Sub-Cycle Interference upon Tunnel-Ionization by Counterrotating Two-Color Fields

Abstract

We report on three-dimensional (3D) electron momentum distributions from single ionization of helium by a laser pulse consisting of two counterrotating circularly polarized fields (390 nm and 780 nm). A pronounced 3D low energy structure and sub-cycle interferences are observed experimentally and reproduced numerically using a trajectory based semi-classical simulation. The orientation of the low energy structure in the polarization plane is verified by numerical simulations solving the time dependent Schrödinger equation.

arXiv comment5 pages, 4 figures, PRA Rapid Communications accepted

References in corpus (7)

• Attosecond double-slit experiment
• Intracycle and Intercycle Interferences in Above-Threshold Ionization: the Time Grating
• Semiclassical two-step model for strong-field ionization
• Non-Sequential Double Ionization by Counter Rotating Circularly Polarized Two-Color Laser Fields
• Streaking temporal double slit interference by an orthogonal two-color laser field
• Laser-sub-cycle two-dimensional electron momentum mapping using orthogonal two-color fields
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• Multielectron polarization effects in strong-field ionization: Narrowing of momentum distributions and imprints in interference structures
• Semiclassical two-step model for ionization by a strong laser pulse: Further developments and applications
• Evidence of ac-Stark-shifted resonances in intense two-color circularly polarized laser fields
• Quantum interference and imaging using intense laser fields
• Exploring symmetries in photoelectron holography with two-color linearly polarized fields
• Experimental fingerprint of the electron's longitudinal momentum at the tunnel exit in strong field ionization
• Chiral Electron Momentum Distribution upon Strong-Field Ionization of Atoms
• Non-adiabatic Strong Field Ionization of Atomic Hydrogen