Abstract
We present in this paper ongoing studies on seeded plasma-based soft X-ray lasers using the LASERIX facility. After an overview of the source setup and characteristics, we will discuss two prospects that might increase the interest of these coherent soft X-ray sources. We have successfully generated harmonic beams carrying Orbital Angular momentum. We briefly present this experiment and discuss the remaining challenges for amplifying these kinds of beams in a plasma-based soft X-ray laser. In the second part, we present numerical results on harmonic seed amplification in conditions leading to Rabi oscillations. This regime is known to be a promising way to reach femtosecond pulses in the present plasma amplifiers. We will discuss the possibility of increasing the stability of such a regime by the introduction of a continuous refractive loss in the gain region.
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Acknowledgements
This project has received funding from the LIDEX OPT2X grant and the Sesame PULSE-X support. The authors acknowledge the Centrale d’laboration et de Mtrologie des Optiques XUV (CEMOX) installation at Institut d’Optique Graduate School (IOGS), Palaiseau, France, for providing the multilayer optics.
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Guilbaud, O. et al. (2020). Seeded Soft X-Ray Lasers: Towards OAM Beam Amplification and Quasi-Pi-pulse Regime. In: Kozlová, M., Nejdl, J. (eds) X-Ray Lasers 2018. ICXRL 2018. Springer Proceedings in Physics, vol 241. Springer, Cham. https://doi.org/10.1007/978-3-030-35453-4_8
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DOI: https://doi.org/10.1007/978-3-030-35453-4_8
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