visible spectral range, while the second is weak and in the Extreme Ultra-Violet spectral range. Here we introduce a robust technique, named LIZARD (Laser-dressed IoniZation for the Adjustment of the pump-pRobe Delay), allowing an active stabilization of this pump-probe delay. The originality of the method lies in an error signal calculated from a two-photon photoelectron signal obtained by photoionizing a gas target in an electronic spectrometer with the two superimposed beams. The modulation of sidebands in phase quadrature allows us to perform an in situ measurement of the pump-probe phase, and to compensate for fluctuations with an uniform noise sensitivity over a large range of delays. Despite an interferometer length of several meters, we achieved a long term stability of 28 as RMS over hours. This method could be applied to the stabilization of other types of two-color interferometers, provided that one of the propagating beams is capable of photoionizing a target.

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