Phys. Rev. Lett. 99, 174801 (2007) [4 pages]Spatiotemporal Stability of a Femtosecond Hard–X-Ray Undulator Source Studied by Control of Coherent Optical PhononsSee Also: Erratum Received 1 June 2007; published 26 October 2007 We report on the temporal and spatial stability of the first tunable femtosecond undulator hard–x-ray source for ultrafast diffraction and absorption experiments. The 2.5–1 Å output radiation is driven by an initial 50 fs laser pulse employing the laser-electron slicing technique. By using x-ray diffraction to probe laser-induced coherent optical phonons in bulk bismuth, we estimate an x-ray pulse duration of 140±30 fs FWHM with timing drifts below 30 fs rms measured over 5 days. Optical control of coherent lattice motion is demonstrated. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.174801
DOI:
10.1103/PhysRevLett.99.174801
PACS:
41.60.Ap, 42.65.Re, 78.47.+p
See AlsoErratum: P. Beaud, S. L. Johnson, A. Streun, R. Abela, D. Abramsohn, D. Grolimund, F. Krasniqi, T. Schmidt, V. Schlott, and G. Ingold, Erratum: Spatiotemporal Stability of a Femtosecond Hard–X-Ray Undulator Source Studied by Control of Coherent Optical Phonons [Phys. Rev. Lett. 99, 174801 (2007)], Phys. Rev. Lett. 100, 099901 (2008). |
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