| |
- N. Rohringer, V. Kimberg, C. Weninger
Max Planck Institute for the Physics of Complex Systems, Dresden, Germany
- M. Agaker, R. Feifel, M. Mucke, J. Nordgren, J.E. Rubensson, C. Sathe, R. Squibb, V. Zhaunerchyk
Uppsala University, Uppsala, Sweden
- C. Bostedt, J.D. Bozek, S. Carron Montero, R.N. Coffee, J. Krzywinski, A. Lindahl, A. Lutmann, T.J. Maxwell
SLAC, Menlo Park, California, USA
- B. Erk, D. Rolles
DESY, Hamburg, Germany
- M. Ilchen
XFEL. EU, Hamburg, Germany
- T. Kierspel, J. Küpper, T.G. Mullins
University of Hamburg, Hamburg, Germany
- O.D. Mücke
CFEL, Hamburg, Germany
- M. Purvis, J.J. Rocca, D.P. Ryan
CSU, Fort Collins, Colorado, USA
- A. Sanchez-Gonzalez
Imperial College of Science and Technology, Department of Physics, London, United Kingdom
|
|
| |
XFELs might open the pathway to transfer non-linear spectroscopic techniques to the x-ray domain, to study electron motion at unprecedented time and length scales. A promising x-ray pump probe technique is based on stimulated electronic x-ray Raman scattering. I will present the first experimental demonstration of stimulated electronic x-ray Raman scattering in a gas sample of neon*. Despite the limited spectral coherence of SASE XFELs, high-resolution spectra can be obtained by statistical methods, opening the path to coherent stimulated x-ray Raman spectroscopy. An extension of these ideas to molecules** and the results of a recent experiment in CO will be discussed. The high-gain regime, involving exponential amplification and strong-field effects will be contrasted to stimulated scattering at moderate x-ray intensities, more appropriate for spectroscopic studies. A critically assessment of the feasibility of nonlinear x-ray spectroscopic techniques and requirements on the stability and pulse parameters of XFEL sources that could enable these new techniques, will be presented.
* C. Weninger et al., Phys. Rev. Lett. 111, 233902 (2013)
** C. Weninger and N. Rohringer, Phys Rev A 88, 053421 (2013)
|
|
