ABSTRACT
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
optical function can aect the laser damage performance of the nal component. In a paper on the laser-induced damage (LID) performance of various colored glasses at 1.064 µm in the nanosecond regime, Hack and Neuroth show that while the volume LID threshold depends on the type of glass tested, the surface threshold remains constant and is determined by the polishing process adopted (Hack and Neuroth 1982). e surface condition, cosmetically speaking (pits or scratches), can also have an impact. An example of such a phenomenon is given in Figure 12.1. A residual scratch made during the polishing of a silica part is the precursor of LID (wavelength of 351 nm, pulse duration of 2.5 ns, uence of 14 J/cm2).
