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Appl. Sci. 2013, 3(3), 581-592; doi:10.3390/app3030581

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

1,* , 1
1 Laboratoire d'Optique Appliquée, ENSTA, CNRS, Ecole Polytechnique, Palaiseau 91672 France 2 Laboratoire de Physique des Gaz et Plasmas, CNRS Université Paris-Sud, Orsay 91400, France 3 Instituto de Fusion Nuclear, Universidad Politécnica de Madrid, Madrid 28006, Spain 4 Centro de Fisica dos Plasmas, Instituto Superior Tecnico, Lisbon 1049-001, Portugal
* Author to whom correspondence should be addressed.
Received: 16 May 2013 / Revised: 17 June 2013 / Accepted: 25 June 2013 / Published: 12 July 2013
(This article belongs to the Special Issue Ultraintense Ultrashort Pulse Lasers)
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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 µJ, 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.
Keywords: high harmonic generation; X-ray laser; plasma; chirped pulse amplification; modeling high harmonic generation; X-ray laser; plasma; chirped pulse amplification; modeling
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Zeitoun, P.; Oliva, E.; Le, T.T.T.; Ros, D.; Sebban, S.; Li, L.; Velarde, P.; Fajardo, M. X-ray Chirped Pulse Amplification: towards GW Soft X-ray Lasers. Appl. Sci. 2013, 3, 581-592.

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