Ray-based modeling of cross-beam energy transfer between broadband lasers

ORAL

Abstract

Broadband laser drivers (>1% relative bandwidth) have the potential to mitigate many of the laser plasma instabilities that limit the performance of current direct-drive inertial confinement fusion implosions. To make a quantitative assessment of the impact of bandwidth, laser bandwidth models need to be included in the radiation hydrodynamic codes that are used to simulate implosions. Two different approaches to broadband ray-based cross-beam energy transfer (CBET) modeling (discrete and fixed spectrum) are developed and shown to be in good agreement with wave-based calculations.

*This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856 and ARPA-E BETHE Grant Number DE-FOA-0002212.

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Presenters

  • Russell K Follett

    • Laboratory for Laser Energetics - Rochester
    • University of Rochester, Laboratory for Laser Energetics

Authors

  • Russell K Follett

    • Laboratory for Laser Energetics - Rochester
    • University of Rochester, Laboratory for Laser Energetics

  • Han Wen

    • University of Rochester

  • Dustin H Froula

    • University of Rochester
    • University of Rochester, Laboratory for Laser Energetics

  • John P Palastro

    • University of Rochester
    • University of Rochester, Laboratory for Laser Energetics

  • Arnaud Colaitis

    • CELIA

  • Alexander G Seaton

    • Los Alamos National Laboratory
    • Los Alamos National Laboratory, Los Alamos, NM 87544, USA