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Proceedings Paper

New 100-Hz repetition rate soft x-ray laser plasma source for ultrafast XANES applications
Author(s): S. Fourmaux; L. Lecherbourg; M. Chagnon; H. C. Bandulet; P. Audebert; J. C. Kieffer
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Paper Abstract

We present here a laser based time resolved ultrafast XANES beam line operating with the 100 Hz ALLS facility laser system (100 mJ and 35 fs at 800 nm wavelength). This system is based on a broadband soft x-ray plasma source, produced with a tantalum solid target, and a grazing flat field incidence grating designed to work in the 1-5 nm range. This femtosecond x-ray absorption spectroscopy experimental set up is used to study ultrafast phase transition in vanadium dioxide (VO2). In this model system we are probing the electronic dynamics occurring during semiconductor to metal phase transition following excitation by a femtosecond laser pulse.

Paper Details

Date Published: 2 October 2007
PDF: 9 pages
Proc. SPIE 6703, Ultrafast X-Ray Sources and Detectors, 67030D (2 October 2007); doi: 10.1117/12.735274
Show Author Affiliations
S. Fourmaux, INRS-EMT, Univ. du Québec (Canada)
L. Lecherbourg, INRS-EMT, Univ. du Québec (Canada)
LULI, CNRS, CEA-Univ. Paris 6 Ecole Polytechnique (France)
M. Chagnon, Institut National de la Recherche Scientifique (Canada)
H. C. Bandulet, Institut National de la Recherche Scientifique (Canada)
P. Audebert, Lab. d'Electronique de Technologie de l'Information (France)
J. C. Kieffer, INRS-EMT, Univ. du Québec (Canada)

Published in SPIE Proceedings Vol. 6703:
Ultrafast X-Ray Sources and Detectors
Zenghu Chang; George A. Kyrala; Jean-Claude Kieffer, Editor(s)

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