Cherenkov radiation from a plasma

ORAL

Abstract

The dispersion of electromagnetic waves in a plasma has traditionally precluded the emission of Cherenkov radiation into the far field: the phase velocity of the radiation exceeds the speed of light in vacuum and therefore the speed of a conventional driver. The flying focus—a moving focal point resulting from a chirped laser pulse focused by a chromatic lens—provides an intensity peak that can travel at superluminal velocities. Theory and simulations show that a plasma ponderomotively excited by a flying focus pulse can emit far-field Cherenkov radiation at THz frequencies.

*This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0001944 and the Office of Fusion Energy Sciences under contract no. DE-SC0016253.

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Presenters

  • John P. Palastro

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

Authors

  • John P. Palastro

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

  • Thomas M Antonsen

    • Univ of Maryland-College Park

  • Arnaud Colaitis

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

  • Russell Follett

    • Univ of Rochester
    • Laboratory for Laser Energetics, U. of Rochester
    • University of Rochester Laboratory for Laser Energetics
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • David Turnbull

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

  • Jorge M Vieira

    • ISCTE - Inst Universitario Lisboa
    • Instituto Superior Técnico, Lisbon, Portugal
    • GoLP/Instituto Superior Tecnico
    • Inst Superior Tecnico (IST)
    • GoLP/IPFN Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
    • Instituto de Plasmas e Fusão Nuclear-Laboratório Associado
    • Inst Superior Tecnico (IST), Inst Superior Tecnico (IST)

  • Dustin H Froula

    • University of Rochester Laboratory for Laser Energetics
    • Univ of Rochester
    • Laboratory for Laser Energetics, U. of Rochester
    • Laboratory for Laser Energetics
    • Laboratory for Laser Energetics, University of Rochester
    • University of Rochester