Chemical Removal of Optical Coatings.
Abstract
Thin-film optical coatings are normally removed by polishing to reclaim valuable substrates. Selective chemical reaction can replace the polishing process for the removal of metallic and dielectric coatings. A unique advantage of chemical removal is the selectivity. Certain layers of an optical coating design can be removed while leaving the remaining layers intact. Selectivity is virtually impossible with a polishing process since the polishing compound is usually harder than the coatings. Optical coatings of gold, silver, chromium, thorium fluoride and zinc selenide were removed from substrates of molybdenum, titanium-zirconium-molybdenum alloy, germanium and silicon. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1979
- Accession Number
- ADA105395
Entities
People
- Earl W. Wasson
Organizations
- Air Force Research Laboratory