title: Optical coatings deposited by reactive ion plating.
abstract: The effect of different reactive ion-plating process parameters on the transmittance and the reflectance of single layers of HfO(2), Ta(2)O(5), and SiO(2) are investigated. The optical constants obtained for these three as-deposited materials are presented. Laser-damage threshold trends are examined on single- and double-layer coatings at 1064 nm and on high-reflectance coatings for 248 nm. Single- and double-cavity filters are constructed for the UV (< 1-nm bandwidth) and near-infrared (50-nm bandwidth) regions, respectively. After the filters are postannealed in air at 375 °C for several hours, a shift in the peak wavelengths is observed along with a substantial increase in the peak transmittance. As expected, no significant wavelength shifts result from changes in the humidity of the ambient atmosphere.
authors.forename: A J
authors.initials: AJ
authors.lastname: Waldorf
authors.forename: J A
authors.initials: JA
authors.lastname: Dobrowolski
authors.forename: B T
authors.initials: BT
authors.lastname: Sullivan
authors.forename: L M
authors.initials: LM
authors.lastname: Plante