INFRARED COATING STUDIES.
Abstract
Families of curves were computed for the convenient determination of the refractive index of non-absorbing quarterwave films on substrates of known index. The refractive indices of films of ZnTe, ZnS and PbCl2 in their non-absorbing infrared regions were determined. Survey reststrahlen measurements were continued to include crystals of PbMoO4, CaWO4, topaz, SiC, GaP and GaAs. Calculations of enhanced reflectance MgO reststrahlen films were carried out. With this technique good rectangular shaped reflection band filters for the 14 to 24 micron region are feasible. Calculations of filters embodying MgO reststrahlen films were made. With them it appears feasible to produce good pass band filters for the 30 micron region, as well as low pass transmission filters cutting sharply at this wavelength.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 15, 1966
- Accession Number
- AD0635629
Entities
People
- A. F. Turner