(a) Schematic of HHG in a mixed-gas jet composed of two separate Ar and He jets that are symmetrically displaced by Δz from the driving field focal plane. (b) HHG spectral intensity from AI-based 3D-TDSE macroscopic simulations as a function Δz. (c) HHG spectra for three specific cases at Δz = −120 μm, 0 μm, and 120 μm. (d) HHG spectral intensity from the TSM, for a driving peak intensity of 2.84 × 10¹⁴ W/cm², reproducing the numerical advanced result simulations presented in (b).