Fig. 1. Yield of NSDI for CO₂ in LP, CP, and CRTC laser fields under different laser intensities

Fig. 2. Electron recollision time distribution for CRTC laser field and LP laser field under different laser field intensities.(a) (e) 0.4×1014W/cm2; (b) (f) 1.0×1014W/cm2; (c) (g) 2.5×1014W/cm2; (d) (h) 4.0×1014W/cm2

Fig. 3. Electron return energy of NSDI for CO₂ in LP and CRTC laser fields under different laser intensities

Fig. 4. Comparison histograms of SI rate and DI rate for LP laser field and CRTC laser field. (a) SI rate; (b) DI rate

Fig. 5. Suppression barrier in LP and CRTC laser fields under different laser intensities. (a) 0.8×1014W/cm2; (b) 1.5×1014W/cm2;(c) 2.2×1014W/cm2

Fig. 6. Electron trajectories of CRTC and LP laser fields with laser intensities of 0.4×1014W/cm2 and 2.0×1014W/cm2.(a) (b) CRTC laser field; (c) (d) LP laser field

Fig. 7. Electric field structure and negative vector potential curve of CRTC laser field. Three lobe structure represents electric field structure, triangle structure represents negative vector potential of CRTC laser pulse, and black point represents structure of CO₂

Fig. 8. RESI and RII in the two laser fields and momentum distribution (MD) of the first electron (return electron) in CRTC laser field under different laser intensities. (a) RESI and RII in the two laser fields; (b) MD of the first electron (return electron) in CRTC laser field at 3.0×1014W/cm2; (c) MD of the first electron (return electron) in CRTC laser field at 4.0×1014W/cm2; (d) MD of the first electron (return electron) in CRTC laser field at 5.0×1014W/cm2

Fig. 9. Momentum distribution of the second electron and total momentum distribution of two electrons under different CRTC laser intensities. (a) (b) 3.0×1014W/cm2; (c) (d) 4.0×1014W/cm2; (e) (f) 5.0×1014W/cm2