Berlin 2012 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 37: Poster II: Focused electron beam induced processing for the fabrication of nanostructures (focused session, jointly with O); Nanoengineered thin films; Layer properties: electrical, optical, and mechanical properties; Thin film characterization: structure analysis and composition (XRD, TEM, XPS, SIMS, RBS,..); Application of thin films
DS 37.42: Poster
Donnerstag, 29. März 2012, 15:00–17:00, Poster E
Atomically precise deposition control of multilayer mirrors- towards attosecond water window experiments — •Alexander Guggenmos1,2, Michael Hofstetter1,2, Ferenc Krausz1,2, and Ulf Kleineberg1,2 — 1Ludwig-Maximilians-Universität München, Garching, Deutschland — 2Max-Planck-Institut für Quantenoptik, Garching, Deutschland
Extending current attosecond technology to the water window range (300-500 eV) may not only enable the generation of ever shorter pulses; it will further allow for the investigation of the underlying electron dynamics of fundamental biological processes such as photosynthesis.
Only aperiodic multilayer optics can exhibit the required degree of freedom for the synchronization and tailored shaping of attosecond pulses in that energy range.
With typical layer thicknesses of less than 1 nm, atomically precise knowledge of the intrinsic built-up of the individual layers and atomically precise control over the deposition process is required. As will be shown, ion beam sputter deposition in combination with sophisticated measurement techniques succeeds the required precision and enables a statistical accuracy far beyond 1 Angstrom.
We will present results from these elaborate calibrations, which enabled the fabrication of even three and four material aperiodic attosecond water window multilayer mirrors. These mirrors pave the way towards taylor-made attosecond pulses in the water window spectral range.