M. Shimbo et al., Estimation of the life of synthetic silica glass under long time irradiation by ArF excimer laser, JPN J A P 2, 38(8A), 1999, pp. L848-L850
The life of synthetic silica glass under ArF excimer laser irradiation was
estimated in relation to the laser energy density by in-situ photoabsorptio
n measurements under exposure to more than 10(7) shots. Dissolved hydrogen
increases the life whereas OH in the glass scarcely influences it. Usual ph
otomask glass is found to be tolerable to more than 10(11) shots at 0.1 mJ/
cm(2) of laser irradiation intensity.