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  Ultrashort Free-Electron Laser X-ray Pulses

Helml, W., Grguraš, I., Juranić, P. N., Düsterer, S., Mazza, T., Maier, A. R., et al. (2017). Ultrashort Free-Electron Laser X-ray Pulses. Applied Sciences, 7(9): 915. doi:10.3390/app7090915.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-1609-C Version Permalink: http://hdl.handle.net/21.11116/0000-0002-1610-3
Genre: Journal Article

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applsci-07-00915-v2-2.pdf (Publisher version), 11MB
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applsci-07-00915-v2-2.pdf
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This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
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2017
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© by the authors. Licensee MDPI, Basel, Switzerland.

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https://dx.doi.org/10.3390/app7090915 (Publisher version)
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 Creators:
Helml, W.1, 2, Author
Grguraš, I.3, Author
Juranić, P. N.4, Author
Düsterer, S.5, Author
Mazza, T.6, Author
Maier, A. R.7, Author
Hartmann, N.8, Author
Ilchen, M.6, Author
Hartmann, G.9, Author
Patthey, L.4, Author
Callegari, C.10, Author
Costello, J. T.11, Author
Meyer, M.6, Author
Coffee, R. N.12, Author
Cavalieri, A. L.3, 13, Author              
Kienberger, R.2, Author
Affiliations:
1Department für Physik, Ludwig-Maximilians-Universität München, ou_persistent22              
2Physik-Department E11, Technische Universität München, ou_persistent22              
3Center for Free-Electron Laser Science, ou_persistent22              
4Paul Scherrer Institut, 5232 Villigen, Switzerland, ou_persistent22              
5Deutsches Elektronen-Synchrotron DESY, ou_persistent22              
6European XFEL GmbH, ou_persistent22              
7Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, ou_persistent22              
8Coherent Inc., 5100 Patrick Henry Drive, Santa Clara, ou_persistent22              
9Institut für Physik und CINSaT, Universität Kassel, ou_persistent22              
10Elettra—Sincrotrone Trieste, Strada Statale 14–km 163.5 in AREA Science Park, ou_persistent22              
11National Center for Plasma Science and Technology and School of Physical Sciences, Dublin City University, ou_persistent22              
12SLAC National Accelerator Laboratory, Linac Coherent Light Source, Menlo Park, ou_persistent22              
13Extreme Timescales, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938294              

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Free keywords: free-electron laser; ultrashort pulse characterization; ultrafast X-ray physics; laser-dressed electron spectroscopy
 Abstract: For the investigation of processes happening on the time scale of the motion of bound electrons, well-controlled X-ray pulses with durations in the few-femtosecond and even sub-femtosecond range are a necessary prerequisite. Novel free-electron lasers sources provide these ultrashort, high-brightness X-ray pulses, but their unique aspects open up concomitant challenges for their characterization on a suitable time scale. In this review paper we describe progress and results of recent work on ultrafast pulse characterization at soft and hard X-ray free-electron lasers. We report on different approaches to laser-assisted time-domain measurements, with specific focus on single-shot characterization of ultrashort X-ray pulses from self-amplified spontaneous emission-based and seeded free-electron lasers. The method relying on the sideband measurement of X-ray electron ionization in the presence of a dressing optical laser field is described first. When the X-ray pulse duration is shorter than half the oscillation period of the streaking field, few-femtosecond characterization becomes feasible via linear streaking spectroscopy. Finally, using terahertz fields alleviates the issue of arrival time jitter between streaking laser and X-ray pulse, but compromises the achievable temporal resolution. Possible solutions to these remaining challenges for single-shot, full time–energy characterization of X-ray free-electron laser pulses are proposed in the outlook at the end of the review.

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Language(s): eng - English
 Dates: 2017-07-282017-08-302017-09-062017-09
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Internal
 Identifiers: DOI: 10.3390/app7090915
 Degree: -

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Title: Applied Sciences
Source Genre: Journal
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Publ. Info: Basel, Schweiz : MDPI
Pages: - Volume / Issue: 7 (9) Sequence Number: 915 Start / End Page: - Identifier: Other: 2076-3417
CoNE: /journals/resource/2076-3417