Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 10: Diffraction and Coherences (with MO)

A 10.1: Hauptvortrag

Montag, 6. März 2017, 17:00–17:30, N 6

Single-shot coherent diffractive imaging of individual clusters using a high harmonic source — Nils Monserud¹, Daniela Rupp², Bruno Langbehn², Mario Sauppe², Julian Zimmermann², Yevheniy Ovcharenko², Thomas Möller², Fabio Frassetto³, Luca Poletto³, Andrea Trabattoni⁴, Francesca Calgari⁵, Mauro Misoli^4,5, Katharina Sander⁶, Christian Peltz⁶, Marc J.J. Vrakking¹, Thomas Fennel⁶, and •Arnaud Rouzée¹ — ¹Max-Born-Institut, Berlin, Germany — ²Institut für Optik und Atomare Physik, Technische Universität Berlin, Berlin, Germany — ³CNR, Instituto di Fotonica e Nanotecnologie Padova, Padova, Italy — ⁴Department of Physics, Politecnico di Milano, Milano, Italy — ⁵CNR, Instituto di Fotonica e Nanotecnologie Milano, Milano, Italy — ⁶Institut für Physik, Universität Rostock, Rostock, Germany

We present a single-shot coherent diffractive imaging (CDI) experiment based on high harmonic generation of individual He nanodroplets performed with a table-top femtosecond extreme ultraviolet (XUV) light source. Using a laser based HHG source, we are able to demonstrate for the first time the possibility to extract the shape, size, and orientation of free-flying nanoparticles. While most of the recorded diffraction patterns are assigned to the formation of spherical nanodroplets, we observed as well non-point symmetric diffraction patterns which are uniquely assigned to the formation of prolate, pill-shaped He-nanodroplets. Our experiment paves the way towards time-resolved imaging of ultrafast electron motion in individual clusters and nanoparticles with attosecond time resolution.