Speaker
Description
We investigate strong-field processes in noble-gas atoms driven by intense laser fields in the presence of an additional terahertz (THz) field. Particular emphasis is placed on above-threshold ionization (HATI), where the combined fields enable control over electron trajectories and final momentum distributions. By tuning the relative delay and strength of the THz field, we demonstrate controlled modifications of photoelectron spectra and directional asymmetries.
Our study is based on theoretical modeling within the strong-field approximation (SFA), allowing us to analyze the influence of the THz field on electron propagation and rescattering mechanisms. The results show that the THz field acts as an effective control parameter, predominantly affecting continuum dynamics and enabling selective steering of electron trajectories.
This approach establishes a consistent framework for analyzing and controlling strong-field electron dynamics, and provides a basis for tailoring recollision-driven processes, including coherent high-frequency radiation generation, in combined laser–THz fields.