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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 13 — Jun. 30, 2014
  • pp: 16571–16584

Wigner distribution measurements of the spatial coherence properties of the free-electron laser FLASH

Tobias Mey, Bernd Schäfer, Klaus Mann, Barbara Keitel, Marion Kuhlmann, and Elke Plönjes  »View Author Affiliations


Optics Express, Vol. 22, Issue 13, pp. 16571-16584 (2014)
http://dx.doi.org/10.1364/OE.22.016571


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Abstract

The four-dimensional Wigner distribution function is determined from intensity profiles measured in the focused photon beam of FLASH (Free-electron laser in Hamburg) for a variety of photon beamline settings. The Wigner formalism results in comprehensive coherence information without the requirement of simplifying assumptions on the beam. The entire four-dimensional spatial mutual coherence function, horizontal and vertical coherence lengths and the global degree of coherence are derived and compared to Young’s double pinhole measurements [Opt. Express 20, 17480 (2012)].

© 2014 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(140.2600) Lasers and laser optics : Free-electron lasers (FELs)
(340.7480) X-ray optics : X-rays, soft x-rays, extreme ultraviolet (EUV)
(140.3295) Lasers and laser optics : Laser beam characterization

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 9, 2014
Revised Manuscript: May 28, 2014
Manuscript Accepted: May 31, 2014
Published: June 27, 2014

Citation
Tobias Mey, Bernd Schäfer, Klaus Mann, Barbara Keitel, Marion Kuhlmann, and Elke Plönjes, "Wigner distribution measurements of the spatial coherence properties of the free-electron laser FLASH," Opt. Express 22, 16571-16584 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-13-16571


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