Effect of defect distribution on damage behaviors of optical films

In order to understand the effect of defect distribution on damage behaviors of optical films, the damage morpho-logies, damage processes and absorptive features are experimentally investigated for the multi-layer dielectric reflective films and single-layer sol-gel anti-reflective films. The results show that defects can be classified from functional property besides from morphological and optical properties. In other words, the laser resistance capability of different defects can be distinguished with their damage thresholds. The damage thresholds of optical films are very consistent with the density distributions and thermal absorptivities of defects. According to the damage threshold evolutions, the defects can be effectively classified and judged, and the distribution properties of fu