Regensburg 2010 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 9: Poster: Synthesis of Nanostructured Films by Self-organization, Thermoelectric Thin Films and Nanostructures, High-k and Low-k Dielectrics, Layer Deposition Processes, Layer Growth, Layer Properties, Application of Thin Films, Surface Modification, Hard and Superhard Coatings, Metal Layers

DS 9.43: Poster

Montag, 22. März 2010, 15:00–17:30, Poster D1

X-ray waveguides fabricated by thin film techniques — •Sven Philip Krüger, Giewekemeyer Klaus, Kalbfleisch Sebastian, Henrike Neubauer, and Tim Salditt — Georg-August Universität, Institut für Röntgenphysik, 37075 Göttingen, Deutschland

Waveguides can be used for spatial and coherent filtering of x-rays. We present a two-component waveguide design [1] of enhanced transmission efficiency at carbon guiding layer cross-sections up to sub-10 nm fabricated by magnetron sputtering. The transmission is enhanced by choosing an appropriate molybdenum interlayer. At the same time a strongly absorbing germanium cladding allows for short waveguide lengths which lead to an enhanced efficiency of the waveguide. We used an arrangement of two short waveguide slices to obtain an two-dimensionally confining waveguide with an effective source size of sub-15 nm². A first imaging experiment of a test pattern is presented and the images are reconstructed by holographic and iterative phase retrieval algorithms.

[1] T. Salditt et al, Phys. Rev. Lett. 100, 184801, (2008).