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Proceedings Paper

Characterization of an OFI seeded soft x-ray laser
Author(s): Ph. Zeitoun; S. Sebban; J. P. Goddet; F. Bridou; F. Burgy; B. Cros; D. Douillet; J. Gautier; O. Guillbaud; G. Jamelot; D. Joyeux; S. Kazamias; A. Klisnick; G. Maynard; A. S. Morlens; D. Phalippou; T. Lefrou; D. Ros; J. P. Rousseau
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Paper Abstract

Since the first seeding of an OFI soft x-ray laser in 2004, we progressed towards the full characterization of the output beam. The final is to be able to deliver to users well-known beam. Temporal as well as spatial parameters have been measured for different conditions of amplification. We observed a strong enhancement of the spatial coherence due to the amplification process with a far-field pattern exhibiting an airy-like shape. The gain zone having strong discontinuity behaves like a hard pinhole. Spatial filtering has been also observed on the wave front (δ/5 root-mean-square, rms, before seeding and δ/20 rms after amplification). Temporal coherence has been studied thanks to the use of a Fourier- Transform spectrometer. Spectral widths, δδ/δ, around 10-5 have been measured for different plasma lengths or gas pressures. Departure from Gaussian shape has been clearly observed on the spectral line for some cases.

Paper Details

Date Published: 12 October 2007
PDF: 11 pages
Proc. SPIE 6702, Soft X-Ray Lasers and Applications VII, 670209 (12 October 2007); doi: 10.1117/12.731002
Show Author Affiliations
Ph. Zeitoun, Lab. d’Optique Appliquée (France)
S. Sebban, Lab. d’Optique Appliquée (France)
J. P. Goddet, Lab. d’Optique Appliquée (France)
F. Bridou, Lab. Charles Fabray de l'Institut d'Optique, CNRS, Univ. Paris Sud (France)
F. Burgy, Lab. d’Optique Appliquée (France)
B. Cros, Lab. de Physique des Gaz et Plasmas, Univ. Paris-Sud (France)
D. Douillet, Lab. d’Optique Appliquée (France)
J. Gautier, Lab. d’Optique Appliquée (France)
O. Guillbaud, Lab. d'Interaction du rayonnement, Univ. Paris Sud (France)
G. Jamelot, Lab. d'Interaction du rayonnement, Univ. Paris Sud (France)
D. Joyeux, Lab. Charles Fabray de l'Institut d'Optique, CNRS, Univ. Paris Sud (France)
S. Kazamias, Lab. d'Interaction du rayonnement, Univ. Paris Sud (France)
A. Klisnick, Lab. d'Interaction du rayonnement, Univ. Paris Sud (France)
G. Maynard, Lab. de Physique des Gaz et Plasmas, Univ. Paris-SudI (France)
A. S. Morlens, Lab. d’Optique Appliquée (France)
D. Phalippou, Lab. Charles Fabray de l'Institut d'Optique, CNRS, Univ. Paris Sud (France)
T. Lefrou, Lab. d’Optique Appliquée (France)
D. Ros, Lab. d'Interaction du rayonnement, Univ. Paris Sud (France)
J. P. Rousseau, Lab. d’Optique Appliquée (France)


Published in SPIE Proceedings Vol. 6702:
Soft X-Ray Lasers and Applications VII
Gregory J. Tallents; James Dunn, Editor(s)

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