title: Improved scratch resistance for antireflective coatings on sapphire.
abstract: Antireflective coatings on sapphire were optimized by variation of the coating design, the total thickness, and the highly refractive material used. The coatings were characterized with a focus on their scratch resistance. An increased resistance against scratching wear is shown for hafnia-containing coatings with a total thickness of about 500 nm.
authors: Fraunhofer-Institute for Applied Optics and Precision Engineering, Jena, Germany. christoph.goedeker@iof.fraunhofer.de
authors: Christoph
authors: C
authors: Gödeker
authors: Ulrike
authors: U
authors: Schulz
authors: Norbert
authors: N
authors: Kaiser