Share Email Print
cover

Proceedings Paper

Single ionization of atoms in intense laser pulses: evolution from multiphoton to tunnel ionization
Author(s): A. Rudenko; K. Zrost; Th. Ergler; B. Feuerstein; V. L. B. de Jesus; C. D. Schröter; R. Moshammer; J. Ullrich
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We present results of high resolution fully differential measurements on single ionization of He, Ne, and Ar by 7-25 fs linearly polarized 800nm laser pulses at intensities of up to 2.1015 W/cm2. Using a 'Reaction-Microscope' we were able to trace signatures of multiphoton ionization deep into the tunnelling regime. Surprisingly, in the low-energy electron spectra we observed several features (absence of the ponderomotive shifts, splitting of the peaks, their degeneration for few-cycle laser pulses) typical for resonantly-enhanced ionization. Other remarkable features, as the sharp cusp-like momentum distributions in the direction perpendicular to the laser field or the observed minima at zero longitudinal momentum for He and Ne, can be reproduced by semiclassical models, where the electron motion in the combined laser and Coulomb field is treated classically after the tunnelling.

Paper Details

Date Published: 22 May 2006
PDF: 12 pages
Proc. SPIE 6256, ICONO 2005: Ultrafast Phenomena and Physics of Superintense Laser Fields; Quantum and Atom Optics; Engineering of Quantum Information, 62560D (22 May 2006); doi: 10.1117/12.682359
Show Author Affiliations
A. Rudenko, Max-Planck-Institut für Kernphysik (Germany)
K. Zrost, Max-Planck-Institut für Kernphysik (Germany)
Th. Ergler, Max-Planck-Institut für Kernphysik (Germany)
B. Feuerstein, Max-Planck-Institut für Kernphysik (Germany)
V. L. B. de Jesus, Ctr. Federal de Educaçao Tecnológica de Química de Nilópolis (Brazil)
C. D. Schröter, Max-Planck-Institut für Kernphysik (Germany)
R. Moshammer, Max-Planck-Institut für Kernphysik (Germany)
J. Ullrich, Max-Planck-Institut für Kernphysik (Germany)


Published in SPIE Proceedings Vol. 6256:
ICONO 2005: Ultrafast Phenomena and Physics of Superintense Laser Fields; Quantum and Atom Optics; Engineering of Quantum Information

© SPIE. Terms of Use
Back to Top