Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie im Forschungsverbund Berlin e.V.

MBI-Mitarbeiter - Persönliche Daten

Prof. Dr. Ulrich Eichmann

ulli.eichmann(at)mbi-berlin.de
+49 30 6392 1371

B2: Imaging and Coherent X-rays
Haus B, 2.14

Position

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

Research

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.

MBI Publikationen

  1. Strong-Field Excitation of Helium: Bound State Distribution and Spin Effects

    H. Zimmermann, J. Buller, S. Eilzer, U. Eichmann

     Physical Review Letters 114 (2015) 123003/1-5
  2. Excited state distribution and spin-effects in strong-field excitation of neutral Helium

    H. Zimmermann, S. Eilzer, U. Eichmann

     Journal of Physics Conference Series 635 (2015) 092134/1-2
  3. Steering neutral atoms in strong laser fields

    S. Eilzer, U. Eichmann

     Journal of Physics B-Atomic, Molecular and Optical Physics 47 (2014) 204014/1-8
  4. Strong-field Kapitza-Dirac scattering of neutral atoms

    S. Eilzer, H. Zimmermann, U. Eichmann

     Physical Review Letters 112 (2014) 113001/1-5
  5. Excitation of He atoms in the strong-field tunneling regime

    T. Nubbemeyer, U. Eichmann

     European Journal of Physics 22 (2013) 2267-2272
  6. Observing Rydberg atoms to survive intense laser fields

    U. Eichmann, A. Saenz, S. Eilzer, T. Nubbemeyer, W. Sandner

     Physical Review Letters 110 (2013) 203002/1-5
  7. Routes to formation of highly excited neutral atoms in the breakup of strongly driven H2

    A. Emmanouilidou, C. Lazarou, A. Staudte, U. Eichmann

     Physical Review A 85 (2012) 011402 /1-4
  8. New method for laser driven ion acceleration with isolated, mass-limited targets

    T. Paasch-Colberg, T. Sokollik, K. Gorling, U. Eichmann, S. Steinke, M. Schnürer, P. V. Nickles, A. A. Andreev, W. Sandner

     Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors and associated Equipment 653 (2011) 30-34
  9. Von Null auf 200 km/h in 40 Femtosekunden

    T. Nubbemeyer, W. Sandner, U. Eichmann

     Physik in unserer Zeit 41 (2010) 13-13
  10. Laser-driven ion acceleration using isolated mass-limited spheres

    T. Sokollik, T. Paasch-Colberg, K. Gorling, U. Eichmann, M. Schnürer, S. Steinke, P. V. Nickles, A. Andreev, W. Sandner

     New Journal of Physics 12 (2010) 113013/1-12