Modelling and design of high harmonic seeding in soft x-ray laser plasmas with both direct and stretched amplification techniques: application to ELI facilities

Philippe Zeitoun; Eduardo Oliva; Marta Fajardo; David Ros; Moana Pittman; Stéphane Sebban; Pedro Velarde

doi:10.1117/12.886735

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9 June 2011 Modelling and design of high harmonic seeding in soft x-ray laser plasmas with both direct and stretched amplification techniques: application to ELI facilities

Philippe Zeitoun, Eduardo Oliva, Marta Fajardo, David Ros, Moana Pittman, Stéphane Sebban, Pedro Velarde

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Proceedings Volume 8080, Diode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: the European Pathway to Laser Energy; 808019 (2011) https://doi.org/10.1117/12.886735
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic

Abstract

Seeding plasma-based soft x-ray laser (SXRL) demonstrated diffraction-limited, fully coherent in space and in time beam but with energy not exceeding 1 μJ per pulse. Quasi-steady-state (QSS) plasmas demonstrated to be able to store high amount of energy and then amplify incoherent SXRL up to several mJ. Using 1D time-dependant Bloch-Maxwell model including amplification of noise, we demonstrated that femtosecond HHG cannot be efficiently amplified in QSS plasmas. However, using Chirped Pulse Amplification concept on HHG seed allows to extract most of the stored energy, reaching up to 5 mJ in fully coherent 130 fs pulses. Original pump-probe experiments will be proposed thanks to the high laser energy available in ELI facilities.

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Philippe Zeitoun, Eduardo Oliva, Marta Fajardo, David Ros, Moana Pittman, Stéphane Sebban, and Pedro Velarde "Modelling and design of high harmonic seeding in soft x-ray laser plasmas with both direct and stretched amplification techniques: application to ELI facilities", Proc. SPIE 8080, Diode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: the European Pathway to Laser Energy, 808019 (9 June 2011); https://doi.org/10.1117/12.886735

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