Novel perfluorinated antireflective and protective coating for KDP and other optical materials

A new commercially available perfluorinated organic polymer has been used to prepare a combined quarterwave AR and protective coating for KDP and other optical materials. Coatings are applied from solution at room temperature by spin or dip they are fully dense and have a refractive index of 1. 29. The laser damage threshold at 1064 nm and 355 nm is the highest that we have ever measured for an AR coating material. 1.