Single-crystal – oriented-crystal – and epitaxy growth processes; – Processes of growth from liquid or supercritical state – Having growth from a solution comprising a solvent which is...
Patent
1998-12-01
2000-09-26
Kunemund, Robert
Single-crystal, oriented-crystal, and epitaxy growth processes;
Processes of growth from liquid or supercritical state
Having growth from a solution comprising a solvent which is...
117 77, 117 78, 117 81, 117 82, 117940, B30B 1102
Patent
active
061237647
ABSTRACT:
A manufacturing method for a single crystal of calcium fluoride includes the steps of degassing calcium fluoride powder particles to desorb impurities from surfaces of the calcium fluoride powder particles, preprocessing the degassed calcium fluoride powder particles by fusing the degassed calcium fluoride powder particles in a crucible to obtain a preprocessed product, and re-fusing the preprocessed product in a crucible to grow a single crystal of calcium fluoride.
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Mouchovski et al, "Growth of ulta-violet grade CaF crystals and their application for excimer laser optics", Journal of Crystal Growth, vol. 162, 79-82, 1996.
Kimura Kazuo
Mizugaki Tsutomu
Takano Shuuichi
Kunemund Robert
Nikon Corporation
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