Containing intense laser light in circular cavity with magnetic trap door

X. H. Yang, W. Yu, M. Y. Yu, H. Xu, Y. Y. Ma, Z. M. Sheng, H. B. Zhuo

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It is shown by particle-in-cell simulation that intense circularly polarized (CP) laser light can be contained in the cavity of a solid-density circular Al-plasma shell for hundreds of light-wave periods before it is dissipated by laser-plasma interaction. A right-hand CP laser pulse can propagate with almost no reflection and attenuation into the cavity through a highly magnetized overdense H-plasma slab filling the entrance hole. The entrapped laser light is then multiply reflected at the inner surfaces of the slab and shell plasmas, slowly losing energy to the latter. Compared to that of the incident laser, the frequency is only slightly broadened and the wave vector slightly modified by the appearance of weak nearly isotropic and homogeneous fluctuations.
Original languageEnglish
Article number111903
Number of pages4
JournalApplied Physics Letters
Publication statusPublished - 17 Mar 2017


  • particle-in-cell simulations
  • circularly polarized
  • laser-plasma interactions
  • electrmagnetic waves
  • right-hand circularly polarized laser
  • trapping


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