Measurements of self-guiding of ultrashort laser pulses over long distances

    Research output: Contribution to journalArticle

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    • K. Poder
    • J. M. Cole
    • J. C. Wood
    • S. Alatabi
    • P. S. Foster
    • C. Kamperidis
    • O. Kononenko
    • C. A. Palmer
    • D. Rusby
    • A. Sahai
    • Gianluca Sarri
    • D.R. Symes
    • J. R. Warwick
    • S.P.D. Mangles
    • Z. Najmudin

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    We report on the evaluation of the performance of self-guiding over extended distances with f /20 and f /40 focussing geometries. Guiding over 39 mm or more than 100 Rayleigh ranges was observed with the f /20 optic at ne = 1.5 × 1018 cm−3 . Analysis of guiding performance found that the extent of the exiting laser spatial mode closely followed the matched spot size predicted by 3D non-linear theory. Self-guiding with an f /40 optic was also characterised, with guided modes observed for a plasma length of 90 mm and a plasma density of ne = 9.5 × 1017 cm−3 . This corresponds to self-guided propagation over 53 Rayleigh ranges and is similar to distances obtained with discharge plasma channel guiding.

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    DOI

    Original languageEnglish
    Article number014022
    Number of pages6
    JournalPlasma Physics and Controlled Fusion
    Journal publication date31 Oct 2017
    Issue number1
    Volume60
    DOIs
    StatePublished - 31 Oct 2017

    ID: 136133775