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

Applied Sciences

Philippe Zeitoun¹  Eduardo Oliva¹  Thi Thu Thuy Le¹  David Ros³  Stéphane Sebban¹  Lu Li¹  Pedro Velarde² 

[1] Laboratoire d’Optique Appliquée, ENSTA, CNRS, Ecole Polytechnique, Palaiseau 91672 France; E-Mails:;Instituto de Fusion Nuclear, Universidad Politécnica de Madrid, Madrid 28006, Spain; E-Mail:;Laboratoire de Physique des Gaz et Plasmas, CNRS Université Paris-Sud, Orsay 91400, France; E-Mail:

关键词: high harmonic generation;    X-ray laser;    plasma;    chirped pulse amplification;    modeling;   

DOI  :  10.3390/app3030581

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.