Berlin 2015 – scientific programme
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DS: Fachverband Dünne Schichten
DS 8: Application of Thin Films
DS 8.2: Talk
Monday, March 16, 2015, 19:00–19:15, H 0111
Chromium/Scandium attosecond multilayer mirrors — •Alexander Guggenmos1,2, Stefan Radünz1,2, Michael Jobst2, Marcus Ossiander2, Johann Riemensberger2, Bert Nickel1, Christina Scheu3, Eric Gullikson4, Reinhard Kienberger2,5, Ferenc Krausz1,2, and Ulf Kleineberg1,2 — 1LMU München, Fakultät für Physik, Garching, Germany — 2MPQ, Garching, Germany — 3LMU, Fakultät für Chemie, München, Germany — 4CXRO, Lawrence Berkeley National Lab, Berkeley, USA — 5TUM, Fakultät für Physik, Garching, Germany
Recent advances in the development of attosecond soft X-ray sources ranging into the water window spectral range, between the 1s states of carbon and oxygen (284 eV-543 eV), are also driving the development of suited broadband multilayer optics for steering and shaping attosecond pulses, enabling for the first time the unique investigation of ultrafast electronic processes within the core states of bio-molecules as proteins or other organic materials. Current attosecond experiments in the sub-200 eV range also benefit from this optic improvement. We present our achievements in optimizing ion-beam deposited Cr/Sc multilayer mirrors by a tailored material dependent deposition and interface polishing process, which offers attosecond mirrors from 140 eV up to 400 eV, thus present and future attosecond optics. Experimental results from measurements using X-ray reflectometry, XUV reflectometry as well as attosecond streaking characterization are shown and discussed.