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2.2 Strong-field Few-body Physics
Project coordinator(s): H. Rottke, F. Morales
Overview

Project Objectives

On a sub-femtosecond temporal and Ångström spatial scale the project aims at

  • Understanding the strong field induced dynamics in atoms and molecules
  • Employing strong field processes as a tool for imaging and understanding atomic and molecular electron dynamics and molecular structural changes

We put specific focus on the fundamental aspects of strong field induced multi-electron dynamics, on the excitation of neutrals, on the forces exerted on these neutrals, and on the role played by molecular structure and dynamics. Based on the knowledge of the fundamental strong field interaction mechanisms gained we employ these phenomena to track and image molecular dynamics, of both the electronic and the nuclear degrees of freedom and of their coupling, in real-time through strong field ionization mapping and high order harmonic spectroscopy. The strong field regime of interaction of light with matter is typically entered at light intensities beyond 1013 Watt/cm2 in the infrared spectral range. There the electric field of the light wave starts to become comparable with the inner-atomic/inner-molecular field experienced by the valence electrons. We tackle the objectives from the experimental side and closely linked therewith by a focused theory presently on four topical research field.

Topics

Topic 1: Time resolved single- and multi-electron strong field phenomena
Topic 2: Dynamics of strong field ionization of ordered structures
Topic 3: Probing molecular dynamics by strong field ionization
Topic 4: High harmonic generation spectroscopy

Key Publications

SSB12 D. Shafir, H. Soifer, B. Bruner, M. Dagan, Y. Mairesse, S. Patchkovskii, M. Ivanov, O. Smirnova and N. Dudovich
Resolving the time when electron exits from the tunneling barrier
Nature 485, (2012) 343-346
URL, DOI or PDF-File
HRG11 Y. Huismans A. Rouzée A. Gijsbertsen J. H. Jungmann A. S. Smolkowska P. S. W. M. Logman F. Lépine C. Cauchy S. Zamith T. Marchenko J. M. Bakker G. Berden B. Redlich van der Meer, A. F. G. H. G. Muller W. Vermin K. J. Schafer M. Spanner M. Yu. Ivanov O. Smirnova D. Bauer S. V. Popruzhenko M. J. J. Vrakking
Time-resolved holography with photoelectrons
Science Express 331 (2011) 61-64
URL, DOI or PDF-File
MRP11 F. Morales M. Richter S. Patchkovskii O. Smirnova
Imaging the Kramers-Henneberger atom
P. Natl. Acad. Sci. USA 108 (2011) 16906-16911
URL, DOI or PDF-File
MNG09 B. Manschwetus T. Nubbemeyer K. Gorling G. Steinmeyer U. Eichmann H. Rottke W. Sandner
Strong laser field fragmentation of H2: Coulomb explosion without double ionization
Phys. Rev. Lett. 102 (2009) 113002/1-4
URL, DOI or PDF-File
ENR09 U. Eichmann T. Nubbemeyer H. Rottke W. Sandner
Acceleration of neutral atoms in strong short-pulse laser fields
Nature 461 (2009) 1261-1264
URL, DOI or PDF-File

Highlights