SURFACE INCLUSION ADHESION OF OPTICAL COATINGS

Evaluation of laser-induced damage in optical coatings employing a sur face inclusion adhesion layer model is presented. The effects of therm al and optical absorption of an inclusion adhesion layer on a coating surface irradiated by a laser pulse can induce coating damage. The eff ects of the adhesion layer extinction coefficient, thickness, and heat conductivity on the laser-induced damage threshold of the coating are investigated by thin-film temperature field distribution analysis. La ser-induced damage on high-reflectance (HR) multilayer and ion-beam-sp uttered coatings are analyzed.