Determining the short laser pulse contrast based on X-Ray emission spectroscopy

Martynenko, A.S. and Skobelev, I.Yu. and Pikuz, S.A. and Ryazantsev, S.N. and Baird, C. and Booth, N. and Doehl, L. and Durey, P. and Farley, D. and Kodama, R. and Lancaster, Kate and McKenna, P. and Murphy, C. and Spindloe, C. and Pikuz, T.A. and Woolsey, N. (2021) Determining the short laser pulse contrast based on X-Ray emission spectroscopy. High Energy Density Physics, 38. 100924. ISSN 1574-1818 (https://doi.org/10.1016/j.hedp.2021.100924)

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Abstract

The interaction of high-power short lasers with solid density targets is an important application of modern solid state lasers. However, uncertainties in measurements due to lack of information on the laser pedestal-to-peak contrast limits the validity of many conclusions. We show that X-ray spectral measurements can provide a straightforward way for accessing the laser pedestal-to-peak contrast. The experiments use silicon targets and relativistic laser intensities of 3 × 10 20 W/cm 2 with a pulse duration of 1 ps. By not using or using a plasma mirror we compare low and high contrast measurements of the Ly-α line and its satellites to show that these lines are an effective laser contrast diagnostic. This diagnostic has potential to reduce uncertainty in future laser-solid interaction studies.

ORCID iDs

Martynenko, A.S., Skobelev, I.Yu., Pikuz, S.A., Ryazantsev, S.N., Baird, C., Booth, N., Doehl, L., Durey, P., Farley, D., Kodama, R., Lancaster, Kate, McKenna, P. ORCID logoORCID: https://orcid.org/0000-0001-8061-7091, Murphy, C., Spindloe, C., Pikuz, T.A. and Woolsey, N.;
  • Item type:Article
    ID code:75244
    Dates:
    Date
    Event
    28 March 2021
    Published
    27 January 2021
    Published Online
    24 January 2021
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:02 Feb 2021 14:48
    Last modified:11 Nov 2024 12:58
    URI:https://strathprints.strath.ac.uk/id/eprint/75244
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