Phys. Rev. Lett. 107, 144801 (2011) [5 pages]

Coherence Properties of Individual Femtosecond Pulses of an X-Ray Free-Electron Laser

Abstract

References

Citing Articles (3)

Supplemental Material

Download: PDF (1,096 kB) Buy this article Export: BibTeX or EndNote (RIS)

I. A. Vartanyants et al.
Show All Authors/Affiliations

I. A. Vartanyants^1,2,*, A. Singer¹, A. P. Mancuso^1,†, O. M. Yefanov¹, A. Sakdinawat³, Y. Liu³, E. Bang³, G. J. Williams⁴, G. Cadenazzi⁵, B. Abbey⁵, H. Sinn⁶, D. Attwood³, K. A. Nugent⁵, E. Weckert¹, T. Wang⁴, D. Zhu⁴, B. Wu⁴, C. Graves⁴, A. Scherz⁴, J. J. Turner⁴, W. F. Schlotter⁴, M. Messerschmidt⁴, J. Lüning⁷, Y. Acremann⁸, P. Heimann⁹, D. C. Mancini¹⁰, V. Joshi¹⁰, J. Krzywinski⁴, R. Soufli¹¹, M. Fernandez-Perea¹¹, S. Hau-Riege¹¹, A. G. Peele¹², Y. Feng⁴, O. Krupin^4,6, S. Moeller⁴, and W. Wurth¹³
¹Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, D-22607 Hamburg, Germany
²National Research Nuclear University, “MEPhI,” 115409 Moscow, Russia
³University of California, Berkeley, California 94720, USA
⁴SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025-7015, USA
⁵ARC Centre of Excellence for Coherent X-ray Science, School of Physics, The University of Melbourne, Victoria, 3010, Australia
⁶European XFEL GmbH, Albert-Einstein-Ring 19, 22761 Hamburg, Germany
⁷Laboratoire de Chimie Physique - Matière et Rayonnement, UMR 7614 (CNRS), Université Pierre et Marie Curie, Paris, France
⁸ETH Zürich, Laboratorium für Festkörperphysik, Schafmattstrasse 16, 8093 Zürich, Switzerland
⁹Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
¹⁰Advanced Photon Source and Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA
¹¹Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA
¹²ARC Centre of Excellence for Coherent X-ray Science Department of Physics, La Trobe University, Melbourne, Victoria 3086, Australian Synchrotron, Clayton, 3168 Australia
¹³Institut für Experimentalphysik and CFEL, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany

Received 16 May 2011; published 30 September 2011

See accompanying Physics Focus

Measurements of the spatial and temporal coherence of single, femtosecond x-ray pulses generated by the first hard x-ray free-electron laser, the Linac Coherent Light Source, are presented. Single-shot measurements were performed at 780 eV x-ray photon energy using apertures containing double pinholes in “diffract-and-destroy” mode. We determined a coherence length of 17 μm in the vertical direction, which is approximately the size of the focused Linac Coherent Light Source beam in the same direction. The analysis of the diffraction patterns produced by the pinholes with the largest separation yields an estimate of the temporal coherence time of 0.55 fs. We find that the total degree of transverse coherence is 56% and that the x-ray pulses are adequately described by two transverse coherent modes in each direction. This leads us to the conclusion that 78% of the total power is contained in the dominant mode.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.107.144801

DOI:

10.1103/PhysRevLett.107.144801

PACS:

41.60.Cr, 42.25.Hz, 42.25.Kb, 42.55.Vc

About | Terms and Conditions | Subscriptions | Search | Help

Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.

Citation Search:

Phys. Rev. Lett. 107, 144801 (2011) [5 pages]

Coherence Properties of Individual Femtosecond Pulses of an X-Ray Free-Electron Laser