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Nonlinear Coherence Effects in Transient-Absorption Ion Spectroscopy with Stochastic Extreme-Ultraviolet Free-Electron Laser Pulses

MPG-Autoren
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Ding,  Thomas
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Rebholz,  Marc
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Aufleger,  Lennart
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Hartmann,  Maximilian
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Meyer,  Kristina
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Stooß,  Veit
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Magunia,  Alexander
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

Wachs,  David
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Birk,  Paul
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Mi,  Yonghao
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Borisova,  Gergana Dimitrova
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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da Costa Castanheira,  Carina
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Rupprecht,  Patrick
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Cavaletto,  Stefano M.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;

Ott ,  Christian
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Pfeifer,  Thomas
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

Externe Ressourcen

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.103001
(Verlagsversion)

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1907.07182.pdf
(Preprint), 3MB

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Zitation

Ding, T., Rebholz, M., Aufleger, L., Hartmann, M., Meyer, K., Stooß, V., et al. (2019). Nonlinear Coherence Effects in Transient-Absorption Ion Spectroscopy with Stochastic Extreme-Ultraviolet Free-Electron Laser Pulses. Physical Review Letters, 123(10): 103001. doi:10.1103/PhysRevLett.123.103001.


Zitierlink: https://hdl.handle.net/21.11116/0000-0004-C20C-4
Zusammenfassung
We demonstrate time-resolved nonlinear extreme-ultraviolet absorption
spectroscopy on multiply charged ions, here applied to the doubly charged neon
ion, driven by a phase-locked sequence of two intense free-electron laser
pulses. Absorption signatures of resonance lines due to 2$p$--3$d$ bound--bound
transitions between the spin-orbit multiplets $^3$P$_{0,1,2}$ and
$^3$D$_{1,2,3}$ of the transiently produced doubly charged Ne$^{2+}$ ion are
revealed, with time-dependent spectral changes over a time-delay range of
$(2.4\pm0.3)\,\text{fs}$. Furthermore, we observe 10-meV-scale spectral shifts
of these resonances owing to the AC Stark effect. We use a time-dependent
quantum model to explain the observations by an enhanced coupling of the ionic
quantum states with the partially coherent free-electron-laser radiation when
the phase-locked pump and probe pulses precisely overlap in time.