Fig. 1. Density distribution of macro-particles and current density distribution

Fig. 2. x=145 λ₀，y=25 λ₀，diagram of induced magnetic field B_x as a function of t

Fig. 3. The curves of the induced magnetic field B_x changing with the input magnetic field strength B₀ and input laser intensity I₀

Fig. 4. The induced magnetic field B_x changes with the plasma density n₀，and the curve is fitted linearly