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DS: Fachverband Dünne Schichten
DS 20: Application of Thin Films
DS 20.7: Talk
Tuesday, March 15, 2011, 11:45–12:00, GER 38
A-periodic multilayer development for attosecond pulses in the 300-500 eV photon energy range — Alexander Guggenmos1,2, Michael Hofstetter1,2, Roman Rauhut1, and •Ulf Kleineberg1,2 — 1Fakultät für Physik, Ludwig-Maximilians-Universität München, Garching, Germany — 2Max-Planck-Institut für Quantenoptik, Garching, Germany
The development of ultrafast X-ray pulses in the sub-femtosecond time regime is a cutting edge technology for studying electron dynamics in atoms, molecules or solid surfaces / nanostructures by means of pump/probe electron spectroscopy. XUV elements as multilayer mirrors and thin metal filters are used to filter and shape attosecond bursts from high harmonic radiation. One near future goal is to extend the current technology to higher photon energies, reaching the water window range around 300 - 500 eV, where the in-vitro investigation of bio-materials on ultra-short time scales becomes possible. Following the ideas of nowadays experimental setups, both the spectral and the temporal resolution can be determined and guided by means of periodic and a-periodic multilayer mirrors, allowing for spectral and temporal soft X-ray pulse shaping. We will present first investigations of periodic and a-periodic multilayer XUV optics in that energy range of 300-400 eV and discuss their applications for filtering single attosecond pulses from High Harmonic radiation. Simulations and optimizations of various binary and ternary multilayer material systems as well as first experimental results achieved by Ion Beam Deposition and insitu-ellispometry of the deposited nanolayers are demonstrated.