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Berlin 2012 – scientific programme

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DS: Fachverband Dünne Schichten

DS 20: Application of thin films

DS 20.1: Talk

Wednesday, March 28, 2012, 09:30–09:45, H 0111

Towards attosecond pulse shaping in the water window — •Alexander Guggenmos1,2, Michael Hofstetter1,2, Ferenc Krausz1,2, and Ulf Kleineberg1,21Fakultät für Physik, Ludwig-Maximilians-Universität München, Garching, Germany — 2Max-Planck-Institut für Quantenoptik, Garching, Germany

Attosecond pulses pave the way towards the direct observation of electron dynamics in atoms, molecules or solid surfaces/nanostructures with a never before achieved temporal precision. Having the tunability for shaping these generated pulses from high harmonic radiation, serves as key for getting even deeper physical insight into these dynamics utilizing pump-probe experiments. Aperiodic broadband multilayer XUV mirrors are key components to fulfill these requirements and to offer for each experiment its perfectly tailored attosecond pulse due to controlling spectral resolution, center energy, temporal resolution or to compress chirped pulses to their fourier limit. Extending the current technology to the water window range around 300-500 eV may enable on the one hand a complete new sort of experiments as the in-vitro investigation of bio-materials on the attosecond time scale but on the other hand limits the scope for perfectly matched pulses due to fabrication limits of aperiodic multilayer designs.

We will present first investigations of multilayer XUV optics for the water window range which can control spectral and temporal resolution and even compress attosecond pulses with a high precision of reproducibility. Simulations and optimizations of multilayer systems as well as experimental results of XUV measurements are presented.

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