Attosecond parametric pulse amplification in high order harmonic generation far from the ionization threshold

C. Serrat; J. Seres; E. Seres; T-H. Dinh; N. Hasegawa; M. Nishikino; S. Namba

doi:10.1364/EUVXRAY.2020.ETh3A.2

OSA High-brightness Sources and Light-driven Interactions Congress 2020 (EUVXRAY, HILAS, MICS)
OSA Technical Digest (Optica Publishing Group, 2020),
paper ETh3A.2
•https://doi.org/10.1364/EUVXRAY.2020.ETh3A.2

Attosecond parametric pulse amplification in high order harmonic generation far from the ionization threshold

C. Serrat, J. Seres, E. Seres, T-H. Dinh, N. Hasegawa, M. Nishikino, and S. Namba

Compact EUV & X-ray Light Sources 2020

Washington, DC United States
16–20 November 2020
ISBN: 978-1-943580-73-6

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Compact Sources, Applications, and Enabling Technologies II (ETh3A)

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C. Serrat, J. Seres, E. Seres, T. Dinh, N. Hasegawa, M. Nishikino, and S. Namba, "Attosecond parametric pulse amplification in high order harmonic generation far from the ionization threshold," in OSA High-brightness Sources and Light-driven Interactions Congress 2020 (EUVXRAY, HILAS, MICS), L. Assoufid, P. Naulleau, M. Couprie, T. Ishikawa, J. Rocca, C. Haefner, G. Sansone, T. Metzger, F. Quéré, M. Ebrahim-Zadeh, A. Helmy, F. Laurell, and G. Leo, eds., OSA Technical Digest (Optica Publishing Group, 2020), paper ETh3A.2.

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Abstract

We present first principles calculations of parametric amplification of attosec-ond coherent pulses around 100 eV at the single-atom level in high order harmonic generation from excited states of He⁺ and compare them with experimental measurements. Our results indicate the basic physics to achieve the desired attosecond XUV gain in the spectral regions far from the ionization threshold of the considered interacting media.

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