X-ray Chirped Pulse Amplification: towards GW Soft X-ray Lasers

Abstract : Extensive modeling of the seeding of plasma-based soft X-ray lasers is reported in this article. Seminal experiments on amplification in plasmas created from solids have been studied in detail and explained. Using a transient collisional excitation scheme, we show that a 18 mu J, 80 fs fully coherent pulse is achievable by using plasmas pumped by a compact 10 Hz laser. We demonstrate that direct seeding of plasmas created by nanosecond lasers is not efficient. Therefore, we propose and fully study the transposition to soft X-rays of the Chirped Pulse Amplification (CPA) technique. Soft X-ray pulses with energy of 6 mJ and 200 fs duration are reachable by seeding plasmas pumped by compact 100 J, sub-ns, 1 shot/min lasers. These soft X-ray lasers would reach GW power, corresponding to an increase of 100 times as compared to the highest peak power achievable nowadays in the soft X-ray region (30 eV-1 keV). X-ray CPA is opening new horizon for soft x-ray ultra-intense sources.
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Contributor : Pierre Zaparucha <>
Submitted on : Wednesday, November 23, 2016 - 9:40:05 AM
Last modification on : Wednesday, July 3, 2019 - 10:48:03 AM

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Philippe Zeitoun, Eduardo Oliva, Thi Le, David Ros, Stéphane Sebban, et al.. X-ray Chirped Pulse Amplification: towards GW Soft X-ray Lasers. Applied Sciences (Bucureş.., Balcan Society of Geometers, 2013, 3 (3), pp.581 - 592. ⟨10.3390/app3030581⟩. ⟨hal-01401239⟩

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