Synthetic Quartz with High Ultraviolet Transmission
- 1 July 1968
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 7 (7), 1387-1390
- https://doi.org/10.1364/ao.7.001387
Abstract
Quartz has been synthesized under hydrothermal conditions at rates of 1.78 mm/day in the presence of LiNO2 in Ag lined and Ag plated systems, and it is shown that such quartz has optical transmission between 1500 Å and 3 μ equal, and in some cases superior to, natural quartz. The uv cutoff at about 1500 Å has been shown to be associated with Fe whose concentration may be reduced by procedures that reduce the concentration of charge compensating H+ in the lattice (growth in LiNO2) and by procedures which reduce the concentration of Fe in solutions (inert conditions). Transmission near 3 μ is affected by OH which can be reduced by LiNO2.Keywords
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