Low-Energy Structures in Strong Field Ionization Revealed by Quantum Orbits

Tian-Min Yan, S. V. Popruzhenko, M. J. J. Vrakking, and D. Bauer
Phys. Rev. Lett. 105, 253002 – Published 13 December 2010

Abstract

Experiments on atoms in intense laser pulses and the corresponding exact ab initio solutions of the time-dependent Schrödinger equation (TDSE) yield photoelectron spectra with low-energy features that are not reproduced by the otherwise successful work horse of strong field laser physics: the “strong field approximation” (SFA). In the semiclassical limit, the SFA possesses an appealing interpretation in terms of interfering quantum trajectories. It is shown that a conceptually simple extension towards the inclusion of Coulomb effects yields very good agreement with exact TDSE results. Moreover, the Coulomb quantum orbits allow for a physically intuitive interpretation and detailed analysis of all low-energy features in the semiclassical regime, in particular, the recently discovered “low-energy structure” [C. I. Blaga et al., Nature Phys. 5, 335 (2009) and W. Quan et al., Phys. Rev. Lett. 103, 093001 (2009)].

  • Figure
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  • Received 18 August 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.253002

© 2010 The American Physical Society

Authors & Affiliations

Tian-Min Yan1,2, S. V. Popruzhenko3, M. J. J. Vrakking4,5, and D. Bauer1,*

  • 1Institut für Physik, Universität Rostock, 18051 Rostock, Germany
  • 2Max-Planck-Institut für Kernphysik, Postfach 103980, 69029 Heidelberg, Germany
  • 3National Research Nuclear University “Moscow Engineering Physics Institute,” Kashirskoe Shosse 31, 115409, Moscow, Russia
  • 4FOM-Institute AMOLF, Science Park 113, 1098 XG Amsterdam, The Netherlands
  • 5Max-Born-Institut, Max-Born-Straße 2A, 12489 Berlin, Germany

  • *Corresponding author. dieter.bauer@uni-rostock.de

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Issue

Vol. 105, Iss. 25 — 17 December 2010

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