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  Enabling time-resolved 2D spatial-coherence measurements using the Fourier-analysis method with an integrated curved-grating beam monitor

Bagschik, K., Schneider, M., Wagner, J., Buss, R., Riepp, M., Philippi-Kobs, A., et al. (2020). Enabling time-resolved 2D spatial-coherence measurements using the Fourier-analysis method with an integrated curved-grating beam monitor. Optics Letters, 45(19), 5591-5594. doi:/10.1364/OL.402264.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-33BC-C Version Permalink: http://hdl.handle.net/21.11116/0000-0007-33BD-B
Genre: Journal Article

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2020
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© 2020 Optical Society of America
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© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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 Creators:
Bagschik, Kai 1, Author
Schneider, Michael2, Author
Wagner, Jochen3, Author
Buss, Ralph3, 4, Author
Riepp, Matthias1, Author
Philippi-Kobs, Andre1, Author
Müller, Leonard1, 5, Author
Rosecker, Wojciech1, Author
Trinter, Florian1, 6, Author              
Hoesch, Moritz1, Author
Viefhaus, Jens7, Author
Eisebitt, Stefan2, Author
Grübel, Gerhard1, 4, Author
Oepen, Hans Peter3, 4, Author
Frömter, Robert3, 4, Author
Affiliations:
1Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany , ou_persistent22              
2Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Straße 2a, 12489 Berlin, Germany , ou_persistent22              
3Institut für Nanostruktur- und Festkörperphysik, Universität Hamburg, CHyN, Luruper Chaussee 149, 22761 Hamburg, Germany , ou_persistent22              
4The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany, ou_persistent22              
5Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany, ou_persistent22              
6Molecular Physics, Fritz Haber Institute, Max Planck Society, ou_634545              
7Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, 12489 Berlin, Germany , ou_persistent22              

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 Abstract: Direct 2D spatial-coherence measurements are increasingly gaining importance at synchrotron beamlines, especially due to present and future upgrades of synchrotron facilities to diffraction-limited storage rings. We present a method to determine the 2D spatial coherence of synchrotron radiation in a direct and particularly simple way by using the Fourier-analysis method in conjunction with curved gratings. Direct photon-beam monitoring provided by a curved grating circumvents the otherwise necessary separate determination of the illuminating intensity distribution required for the Fourier-analysis method. Hence, combining these two methods allows for time-resolved spatial-coherence measurements. As a consequence, spatial-coherence degradation effects caused by beamline optics vibrations, which is one of the key issues of state-of-the-art X-ray imaging and scattering beamlines, can be identified and analyzed.

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Language(s): eng - English
 Dates: 2020-09-022020-07-082020-09-042020-09-302020-10-01
 Publication Status: Published in print
 Pages: 4
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: /10.1364/OL.402264
 Degree: -

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Title: Optics Letters
Source Genre: Journal
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Publ. Info: Washington : Optical Society of America
Pages: 4 Volume / Issue: 45 (19) Sequence Number: - Start / End Page: 5591 - 5594 Identifier: ISSN: 0146-9592
CoNE: https://pure.mpg.de/cone/journals/resource/954925474435