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FIBER OPTICS WITH EXTENDED ULTRAVIOLET TRANSMISSION.
Triannual rept. no. 2 1 Nov 67-29 Feb 68,
IIT RESEARCH INST CHICAGO ILL
Pagination or Media Count:
The objective of this contract is to conduct a research and development program leading to the fabrication of fiber-optic faceplates for cathode ray tubes with high transmission in the near- and middle-ultraviolet spectral regions. The first years study is primarily to evaluate existing optical glasses phase I and develop improved ones suitable for meeting the specific performance requirements of the contract phase II. Screening studies on commercial optical glasses were continued and compositions were analyzed. New multicomponent glasses, having a wide range of compositions were formulated. Spectral transmission, refractive index and absorption coefficient properties were measured. High index glasses in the zinc-lanthanum borate, zinc-calcium-lanthanum borate, and barium-calcium-lanthanum borate systems exhibited high transmission in the spectral region of interest. Exploratory work to further improve the transmission of glasses in these systems is being continued. One of the low index glasses prepared from pure raw materials exhibited excellent uv transmission. A number of other glass compositions using less pure materials were suitable for preliminary evaluation of stability and refractive index. Author
APPROVED FOR PUBLIC RELEASE