The first line shows the oscillograms, the second line presents the corresponding Poincaré maps of the peak intensities of Q-switched pulses I_n+1 = f(I_n), and the third line presents histograms used for calculating the peak entropy (embedded dimension m = 4 and 5). Tree different operation regimes are presented: 1st column (a) corresponds to a stable Q-switched regime, 2nd column: (b) corresponds to an intermittency regime, 3th column (c) corresponds to a chaotic regime.