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

Martin Luttmann 1 David Bresteau 1 Thierry Ruchon 1 
1 ATTO - Attophysique
IRAMIS - Institut Rayonnement Matière de Saclay, LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
Abstract : 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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Submitted on : Monday, March 7, 2022 - 1:29:41 PM
Last modification on : Friday, April 1, 2022 - 3:53:12 AM

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Martin Luttmann, David Bresteau, Thierry Ruchon. Pump-Probe Delay Controlled by Laser-dressed Ionization with Isolated Attosecond Pulses. EPJ Web of Conferences, EDP Sciences, 2021, 255, pp.13004. ⟨10.1051/epjconf/202125513004⟩. ⟨cea-03599716⟩

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