Fig. 1. (a) The distribution of the Poynting flux (normalized to the peak intensity) of TEM(1,0) mode laser pulse. (b) The intensity profile of TEM(1,0) mode (blue solid line) and TEM(0,0) mode (red dashed line).

Fig. 2. (a) The initial density profile of the plasma. (b) The longitudinal electric field along $y=-8{\it\lambda}$ at $t=75T_{0}$. (c) and (d) are the electron density and current distribution at $190T_{0}$.

Fig. 3. (a) and (b) show the $z$-component of the magnetic field distribution at $140T_{0}$ and $340T_{0}$. (c) Contributions of different terms in Ampère–Maxwell law at $140T_{0}$ along $y=0$, transversely averaged inside the current sheet ($-{\it\lambda}). (d) is the corresponding profile at $340T_{0}$. (e) is the comparison of the longitudinal electric field along the center ($y=0$) and the effective laser axis ($y=-8{\it\lambda}$) at $140T_{0}$. (f) is the corresponding one at $340T_{0}$.

Fig. 4. The electron longitudinal momentum $p_{x}$ at $140T_{0}$ (a) and $340T_{0}$ (b). The figures are plotted by selecting the electrons with maximum energy in each mesh cell. The longitudinal momentum distribution comparison between current sheet electrons and side electrons at $t=140T_{0}$ and $340T_{0}$ are plotted in (c) and (d), respectively.