Phase and space resolved intensity of the microplasma channel. The columns correspond to the temporal coordinate. The rows correspond to the spatial coordinate along the channel. Each pixel of the time coordinate corresponds to 0,2 microseconds for figure 7 and 8 and to 0,1 microseconds for figure 18. Each pixel of the spatial coordinate corresponds to 16 micrometres for figure 7 and 8 and to 13,2 micrometres for figure 18.