1030-nm nanosecond LIDT of dielectric coatings on yttrium aluminium garnet

Abstract

Laser-induced damage threshold (LIDT) of dielectric coatings prepared on monocrystalline neodymium-doped yttrium aluminium garnet (YAG) substrates was studied. Various coating designs were prepared using either reactive or ionassisted e-beam deposition technology and tested at 1030 nm 10 ns in r-on-1 mode according to the ISO 21254 standard. Measured damage thresholds were compared and LIDT was discussed with respect to thin-film design and coating technology.