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          Institute: MPI für Kernphysik     Collection: Theoretical Quantum Dynamics     Display Documents



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ID: 516749.0, MPI für Kernphysik / Theoretical Quantum Dynamics
High Harmonic Generation Via Continuum Wave-Packet Interference
Authors:Kohler, Markus C.; Ott, Christian; Raith, Philipp; Heck, Robert; Schlegel, Iris; Keitel, Christoph H.; Pfeifer, Thomas
Language:English
Date of Publication (YYYY-MM-DD):2010-11-11
Title of Journal:Physical Review Letters
Journal Abbrev.:PRL
Volume:105
Issue / Number:20
Start Page:1
End Page:4
Sequence Number of Article:203902
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:High-order harmonic generation (HHG) is investigated theoretically in the over-the-barrier ionization regime revealing the strong signature of interference between two separately ionized and separately propagating free wave packets of a single electron. The interference leads to the emission of coherent light at a photon energy corresponding to the kinetic-energy difference of the two recolliding electron quantum paths, thus complementary to the well-known classical three-step picture of HHG. As will be shown by time-frequency analysis of the emitted radiation, the process entirely dominates the coherent HHG emission after the atomic ground state has been depleted by a strong field. Moreover, it can be isolated from the continuum–bound harmonics via phase matching.
External Publication Status:published
Document Type:Article
Communicated by:C.H. Keitel
Affiliations:MPI für Kernphysik/ Group of C.H. Keitel
MPI für Kernphysik/Independent Research Groups/Spektroskopie und Quantenkontrolle mit starken Laserfeldern im Attosekundenbereich (Thomas Pfeifer)
Identifiers:DOI:10.1103/PhysRevLett.105.203902
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