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  1. link.aps.org

    The laser interaction with an electron-positron-ion mixed plasma is studied from the perspective of the associated high-order harmonic generation. For an idealized mixed plasma which is assumed with a sharp plasma-vacuum interface and uniform density distribution, when it is irradiated by a weakly relativistic laser pulse, well-defined signals at harmonics of the plasma frequency in the ...
    Author:W. L. Zhang, T. Grismayer, K. M. Schoeffler, R. A. Fonseca, R. A. Fonseca, L. O. SilvaPublished:2021
  2. researchgate.net

    The laser interaction with an electron-positron-ion mixed plasma is studied, from the perspective of the associated high-order harmonic generation. For an idealized mixed plasma which is assumed ...
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  4. ui.adsabs.harvard.edu

    The laser interaction with an electron-positron-ion mixed plasma is studied, from a perspective of the associated high-order harmonic generation. The harmonic spectrum is shown to be significantly changed after an electron-positron pair plasma is produced. A dense positron beam accelerated by the laser at the target front excites strong counterpropagating plasma waves and triggers inverse two ...
    Author:Wenlong Zhang, Thomas Grismayer, Ricardo Fonseca, Luis SilvaPublished:2018
  5. In this paper, the laser interaction with an electron-positron-ion mixed plasma is studied, from the perspec-tive of the associated high-order harmonic generation (HHG) [39, 40]. HHG is a frequency up-conversion process, and its spectrum reveals the local laser-driven plasma dynamics at the surface of the target or collec-
    Author:W. L. Zhang, T. Grismayer, K. M. Schoeffler, R. A. Fonseca, R. A. Fonseca, L. O. SilvaPublished:2021
  6. Was this helpful?
  7. ui.adsabs.harvard.edu

    The high-order harmonics generation (HHG) in an electron-positron-ion plasma with varying proportions is investigated. We find that the amplitude of HHG spectrum is enhanced in mixed targets compared with a pure electron-ion target. Several prominently amplified spectral features are observed in the spectrum, i.e., harmonics of the local plasma frequency in the inertial length region.
    Author:Wenlong Zhang, Thomas Grismayer, Ricardo Fonseca, Luis SilvaPublished:2018
  8. pubmed.ncbi.nlm.nih.gov

    The laser interaction with an electron-positron-ion mixed plasma is studied from the perspective of the associated high-order harmonic generation. For an idealized mixed plasma which is assumed with a sharp plasma-vacuum interface and uniform density distribution, when it is irradiated by a weakly r …
  9. link.springer.com

    High-order harmonics generation (HHG) in laser-induced plasmas is an advanced method for creating coherent radiation sources in the extreme ultraviolet region for different purposes. We review previous developments and recent advancements of this approach aiming at the high-order nonlinear spectroscopy of materials for studying the fundamental processes in micro- and macro-systems and ...
  10. link.springer.com

    May 13, 2023We present a new experimental setup for high-order harmonic generation in laser-produced plasmas, allowing the generation of coherent VUV and EUV light, as well as characterisation of the laser-produced plasmas by studying the emitted harmonics. We have successfully generated high-order harmonics in laser-produced Al, Ni, Ag, In, and Sn plasmas. Large differences in harmonic spectra and signal ...
  11. researchgate.net

    The laser interaction with an electron-positron-ion mixed plasma is studied, from the perspective of the associated high-order harmonic generation. For an idealized mixed plasma which is assumed ...

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