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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Ortmann; Lars
Address:
Jena, DE
No. of patents:
2
Patents:












Patent Number Title Of Patent Date Issued
7534412 Large-volume CaF.sub.2 single crystals with reduced scattering and improved laser stability, and May 19, 2009
Single crystals with low scattering, small refractive index differences and few small angle grain boundaries have a bi-directional scattering distribution function value (BSDF) of less than 1.5*10.sup.-6 or 5*10.sup.-7.
7393409 Method for making large-volume CaF.sub.2 single cystals with reduced scattering and improved las July 1, 2008
The method provides CaF.sub.2 single crystals with low scattering, small refractive index differences and few small angle grain boundaries, which can be tempered at elevated temperatures. In the method a CaF.sub.2 starting material is heat-treated for at least five hours at temperatures










 
 
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