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Proceedings Paper

X-ray conversion efficiency in short-pulse laser plasmas
Author(s): Jean-Francois Pelletier; Mohamed Chaker; Yves Beaudoin; Christian Y. Cote; Jean-Claude Kieffer
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Paper Abstract

We present a comparative study of the x-ray emission produced by laser plasma sources in short ((tau) L equals 0.6 ps) and long ((tau) L equals 0.6 ns) pulse regimes for copper and tantalum targets. The experiments at (tau) L equals 0.6 ps show that the x-ray conversion efficiency (eta) is still increasing with laser intensity between 2 X 1015 W/cm2 and 5 X 1016 W/cm2 for both sub-keV (0.1 - 0.75 keV) and keV (0.75 - 2 keV) ranges. In addition, we found that the optimum values (eta) at (tau) L equals 0.6 ps are at least 2 - 4 times lower than those at (tau) L equals 0.6 ns.

Paper Details

Date Published: 5 January 1994
PDF: 7 pages
Proc. SPIE 2041, Mode-locked and Other Ultrashort Laser Designs, Amplifiers, and Applications, (5 January 1994); doi: 10.1117/12.165616
Show Author Affiliations
Jean-Francois Pelletier, INRS-Energie et Materiaux (Canada)
Mohamed Chaker, INRS-Energie et Materiaux (Canada)
Yves Beaudoin, INRS-Energie et Materiaux (Canada)
Christian Y. Cote, INRS-Energie et Materiaux (Canada)
Jean-Claude Kieffer, INRS-Energie et Materiaux (Canada)

Published in SPIE Proceedings Vol. 2041:
Mode-locked and Other Ultrashort Laser Designs, Amplifiers, and Applications
Michel Piche; Paul W. Pace, Editor(s)

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