IMPROVED DIELECTRIC FILMS FOR OPTICAL AND SPACE APPLICATIONS,
Abstract
The designer of multilayer antireflection coatings, protected front surface mirrors, and filmed surfaces for space applications has often been seriously hampered by the fact that the number of oxides suitable for producing durable and optically transparent films with a great variety of refractive indices has been quite restricted. Many oxides, when evaporated from directly heated tungsten boats, become decomposed by reaction with the tungsten heater and condense on the substrates in the form of strongly absorbing films. New deposition techniques and treatments have greatly increased the number of oxides that can now be deposited in the form of optically nonabsorbing coatings of Si2O3, SiO2, Al2O3, ThO2, and ZrO2. It is the purpose of this paper to present data on the preparation and optical properties of these oxide films and to discuss some of their applications, such as the preparation of well protected front surface mirrors with high reflectance in the ultraviolet, multilayer antireflection coatings, surface films for controlling the temperature of satellites, coatings for solar energy converters, and for the study of erosion effects in outer space.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1963
- Accession Number
- AD0612134
Entities
People
- G. Hass
- J. T. Cox
- Jason Ramsey
Organizations
- United States Army Engineer Research and Development Laboratory