Rostock 2019 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 19: Cluster I (joint session A/MO)

A 19.5: Vortrag

Mittwoch, 13. März 2019, 15:30–15:45, S HS 3 Physik

Time-resolved coherent diffraction imaging of helium nanodroplets in free flight with intense high-harmonic XUV-pulses — •J Zimmermann¹, K. Kolatzki¹, N. Monserud¹, M. Sauppe¹, B. Schütte¹, R. M. Tanyag¹, M.J.J. Vrakking¹, A. Rouzee¹, J. Jordan², B. Langbehn², A. Ulmer², T. Möller², B. Kruse³, T. Fennel³, and D. Rupp¹ — ¹MBI Berlin — ²IOAP, TU Berlin — ³Univ. Rostock

Coherent diffraction imaging (CDI) of single particles in free flight enables studying the structural composition of fragile nano-scaled matter. Such experiments demand high-intensity extreme ultraviolet or X-ray light pulses, until recently only achievable at large-scale free-electron laser (FEL) facilities. We have demonstrated [1] that high harmonic generation (HHG) sources can be used for single-shot single-particle CDI with great prospects for time-resolved experiments due to high stability and extremely short pulse durations. Here we report on the first time-resolved CDI measurements using a HHG laser system on helium nanodroplets in an IR pump - XUV probe scheme. We obtained bright multicolor diffraction patterns in a setup that allowed for few femtoseconds time-resolution. First results of the ongoing analysis will be presented and discussed. [1] Rupp et al., Nat.Com.8,493(2017)