Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy
Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy

MBI Staff Member – Personal info

Prof. Dr. Ulrich Eichmann

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

B2: Imaging and Coherent X-rays
Building B, 2.10

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 Publications

  1. Isolated-core quadrupole excitation of highly excited autoionizing Rydberg states

    M. Genevriez , U. Eichmann

     Physical Review A 107 (2023) 012817/1-9
  2. Chapter One - Frustrated tunneling ionization: building a bridge between the internal and macroscopic states of an atom

    U. Eichmann, S. Patchkovskii

     Advances In Atomic, Molecular, and Optical Physics, Elsevier, Ed.: L. F. DiMauro, H. Perrin, S. F. Yelin 72 (2023) 1-88
  3. Probing electron and hole colocalization by resonant four-wave mixing spectroscopy in the extreme ultraviolet

    H. Rottke, R. Y. Engel, D. Schick, J. O. Schunck, P. S. Miedema, M. C. Borchert, M. Kuhlmann, N. Ekanayake, S. Dziarzhytski, G. Brenner, U. Eichmann, C. von Korff Schmising, M. Beye, S. Eisebitt

     Science Advances 20 (2022) eabn5127/1-20
  4. Structure and electron dynamics of planetary states of Sr below the Sr+7d and 8p thresholds

    M. Génévriez, C. Rosen, U. Eichmann

     Physical Review A 104 (2021) 012812 /1-12
  5. Dissecting strong-field excitation dynamics with atomic-momentum spectroscopy

    A. W. Bray, U. Eichmann, S. Patchkovskii

     Physical Review Letters 124 (2020) 233202/1-6
  6. Photon-Recoil Imaging: expanding the view of nonlinear x-ray physics

    U. Eichmann, H. Rottke, S. Meise, J.-E. Rubensson, J. Söderström, M. Agåker, C. Såthe, M. Meyer, T. M. Baumann, R. Boll, A. De Fanis, P. Grychtol, M. Ilchen, T. Mazza, J. Montano, V. Music, Y. Ovcharenko, D. E. Rivas, S. Serkez, R. Wagner, S. Eisebitt

     Science 369 (2020) 1630-1633
  7. Limit on excitation and stabilization of atoms in intense optical laser fields

    H. Zimmermann, S. Meise, A. Khujakulov, A. Magaña, A. Saenz, U. Eichmann

     Physical Review Letters 120 (2018) 123202/1-6
  8. Unified time and frequency picture of ultrafast atomic excitation in strong laser fields

    H. Zimmermann, S. Patchkovskii, M. Ivanov, U. Eichmann

     Physical Review Letters 118 (2017) 013003/1-5
  9. Strong-Field Induced Atomic Excitation and Kinematics

    U. Eichmann

     Ultrafast Dynamics Driven by Intense Light Pulses 86 Springer Series on Atomic, Optical, and Plasma Physics (2016) 3-25
  10. Atomic excitation and acceleration in strong laser fields

    H. Zimmermann, U. Eichmann

     Physica Scripta 91 (2016) 104002/1-11