MBI staff member
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Ulrich Eichmann

eichmann@mbi-berlin.de

+49 30 6392 1371

Scientist
Member of Project 2.2 "Strong-field Few-body Systems"

 

Research Topic


Short introduction:

 

Our group's research focus is set on the investigation of atomic ionization dynamics in strong laser fields, where the laser intensities cover a range from 1014 W/cm2 to 1019 W/cm2. Earlier research highlights embrace results on simultaneous double tunneling, suppression of non-sequential ionization in relativistic laser fields, and core relaxation effects in relativistic laser fields. More recently, the focus of our investigations has shifted towards strong-field processes that lead to a) excited neutral atoms, b) neutral excited fragments after strong-field dissociation of molecules, and c) high survival rates of Rydberg atoms. Moreover, the survival of atoms in neutral excited states is accompanied by kinematic effects on neutral atoms in the focused laser beam, which we investigate using a direct imaging technique of excited atoms.

The figure shows the color-coded distribution of deflected (accelerated) neutral He atoms in a focused short-pulse laser beam with an intensity of 8x1015W/cm2.

 



Curriculum vitae

 

  • 2012 Apl.-Professor, TU Berlin, Inst. für Optik und Atomare Physik
  • 2002 Privatdozent, TU Berlin, Institut für Optik und Atomare Physik
  • 2001 Habilitation, Physics, TU Berlin
  • since 1993 scientist, Department B2, Max-Born Institut, Berlin
  • 1992-1993 DFG research grant, NIST, Boulder, with Dr. D.J. Wineland
  • 1991-1992 Scientific research assistant (C1), Univ. of Freiburg, project leader, Sonderforschungsbereich 276, Univ. of Freiburg
  • 1990-1991 Scientific researcher, Sonderforschungsbereich 276, Univ. of Freiburg
  • 1986 DAAD scholarship, Univ. of Virginia, Charlottesville with Prof. T. F. Gallagher
  • 1985-1990 Doctoral thesis: Electron correlation in two electron atoms with Prof. Sandner, Univ. of Freiburg
  • 1977-1984 Physics studies, TU Berlin and Univ. of Freiburg

 

Selected Recent Research Highlights


MBI Highlights 2015: The exciting story of He atoms in strong laser fields

MBI Highlights 2014: Acceleration of atoms in an intense standing light wave

Nature Photonics Research Highlights 2013: Rydberg states: Surprising stability

MBI Highlights 2009: Acceleration of neutral atoms in strong short-pulse laser fields


Publications


Publications at MBI


List of peer-reviewed publications with no relation to MBI:

  • U. Eichmann, J. C. Bergquist, J. J. Bollinger, J. M. Gilligan, W. M. Itano, D. J. Wineland, and M.
    G. Raizen
    Young's Interference Experiment with Light Scattered from Two Atoms
    Phys. Rev. Lett. 70, 2359 (1993).
  • U. Eichmann, V. Lange, and W. Sandner
    The Dipole Structure of Planetary Atoms
    Phys. Rev. Lett. 68, 21 (1992)
  • W. Sandner, U. Eichmann, and V. Lange
    Resonant Multiphoton Excitation of Planetary Atoms
    Arab. Journal for Science and Engineering 17, 233 (1992)
  • V. Lange, M. A. Khan, U. Eichmann, and W. Sandner
    Rydberg states of the strontium ion
    Z. Phys. D 18, 319 (1991)
  • V. Lange, M. Aymar, U. Eichmann, and W. Sandner
    Barium 6pns (j=1) autoionizing Rydberg states: comparison between experiment and R-matrix
    calculations

    J. Phys. B 24, 91 (1991)
  • V. Lange, U. Eichmann, and W. Sandner
    Photoionization of excited Barium 6s6p (1P1)
    Phys. Rev. A 44, 4737 (1991)
  • U. Eichmann, V. Lange, and W. Sandner
    Positional Correlation in Laser-Excited Three-Body Coulomb Systems
    Phys. Rev. Lett. 64, 274 (1990)
  • U. Eichmann, P. Brockmann, V. Lange, and W. Sandner
    Five laser excitation of Planetary atoms
    J. Phys. B 22, L361 (1989)
  • V. Lange, U. Eichmann, and W. Sandner
    Autoionising 4p1/2, 3/2nsJ = 1 Rydberg series in calcium
    J. Phys. B 22, L245 (1989)
  • U. Eichmann, J. L. Dexter, E. Y. Xu, and T. F. Gallagher
    Microwave ionization and excitation of Ba Rydberg atoms
    Z. Phys.D 11, 187 (1989)
  • R. R. Jones, Y. Zhu, U. Eichmann, and T. F. Gallagher
    Multiphoton double ionization of Barium
    IEEE Trans. Plasma Sc.16, 534 (1988)
  • U. Eichmann, K. Richter, D. Wintgen, and W. Sandner
    Scaled energy spectroscopy and its relation with periodic orbits
    Phys.Rev. Lett. 61, 2438 (1988)
  • U. Eichmann, Y. Zhu, and T. F. Gallagher
    Multiphoton double ionisation of Ba via Ba+
    J. Phys. B 20, 4461 (1987)
  • W. Sandner, U. Eichmann, V. Lange, and M. Völkel
    Barium autoionising Rydberg series in the vicinity of a shape resonance
    J. Phys. B 19, 51 (1986)
  • W. Sandner, G. A. Ruff, V. Lange, and U. Eichmann
    Laser spectroscopic investigation and detection of Rydberg atoms by off resonant core excitation
    Phys. Rev. A 32, 3794 (1985)

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