Femtosecond time-delay X-ray holography

  title={Femtosecond time-delay X-ray holography},
  author={Henry N. Chapman and Stefan Hau-Riege and Michael. Bogan and Sa{\vs}a Bajt and Anton Barty and S{\'e}bastien Boutet and Stefano Marchesini and Matthias Frank and Bruce W. Woods and W. Henry Benner and Richard A. London and Urs Rohner and Abraham Sz{\"o}ke and Eberhard Spiller and Thomas M{\"o}ller and Christoph Bostedt and David A. Shapiro and Marion Kuhlmann and Rolf Treusch and Elke Pl{\"o}njes and Florian Burmeister and Magnus Bergh and Carl Caleman and G{\"o}sta Huldt and M. Marvin Seibert and Janos Hajdu},
Extremely intense and ultrafast X-ray pulses from free-electron lasers offer unique opportunities to study fundamental aspects of complex transient phenomena in materials. Ultrafast time-resolved methods usually require highly synchronized pulses to initiate a transition and then probe it after a precisely defined time delay. In the X-ray regime, these methods are challenging because they require complex optical systems and diagnostics. Here we propose and apply a simple holographic measurement… 
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