Experimental setup to record the spectrum of the plasma interferogram.
Interferograms (spectral) recorded (a) without plasma, (b) with plasma from −50 ps to 250 ps, and (c) with plasma from 150 ps to 450 ps (time axis is from right to left, target surface is at the bottom of the picture, and fringe width is 2.6 μm in the plasma plane). (Timing is with respect to pump pulse.)
Temporal evolution of the plasma expansion velocity as derived from the shift in diffraction pattern of Fig. 2(b) (lower; square) compared with the expansion velocity profile from shadowgraphy (upper; circle).
Temporal evolution of the plasma density (chord averaged) at different distances from the target surface calculated from the fringe shifts in Fig. 2(c); the dashed lines are to guide the eyes.
Article metrics loading...
Full text loading...