Journal article

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

IA Vartanyants, A Singer, AP Mancuso, OM Yefanov, A Sakdinawat, Y Liu, E Bang, GJ Williams, G Cadenazzi, B Abbey, H Sinn, D Attwood, KA Nugent, E Weckert, T Wang, D Zhu, B Wu, C Graves, A Scherz, JJ Turner Show all

PHYSICAL REVIEW LETTERS | AMER PHYSICAL SOC | Published : 2011

Abstract

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 tra..

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University of Melbourne Researchers

Grants

Awarded by University of Hamburg through the BMBF


Awarded by BMBF


Awarded by U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences


Awarded by U. S. Department of Energy by Lawrence Livermore National Laboratory


Funding Acknowledgements

Portions of this research were carried out on the SXR Instrument at the LCLS, a division of SLAC National Accelerator Laboratory and an Office of Science user facility operated by Stanford University for the U. S. Department of Energy. The SXR Instrument is funded by a consortium whose membership includes the LCLS, Stanford University through the Stanford Institute for Materials Energy Sciences (SIMES), Lawrence Berkeley National Laboratory (LBNL), University of Hamburg through the BMBF priority program FSP 301, and the Center for Free Electron Laser Science (CFEL). Part of the work was supported by BMBF Project No. 05K10CHG. Use of the Center for Nanoscale Materials was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. Part of this work was performed under the auspices of the U. S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344. Financial support by the CNRS through the PEPS SASLELX program is acknowledged by J. L. We acknowledge a careful reading of the manuscript and suggestions made by Z. Huang and P. Emma.