X-ray conversion efficiency in short-pulse laser plasmas

Jean-Francois Pelletier; Mohamed Chaker; Yves Beaudoin; Christian Y. Cote; Jean-Claude Kieffer

doi:10.1117/12.165616

5 January 1994 X-ray conversion efficiency in short-pulse laser plasmas

Jean-Francois Pelletier, Mohamed Chaker, Yves Beaudoin, Christian Y. Cote, Jean-Claude Kieffer

Author Affiliations +

Proceedings Volume 2041, Mode-locked and Other Ultrashort Laser Designs, Amplifiers, and Applications; (1994) https://doi.org/10.1117/12.165616
Event: Optics Quebec, 1993, Quebec City, Canada

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.

Citation Download Citation

Jean-Francois Pelletier, Mohamed Chaker, Yves Beaudoin, Christian Y. Cote, and Jean-Claude Kieffer "X-ray conversion efficiency in short-pulse laser plasmas", Proc. SPIE 2041, Mode-locked and Other Ultrashort Laser Designs, Amplifiers, and Applications, (5 January 1994); https://doi.org/10.1117/12.165616

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