5 papers
Polariton spectroscopy at the diamond K-edge via X-ray parametric down-conversion
Fridtjof Kerker, Dietrich Krebs, Xenia Brockmüller +4
It has recently been shown that x-ray parametric down-conversion (XPDC) provides access to high-energy polaritons, resulting from the hybridization of down-converted photons with e…
Probing the Linewidth of the 12.4-keV Solid-State Sc Isomeric Resonance
Peifan Liu, Miriam Gerharz, Berit Marx-Glowna +37
The Sc nuclear transition from the ground to the isomeric state at 12.389~keV, with a lifetime of 0.46~s, exhibits an extraordinarily narrow natural width of 1.4~feV and a q…
Towards novel probes for valence charges via X-ray optical wave mixing
Christina Boemer, Dietrich Krebs, Andrei Benediktovitch +3
We present a combined theoretical and experimental study of X-ray optical wave mixing. This class of nonlinear phenomena combines the strengths of spectroscopic techniques from the…
A self-referenced in-situ arrival time monitor for X-ray free-electron lasers
Michael Diez, Andreas Galler, Sebastian Schulz +11
We present a novel, highly versatile, and self-referenced arrival time monitor for measuring the femtosecond time delay between a hard X-ray pulse from a free-electron laser and an…
X-ray parametric down-conversion: Challenging previous findings on the basis of improved experimental methods
Christina Boemer, Dietrich Krebs, Michael Diez +3
X-ray parametric down-conversion is a fundamental nonlinear effect that promises a wide range of possible applications. Nevertheless, it has been scarcely investigated and unequivo…