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Dresden 2011 – scientific programme

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A: Fachverband Atomphysik

A 24: Attosecond physics I

A 24.5: Talk

Thursday, March 17, 2011, 17:30–17:45, BAR 205

High Harmonic Generation from liquid water droplets — •H.G. Kurz1,2, D.S. Steingrube1,2, T. Vockerodt1,2, E. Schultz1,2, D. Ristau3, M. Lein4, U. Morgner1,2,3, and M. Kovacev1,21Institut für Quantenoptik, Leibniz Universität Hannover, Deutschland — 2QUEST - Centre for Quantum Engeneering and Space-Time Research — 3Laser Zentrum Hannover e.V., Deutschland — 4Institut für theoretische Physik, Leibniz Universität Hannover, Deutschland

The generation of coherent radiation within the extreme ultraviolet spectral region is a vastly-growing research area of modern quantum optics. High Harmonic Generation (HHG) is based on nonlinear frequency conversion in gases, liquids and bulk media. With increasing target density, an enhancement of the conversion efficiency can be observed. Not only atoms serve as a target, but also clusters and molecules are extensively studied.
In this contribution, a micrometer-sized liquid water droplet source for debris-free HHG is presented, combining a high density with a molecular target. The droplets are prepared under vacuum condition, preventing reabsorption effects. The harmonic radiation is generated with a 100 fs, 795 nm laser pulse, provided by a chirped pulse amplification laser system. Results of pump-probe experiments and parametric studies concerning phase-matching effects are shown.

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