The size prediction of potential inclusions embedded in the sub-surface of fused silica by damage morphology

Abstract

A model for predicting the size ranges of different potential inclusions initiating damage on the surface of fused silica has been presented. This accounts for the heating of nanometric inclusions whose absorptivity is described based on Mie Theory. The depth profile of impurities has been measured by ICP-OES. By the measured temporal pulse profile on the surface of fused silica, the temperature and thermal stress has been calculated. Furthermore, considering the limit conditions of temperature and thermal stress strength for different damage morphologies, the size range of potential inclusions for fused silica is discussed.

Keywords

• laser-induced breakdown
• polishing
• optical materials
• 79.20.ds
• 42.62.-b
• 42.70.ce