@article{SokolovHuangSenfetal.2019,
  author    = {Sokolov, Andrey and Huang, Qiushi and Senf, Friedmar and Feng, Jiangtao and Lemke, Stephanie and Alimov, Svyatoslav and Knedel, Jeniffa and Zeschke, Thomas and Kutz, Oliver and Seliger, Tino and Gwalt, Grzegorz and Sch{\"a}fers, Franz and Siewert, Frank and Kozhevnikov, Igor and Qi, Runze and Zhang, Zhong and Li, Wenbin and Wang, Zhanshan},
  title     = {Optimized highly efficient multilayer-coated blazed gratings for the tender X-ray region},
  series = {Optics express : the international electronic journal of optics},
  volume    = {27},
  journal   = {Optics express : the international electronic journal of optics},
  number    = {12},
  publisher = {Optical Society of America},
  address   = {Washington},
  issn      = {1094-4087},
  doi       = {10.1364/OE.27.016833},
  pages     = {16833 -- 16846},
  year      = {2019},
  abstract  = {The optimized design of multilayer-coated blazed gratings (MLBG) for high-flux tender X-ray monochromators was systematically studied by numerical simulations. The resulting correlation between the multilayer d-spacing and grating blaze angle significantly deviated from the one predicted by conventional equations. Three high line density gratings with different blaze angles were fabricated and coated by the same Cr/C multilayer. The MLBG with an optimal blaze angle of 1.0 degrees showed a record efficiency reaching 60\% at 3.1 keV and 4.1 keV. The measured efficiencies of all three gratings were consistent with calculated results proving the validity of the numerical simulation and indicating a more rigorous way to design the optimal MLBG structure. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.},
  language  = {en}
}
@article{SchickLeGuyaderPontiusetal.2016,
  author    = {Schick, Daniel and Le Guyader, Loic and Pontius, Niko and Radu, Ilie and Kachel, Torsten and Mitzner, Rolf and Zeschke, Thomas and Schuessler-Langeheine, Christian and F{\"o}hlisch, Alexander and Holldack, Karsten},
  title     = {Analysis of the halo background in femtosecond slicing experiments},
  series = {Journal of synchrotron radiation},
  volume    = {23},
  journal   = {Journal of synchrotron radiation},
  publisher = {International Union of Crystallography},
  address   = {Chester},
  issn      = {1600-5775},
  doi       = {10.1107/S160057751600401X},
  pages     = {700 -- 711},
  year      = {2016},
  abstract  = {The slicing facility FemtoSpeX at BESSY II offers unique opportunities to study photo-induced dynamics on femtosecond time scales by means of X-ray magnetic circular dichroism, resonant and non-resonant X-ray diffraction, and X-ray absorption spectroscopy experiments in the soft X-ray regime. Besides femtosecond X-ray pulses, slicing sources inherently also produce a so-called `halo' background with a different time structure, polarization and pointing. Here a detailed experimental characterization of the halo radiation is presented, and a method is demonstrated for its correct and unambiguous removal from femtosecond time-resolved data using a special laser triggering scheme as well as analytical models. Examples are given for time-resolved measurements with corresponding halo correction, and errors of the relevant physical quantities caused by either neglecting or by applying a simplified model to describe this background are estimated.},
  language  = {en}
}