Fig. 2.

Example of a typical waveform of the current signal of a 25.9 mJ laser pulse shot on the PZT sensor in a long timescale of 20 μs (a), and in the magnified time scale (b) for the first pulse.
Example of a typical waveform of the current signal of a 25.9 mJ laser pulse shot on the PZT sensor in a long timescale of 20 μs (a), and in the magnified time scale (b) for the first pulse.