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A: Fachverband Atomphysik

A 20: Interaction with strong or short laser pulses II

A 20.6: Vortrag

Mittwoch, 25. März 2015, 12:30–12:45, C/HSW

In situ characterization of few-cycle laser pulses in transient absorption spectroscopy — •Alexander Blättermann¹, Chrsitian Ott^1,2, Andreas Kaldun¹, Thomas Ding¹, Martin Laux¹, Veit Stooß¹, Marc Rebholz¹, Maximilian Hartmann¹, and Thomas Pfeifer¹ — ¹Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg , Germany — ²Chemistry Department, University of California, 94720 Berkeley CA, United States

We demonstrate a method that allows to extract the pulse duration and intensity of few-cycle laser pulses directly from a measured extreme ultraviolet transient-absorption spectrum. Since we analyze the signature of the laser pulse interacting with the spectroscopy target, the pulse is characterized in situ. By doing so, we combine laser pulse characterization and strong-field driven quantum dynamics measurement in a single experiment. The precise knowledge of the driving laser pulse is important to fully understand the highly nonlinear optical response of quantum systems to strong laser fields.