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Rolles D, Boll R, Erk B, et al. An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers. J Vis Exp. 2018;(140)doi: 10.3791/57055.
Rolles, D., Boll, R., Erk, B., Rompotis, D., & Manschwetus, B. (2018). An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers. Journal of visualized experiments : JoVE, (140), . https://doi.org/10.3791/57055
Rolles, Daniel, et al. "An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers." Journal of visualized experiments : JoVE vol. ,140 (2018). doi: https://doi.org/10.3791/57055
Rolles D, Boll R, Erk B, Rompotis D, Manschwetus B. An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers. J Vis Exp. 2018 Oct 23;(140). doi: 10.3791/57055. PMID: 30417878; PMCID: PMC6235592.
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J Vis Exp. 2018 Oct 23;(140). doi: 10.3791/57055.

An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers.

Journal of visualized experiments : JoVE

Daniel Rolles, Rebecca Boll, Benjamin Erk, Dimitrios Rompotis, Bastian Manschwetus

Affiliations

  1. J.R. Macdonald Laboratory, Department of Physics, Kansas State University; [email protected].
  2. Deutsches Elektronen-Synchrotron DESY; European XFEL GmbH.
  3. Deutsches Elektronen-Synchrotron DESY.

PMID: 30417878 PMCID: PMC6235592 DOI: 10.3791/57055

Abstract

This protocol describes key steps in performing and analyzing femtosecond pump-probe experiments that combine a femtosecond optical laser with a free-electron laser. This includes methods to establish the spatial and temporal overlap between the optical and free-electron laser pulses during the experiment, as well as important aspects of the data analysis, such as corrections for arrival time jitter, which are necessary to obtain high-quality pump-probe data sets with the best possible temporal resolution. These methods are demonstrated for an exemplary experiment performed at the FLASH (Free-electron LASer Hamburg) free-electron laser in order to study ultrafast photochemistry in gas-phase molecules by means of velocity map ion imaging. However, most of the strategies are also applicable to similar pump-probe experiments using other targets or other experimental techniques.

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