Femtosecond laser induced damage of optical coatings

Single pulse laser-induced damage threshold (LIDT) was investigated for electron beam evaporated optical coatings, including ZrO2 and HfO2 single layers, ZrO2/SiO2 and HfO2/SiO2 high-reflective (HR) coatings, using a 50-fs, 800-nm Ti:sapphire laser. The experimental results showed that the damage th