Alignment of solid targets under extreme tight focus conditions generated by an ellipsoidal plasma mirror

Deepak Kumar, Michal Šmíd, Sushil Singh, Alexander Soloviev, Hannes Bohlin, Konstantin Burdonov, Gashaw Fente, Alexander Kotov, Livia Lancia, Vit Lédl, Sergey Makarov, Michael Morrissey, Sergey Perevalov, Denis Romanovsky, Sergey Pikuz, Ryousuke Kodama, David Neely, Paul McKenna, Tomáš Laštovička, Mikhail StarodubtsevStefan Weber, Motoaki Nakatsutsumi, Julien Fuchs

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Abstract

The design of ellipsoidal plasma mirrors (EPM) for the PEARL laser facility is presented. The EPM achieved a magnification of 0.32 in the focal spot size and the corresponding increase in focused intensity is expected to be ∼ 8. Designing and implementing such focusing optics for short pulse (< 100 fs) systems paves the way for their use in future high power facilities where they can be used to achieve intensities beyond 1023 W/cm2 . A retro-imaging based target alignment system is also described, which is used to align solid targets at the output of the ellispoidal mirrors (numerical aperture of 0.75 in this case).
Original languageEnglish
JournalMatter and Radiation at Extremes
Publication statusAccepted/In press - 13 Nov 2018

Keywords

  • high intensity laser matter interaction
  • ellipsoidal plasma mirror
  • tight focus
  • retro alignment

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    Kumar, D., Šmíd, M., Singh, S., Soloviev, A., Bohlin, H., Burdonov, K., Fente, G., Kotov, A., Lancia, L., Lédl, V., Makarov, S., Morrissey, M., Perevalov, S., Romanovsky, D., Pikuz, S., Kodama, R., Neely, D., McKenna, P., Laštovička, T., ... Fuchs, J. (Accepted/In press). Alignment of solid targets under extreme tight focus conditions generated by an ellipsoidal plasma mirror. Matter and Radiation at Extremes.