Author: Mücke, O.D.
Paper Title Page
FRA01
Prospects of Stimulated X-ray Raman Scattering with Free-Electron Laser Sources  
 
  • 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)
 
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