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Tailoring interference and nonlinear manipulation of femtosecond x-rays

  • We present ultrafast x-ray diffraction (UXRD) experiments on different photoexcited oxide superlattices. All data are successfully simulated by dynamical x-ray diffraction calculations based on a microscopic model, that accounts for the linear response of phonons to the excitation laser pulse. Some Bragg reflections display a highly nonlinear strain dependence. The origin of linear and two distinct nonlinear response phenomena is discussed in a conceptually simpler model using the interference of envelope functions that describe the diffraction efficiency of the average constituent nanolayers. The combination of both models facilitates rapid and accurate simulations of UXRD experiments.

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Author details:Marc HerzogORCiDGND, Daniel Schick, Wolfram LeitenbergerGND, Roman Shayduk, Renske M. van der Veen, Christopher J. Milne, Steven Lee Johnson, Ionela Vrejoiu, Matias BargheerORCiDGND
DOI:https://doi.org/10.1088/1367-2630/14/1/013004
ISSN:1367-2630
Title of parent work (English):New journal of physics : the open-access journal for physics
Publisher:IOP Publ. Ltd.
Place of publishing:Bristol
Publication type:Article
Language:English
Year of first publication:2012
Publication year:2012
Release date:2017/03/26
Volume:14
Issue:1
Number of pages:9
Funding institution:DFG [BA 2281/3-1, SFB 762]
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Peer review:Referiert
Publishing method:Open Access
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