Coating Science and Technology
Semiannual technical rept.
PENNSYLVANIA STATE UNIV STATE COLLEGE MATERIALS RESEARCH LAB
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In order to better prepare coatings for infrared laser windows, a program has been initiated to thoroughly study the science and technology of the deposition of inorganic elements and compounds as thin films. Deposition techniques include sputtering, PVD, and CVD characterization techniques include ellipsometry, SEM, x-ray emission analysis, IR and Raman spectroscopy, ISS, AES, SIMS, and strain measurements. Extensive theoretical calculations by Loomis have shown that effective coatings with the requisite optical properties can be prepared using two-layer films of the appropriate materials and thicknesses. Germanium can be used as the first layer on KCl, ZnSe and CdTe window materials, the second layer can be chosen theoretically from a number of other materials. Since this laboratory has extensive experience in the controlled deposition of germanium films, efforts are being concentrated on using this material as the first layer film. Modified author abstract
- Lasers and Masers