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Appl. Sci. 2013, 3(3), 581-592;

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

Laboratoire d'Optique Appliquée, ENSTA, CNRS, Ecole Polytechnique, Palaiseau 91672 France
Laboratoire de Physique des Gaz et Plasmas, CNRS Université Paris-Sud, Orsay 91400, France
Instituto de Fusion Nuclear, Universidad Politécnica de Madrid, Madrid 28006, Spain
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. View Full-Text
Keywords: high harmonic generation; X-ray laser; plasma; chirped pulse amplification; modeling high harmonic generation; X-ray laser; plasma; chirped pulse amplification; modeling

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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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