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A: Fachverband Atomphysik

A 20: Poster II

A 20.12: Poster

Mittwoch, 8. März 2023, 16:30–19:00, Empore Lichthof

Dynamically-controllable resonant x-ray optics via mechanically-induced refractive-index control — •Miriam Gerharz1, Dominik Lentrodt1,2,3, Lars Bocklage4, Kai Schlage4, Kai Schulze5,6, Christian Ott1, Lukas Wolff1, René Steinbrügge4, Olaf Leupold4, Ilya Sergeev4, Gerhard Paulus5,6, Christoph H. Keitel1, Ralf Röhlsberger4,5,6, Thomas Pfeifer1, and Jörg Evers11Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Physikalisches Institut, Freiburg, Germany — 3EUCOR Centre for Quantum Science and Quantum Computing, Freiburg, Germany — 4Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany — 5Helmholtz-Institut Jena, Jena, Germany — 6Institut für Optik und Quantenelektronik, Jena, Germany

In this project we introduce a concept for dynamically-controllable resonant x-ray optics. Using piezo-control methods, we can displace a solid-state target much faster than the lifetime of its resonances. This creates a mechanically-induced phase shift, which can be associated with a frequency-dependent effective refractive index n(ω) of the moving target. Hence, we can achieve polarization control by mechanically-induced birefringence. We theoretically and experimentally demonstrate the approach with a x-ray polarization interferometer, in which the interference is controlled by the mechanically-induced refractive-index control. This setup can be used for temporal gating and provides a sensitive tool for a noise background analysis on sub-Ångstrom level.

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