
259Quartz and Glasses
Chapter 9
keep almost the same size with following shots (Runkel etal. 1999). In Nd-doped laser
glass, micron-size platinum inclusions generate damage sites that rst grow but stabilize
in size at several hundred microns in diameter (Razé etal. 2003).
e exit surface damage growth has been generally described by an exponential
increase in diameter with the number of shots at xed uence (Figure 9.8):
d
N
= d
0
· exp[α
d
(ϕ) · N] (9.7)
2
SiO
2
pansy depth
SiO
2
pansy depth
5
1
Size (μm)
3
2
4
2
6
4
10 15 20 25 30
0
0
246810
FIGURE 9.7 (a) Damage sites size versus pulse duration for SiO
2
. (b) Dama ...