127670.fig.0010a
(a)
127670.fig.0010b
(b)
Figure 10: Carbon plasma harmonic spectra using the 1300 nm (a) and 780 nm (b) probe pulses. The energies of probe pulses were 0.2 mJ (a) and 0.54 mJ (b). Ablation was carried out using 20 ps, 780 nm, and 1 kHz laser pulses [46].