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K: Fachverband Kurzzeit- und angewandte Laserphysik

K 4: Poster

K 4.6: Poster

Dienstag, 10. März 2020, 16:30–18:30, f428

High-Order Harmonic Generation in Liquids — •Jan Heine, Christoph Jusko, Elisa Appi, Uwe Morgner, and Milutin Kovacev — Institut für Quantenoptik, Cluster of Excellence PhoenixD, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover

High-order Harmonic generation (HHG) is a well established technology for probing ultrafast processes, allowing researchers to generate ultra-short optical pulses in the attosecond regime through nonlinear frequency conversion. While the generation process in gas-phase targets is well understood, there is still ongoing investigation on the interaction of ultrashort laser pulses with high-density media such as liquids [1] and solids [2]. Here, we present a HHG source using liquid droplets, with which we can investigate the impact of different target geometries (e. g. water sheet/droplet) and possible additives on the generation process. We are currently working on reducing the target size to be comparable to the wavelength of our driving pulse. This way we expect to see interesting dynamics, similar to the interaction of laser pulses with solid nanostructures and nanoantennas.

[1] T. T. Luu et al., Nature Commun. 9, 3723 (2018)

[2] S. Ghimire et al., Nature Phys. 15, 10-16 (2019)