LSP Modeling of Reflection and Absorption of an Intense Laser Pulse from a Solid Target

ORAL

Abstract

We describe the results of LSP modeling of laser reflection from solid-density gold slabs surrounded by lower density plasma (scale length of order 10 $\mu $m). We treat p-polarized light at various incident angles, intensities up to 10$^{19~}$W/cm$^{2}$ and various pulse widths. We examine absorbed, specularly reflected, and scattered light, and near and far field spatial and spectral modification of the beam. We find large, regular variation of reflectivity and scatter with all parameters, increased divergence and red chirp in the reflected beam, and other effects. We compare to recent experiment.

*Work supported by the U.S. Department of Energy under contracts DE-FG02-05ER54834, DE-AC52-07NA27344, and by an allocation of computing time from the Ohio Supercomputer Center.

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Authors

  • Douglass Schumacher

    • The Ohio State University

  • Anthony Link

    • The Ohio State University

  • Vladimir Ovchinnikov

    • The Ohio State University

  • Richard Freeman

    • The Ohio State University

  • Linn Van Woerkom

    • The Ohio State University

  • Mingsheng Wei

    • University of California, San Diego

  • Farhat Beg

    • University of California, San Diego

  • Michael Key

    • Lawrence Livermore National Laboratory

  • Andrew Mackinnon

    • Lawrence Livermore National Laboratory

  • Pravesh Patel

    • Lawrence Livermore National Laboratory

  • Lujbomir Nikolic

    • University of Alberta

  • Ying Tsui

    • University of Alberta

  • Robert Fedosejevs

    • University of Alberta