AMERICAN OPTICAL CORP SOUTHBRIDGE MA CENTRAL RESEARCH LAB
The goal is to determine the feasibility of producing high optical quality laser glass in an all-ceramic melting system. Such a system should eliminate the presence of small platinum particles, found in the glasses melted in platinum crucibles, which serve as laser damage sites. The main problem at the present time is that of obtaining good optical quality glass in large volumes. In order to examine the optical quality problem more thoroughly, a study of the stirring process was initiated. A simulated melting system was set up in which the stirring action in cooled glycerin is studied as a function of stirrer design, viscosity of medium being stirred and stirring cycles. During this period work was performed in two general areas Namely, 1 studies with and improvements in the cooled glycerin system used for investigating stirring action in the melt, and 2 analysis of damage sites produced in glass made from the all-ceramic melting system in an attempt to determine their origin.
Semiannual technical rept. no. 2, for period ending 30 Dec 1968
See also Semiannual technical rept. no. 1, AD0681362. Sponsored in part by the DARPA.