Demonstration of thin film compression for short-pulse X-ray generation

D. M. Farinella, M. Stanfield, N. Beier, T. Nguyen, S. Hakimi, T. Tajima, F. Dollar, J. Wheeler, G. Mourou

Research output: Contribution to journalArticlepeer-review

Abstract

Thin film compression to the single-cycle regime combined with relativistic compression offers a method to transform conventional ultrafast laser pulses into attosecond X-ray laser pulses. These attosecond X-ray laser pulses are required to drive wakefields in solid density materials which can provide acceleration gradients of up to TeV/cm. Here we demonstrate a nearly 99% energy efficient compression of a 6.63 mJ, 39 fs laser pulse with a Gaussian mode to 20 fs in a single stage. Further, it is shown that as a result of Kerr-lensing, the focal spot of the system is slightly shifted on-axis and can be recovered by translating the imaging system to the new focal plane. This implies that with the help of wave-front shaping optics the focusability of laser pulses compressed in this way can be partially preserved.

Original languageEnglish (US)
Article number1943015
JournalInternational Journal of Modern Physics A
Volume34
Issue number34
DOIs
StatePublished - Dec 10 2019
Externally publishedYes

Keywords

  • nonlinear optics
  • relativistic compression
  • Thin film compression
  • wakefield acceleration

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