Accession Number:

ADA014362

Title:

Chemical Vapor Deposition of Multispectral Domes

Descriptive Note:

Final rept. 19 Mar 1973-19 Sep 1974

Corporate Author:

RAYTHEON CO WALTHAM MA RESEARCH DIV

Personal Author(s):

Report Date:

1975-04-01

Pagination or Media Count:

91.0

Abstract:

The program demonstrated the capability of fabricating chemical vapor deposited zinc sulfide windows and hemispherical domes. A zinc sulfide plate, 10 X 10 X 58 in., and a 9-inch hemispherical dome were fabricated and optically polished to specification. As a result of this work the optical and structural properties of zinc sulfide were significantly improved. For example, a 60 percent increase in strength was realized. It was also demonstrated that it is possible using the CVD process to deposit multiple domes per run. With further development a significant cost savings for this type of hardware should be realized. Significant progress was also made in the development of zinc sulfo-selenide solid solutions. Improvements were realized in the optical and structural properties of these deposits. At the conclusion of the program a clearer understanding of the cause of scatter in these materials and zinc sulfide had been attained that resulted in improved materials.

Subject Categories:

  • Infrared Detection and Detectors
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE