Under-the-tunneling-barrier recollisions in strong field ionization

Abstract

A new pathway of strong laser field induced ionization of an atom is identified which is based on recollisions under the tunneling barrier. With an amended strong field approximation, the interference of the direct and the under-the-barrier recolliding quantum orbits are shown to induce a measurable shift of the peak of the photoelectron momentum distribution. The scaling of the momentum shift is derived relating the momentum shift to the tunneling delay time according to the Wigner concept. This allows to extend the Wigner concept for the quasistatic tunneling time delay into the nonadiabatic domain. The obtained corrections to photoelectron momentum distributions are also relevant for state-of-the-art accuracy of strong field photoelectron spectrograms in general.

References in corpus (5)

• Experimental evidence for Wigner's tunneling time
• Strong Field Approximation for Systems with Coulomb Interaction
• Tunneling dynamics in multiphoton ionization and attoclock calibration
• Opportunities for detecting ring currents using the attoclock set-up
• The Wigner time delay for laser induced tunnel-ionization via the electron propagator

Cited by in corpus (12)

• It is all about phases: ultrafast holographic photoelectron imaging
• Quantum Battles in Attoscience -- Tunnelling
• Attosecond Ionization Time Delays in Strong-Field Physics
• Reconciling conflicting approaches for the tunneling time delay in strong field ionization
• On the quantum tunneling time: Instantaneous, finite or probabilistic?
• Quantum interference in strong-field ionization by a linearly polarized laser pulse, and its relevance to tunnel exit time and momentum
• Nondipole Coulomb sub-barrier ionization dynamics and photon momentum sharing
• Exploring symmetries in photoelectron holography with two-color linearly polarized fields
• The role of reflections in the generation of a time delay in strong field ionization
• Sub-barrier recollisions and the three classes of tunneling time delays in strong-field ionization
• Sub-barrier pathways to Freeman resonances
• Photoionization of chiral molecules by counter-rotating bicircular laser fields: a chiral attoclock