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Attosecond pulses at kiloelectronvolt photon energies from high-order-harmonic generation with core electrons

MPG-Autoren
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Buth,  Christian
Argonne National Laboratory, Argonne, Illinois 60439, USA;
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

He,  Feng
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Ullrich,  Joachim H.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;
Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany;

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

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Hatsagortsyan,  Karen Zaven
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

Externe Ressourcen

http://link.aps.org/doi/10.1103/PhysRevA.88.033848
(Verlagsversion)

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1203.4127.pdf
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Zitation

Buth, C., He, F., Ullrich, J. H., Keitel, C. H., & Hatsagortsyan, K. Z. (2013). Attosecond pulses at kiloelectronvolt photon energies from high-order-harmonic generation with core electrons. Physical Review A, 88(3): 033848. doi:10.1103/PhysRevA.88.033848.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0014-59E2-8
Zusammenfassung
High-order harmonic generation (HHG) in simultaneous intense near-infrared (NIR) laser light and brilliant x rays above an inner-shell absorption edge is examined. A tightly bound inner-shell electron is transferred into the continuum. Then, NIR light takes over and drives the liberated electron through the continuum until it eventually returns to the cation leading in some cases to recombination and emission of a high-harmonic photon that is upshifted by the x-ray photon energy. We develop a theory of this scenario and apply it to 1s electrons of neon atoms. The boosted high-harmonic light is used to generate a single attosecond pulse in the kiloelectronvolt regime. Prospects for nonlinear x-ray physics and HHG-based spectroscopy involving core orbitals are discussed.