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.

© 1968 Optical Society of America

Dispersion of Quartz in the Vacuum Ultraviolet from Interference in a Thin Parallel Plate

V. Chandrasekharan and H. Damany
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