Damage Threshold Dependence of Optical Coatings on Substrate Materials,
NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH
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Damage threshold dependence on substrate materials was investigated for TiO2, ZrO2, SiO2, MgF2, ZnS, and single and TiO2SiO2 multilayers. The results show that the damage threshold increases with increasing substrate thermal conductivity for single layers and AR coatings and remains the same for HR coatings. With the help of localized absorption measurement and in-situ damage process analysis, these phenomena were well correlated with local absorption-initiated thermal damage mechanism.
- Coatings, Colorants and Finishes