Optical Interference Coatings for the Ultraviolet.
Abstract
All dielectric multilayer reflectors were constructed with a radiant reflectance R in excess of 99% at a wavelength of 250 nm. The stacks contained the following materials: hafnia, silica, magnesium fluoride, and yttria. Reflectors were also prepared using alternate layers of silica and hafnia. A maximum reflectance in excess of 0.995 was obtained at 355 nm. Spectroreflectometry was used to determine the refractive index versus wavelength of the following optical coating materials: hafnia, yttria, lanthanum sesquioxide, and tantalum pentoxide. All of these materials, with the exception of the latter, are optically transparent to wavelengths as short as 250 nm. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 31, 1978
- Accession Number
- ADA058527
Entities
People
- Philip W. Baumeister
Organizations
- University of Rochester