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 Vol 4: Parametric amplification of attosecond pulse trains at 11 nm.


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This article is from Scientific Reports, volume 4.AbstractWe report the first experimental demonstration of the parametric amplification of attosecond pulse trains at around 11 nm. The helium amplifier is driven by intense laser pulses and seeded by high-order harmonics pulses generated in a neon gas jet. Our measurements suggest that amplification takes place only if the seed pulse-trains are perfectly synchronized in time with the driving laser field in the amplifier. Varying the delay, we estimate the durations of the individual extreme ultraviolet pulses within the train to be on the order of 0.2 fs. Our results demonstrate that strong-field parametric amplification can be a suitable tool to amplify weak attosecond pulses from non-destructive pump-probe experiments and it is an important step towards designing amplifiers for realization of energetic XUV pulses with sub-femtosecond duration using compact lasers fitting in university laboratories.



Author: Seres, J.; Seres, E.; Landgraf, B.; Ecker, B.; Aurand, B.; Hoffmann, A.; Winkler, G.; Namba, S.; Kuehl, T.; Spielmann, C.

Source: https://archive.org/







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