@inproceedings{7e6a6e36cca2477380453b5a3fa1e794,
title = "Gain dynamics in injection-seeded soft x-ray laser plasma amplifiers",
abstract = "We present the first measurement of the gain dynamics in an injectionseeded soft x-ray plasma amplifier (Wang et al. Nat. Photon. 8, 381, (2014)). A sequence of two time-delayed spatially-overlapping high harmonic pulses was injected into a λ =18.9 nm Ni-like Mo plasma amplifier to measure the regeneration of the population inversion that follows the gain depletion caused by the amplification of the first seed pulse. Collisional excitation is measured to re-establish in about ∼1.75 ps the population inversion depleted during the amplification of the seed pulse. The measured gain-recovery time is compared to model simulations to gain insight on the population inversion mechanisms that create the transient gain in these amplifiers. The result supports the concept of a soft x-ray laser amplification scheme to generate ultra-intense fully phase-coherent ultrashort soft x-ray laser pulses based on the continuous extraction of energy from a plasma- based amplifier by a stretched seed pulse.",
author = "S. Wang and Y. Wang and E. Oliva and L. Li and M. Berrill and L. Yin and J. Nejdl and B. Luther and C. Proux and \{Thuy Le\}, \{T. T.\} and J. Dunn and D. Ros and Ph Zeitoun and Rocca, \{J. J.\}",
note = "Publisher Copyright: {\textcopyright} Springer International Publishing Switzerland 2016.; 14th International Conference on X-Ray Lasers, 2014 ; Conference date: 26-05-2014 Through 30-05-2014",
year = "2016",
month = jan,
day = "1",
doi = "10.1007/978-3-319-19521-6\_46",
language = "English",
isbn = "9783319195209",
series = "Springer Proceedings in Physics",
publisher = "Springer Science and Business Media, LLC",
pages = "351--356",
editor = "Jorge Rocca and Carmen Menoni and Mario Marconi",
booktitle = "X-Ray Lasers 2014 - Proceedings of the 14th International Conference on X-Ray Lasers",
}