Probing Molecular Frame Wigner Time Delay and Electron Wavepacket Phase Structure of CO Molecule

The time delay of photoelectron emission serves as a fundamental building block to understand the ultrafast electron dynamics in strong-field physics. Here, we study angular streaking CO molecules by using two-color ( 400 + 800 nm) corotating circularly polarized fields. By coincidently measuring photoelectrons with dissociative ions, present molecular frame distributions respect instantaneous driving electric field signatures. We develop semiclassical nonadiabatic quantum-trajectory Monte Carlo (MO-QTMC) model that fully captures experimental observations and further ab initio simulations. disentangle orientation-resolved contribution anisotropic ionic potential orbital structure on measured distributions. Furthermore, analyzing interference patterns, extract sub-Coulomb-barrier phase distribution wavepacket reconstruct orientation- energy-resolved Wigner frame. Holographic bicircular fields can be used for probing polyatomic future.