Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 33: Interaction with strong or short laser pulses III
A 33.1: Hauptvortrag
Donnerstag, 3. März 2016, 11:00–11:30, f303
Imaging single nanoparticles with intense XUV pulses from a high-order harmonic generation source — •D. Rupp1, B. Langbehn1, M. Sauppe1, N. Monserud2, A. Ulmer1, J. Zimmermann1, T. Möller1, F. Frassetto3, A. Trabattoni3, F. Calegari3, M. Vrakking2, and A. Rouzee2 — 1TU Berlin — 2Max-Born-Institut, Berlin — 3Politecnico di Milano
Single shot imaging of individual nanoparticles in free flight has become possible using highly intense, femtosecond short-wavelength pulses from free-electron-lasers (FELs). This method allows the study of transient and rare phenomena in gas-phase nanosized objects, such as particle shape evolutions during growth processes, non-equilibrium melting phenomena or ultrafast changes of optical or electronic properties after pulsed laser excitation. Up to now, FELs were seen as the only light sources with this desired ultrafast imaging capability. With only four X-FEL-facilities worldwide, this exciting field of research has so far been constrained to a few experiments only.
For the first time we performed single-shot imaging of individual gas-phase nanoparticles with a table-top light source. Single suprafluid helium nanodroplets were imaged using intense XUV pulses from high-order harmonic generation (HHG) with up to 1µJ pulse energy. The high-quality images generated in this proof-of-principle experiment promote exciting future prospects such as using the phase stable multicolor pulses from HHG and even attosecond XUV flashes to create, steer, and follow ultrafast coherent plasma dynamics.