Sol-Gel Processing of Net Shape Silica Optics
The objective of this chapter is to summarize the advantages in sol-gel processing of net silica optics. The advantages discussed include: homogeneity, purity, coefficient of thennal expansion, optical transmission, as-cast shapes and surface features, and the unique properties of porous silica matrices used for doping applications and laser-enhanced densification.
The potential disadvantages of sol-gel processing are inherent to size scaleup. They can be overcome by well-defined processing steps including: control of gel texture through hydrolysis, condensation and aging reactions, control of drying, elimination of casting defects, and precise atmosphere control.
KeywordsFuse Quartz Silica Monolith Silicon Tetrachloride Binary Optic Silica Optic
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