Conveners
Strong-field ionization
- Claus Ropers
Jochen Mikosch
(Max-Born-Institut, Berlin)
16/02/2018, 11:10
Invited talk
Talk
Electrons released by strong-field ionization from atoms, molecules, or in solids can be accelerated in the oscillating laser field and driven back to their ion core. The ensuing interaction, phase-locked to the optical cycle, initiates the central processes underlying attosecond science. A key long-standing assumption regards the returning electron wavepacket as a plane wave. Here we study...
Ulf Saalmann
(Max Planck Institute for the Physics of Complex Systems, Dresden)
16/02/2018, 11:40
Contributed talk
Talk
It is shown that two-photon strong-field ionization of atoms can be extremely well controlled -- basically switching between no and complete ionization -- with minor modification of the laser pulse. The underlying mechanism will be explained for a model system and realistic calculations for single-active-electron atoms are presented.
Marcel Mudrich
(Aarhus University)
16/02/2018, 12:00
Contributed talk
Talk
Nanoplasmas formed from doped helium nanodroplets by irradiation with intense near-infrared fs-pulses feature peculiar properties. A helium ionization avalanche is triggered by tunnel ionization of the dopant cluster at comparatively low light intensities (~1014 W/cm2). Subsequent light absorption is enhanced by resonances due to nanoplasma anisotropies [PRL 107, 173402 (2011)] and expansion...
Manfred Lein
(Leibniz Universität Hannover)
16/02/2018, 12:20
Contributed talk
Talk
In previous studies of the attosecond scale temporal structure of
strong-field ionization in atoms driven by few-cycle pulses using
the "attoclock" scheme,
a one-to-one correspondence between photoelectron momentum and
time of ionization on the basis of outgoing electron
trajectories has been used. We introduce a purely quantum mechanical
and trajectory-free definition of the ionization...
