Fig. 1. (a) Yield of Mg²⁺, (b) number of DI trajectories and (c) ionization rate of the tunneling electrons calculated with the ADK theory^[43] versus the relative phase at intensities of 0.05 PW/cm² (black line with squares), 0.07 PW/cm² (red line with dots), and 0.09 PW/cm² (blue line with triangles).

Fig. 2. The releasing angle distributions of the electrons for the SI (black squares) and the NSDI events (red dots) for the case of Δφ = 0.6π (a), 0.8π (b), 1.0π (c), and 1.2π (d) in counter-rotating TCCP fields, respectively. The releasing angle distribution of the electrons for the SI events (black squares), the recolliding (red dots) and the bound electrons (blue triangles) in NSDI for the case of Δφ = 0.6π (e), 0.8π (f), 1.0π (g), and 1.2π (h). The combined intensity of the laser field is 0.05 PW/cm².

Fig. 3. The ion momentum distribution for the case of Δφ = 0.6π (a), 0.8π (b), 1.0π (c), and 1.2π (d) with counter-rotating TCCP fields, respectively. The white line with arrow acts as guide to the eyes regarding the rotation of the ion momentum distribution. The insets in (a)–(d) show the Lissajous curves of the counter-rotating TCCP laser fields. The intensity of the laser field is 0.05 PW/cm².

Fig. 4. (a) The trajectory probability, and (b) the yield of RII and RESI versus the relative phases Δφ for the intensity of 0.5 PW/cm².

Fig. 5. The probability distribution of the recollision energy for the relative phases Δφ = 0.6π (a), 0.8π (b), 1.0π (c), and 1.2π (d).

Fig. 6. Probability distribution of the recollision time for Δφ = 0.6π (a), 0.8π (b), 1.0π (c), and 1.2π (d). The red and blue solid curves represent the 400-nm and 800-nm laser fields, respectively.