Optical Properties of Magnesium Fluoride Films

概要

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It was found that films deposited on fused quartz kept at a higher temperature showed remarkable scattering, whilst films deposited at the same time on optical glass kept at the same temperature showed no detectable scattering. This could be explained by the tightliness of film to substrate surface. The refractive indices of magnesium fluoride were obtained from the film-thickness and transmittance extremes, and the dispersion curve was obtained within the error of ±0.01. The change of film-thickness and transmittance vs. wavelength curve by aging was examined. The aging effect was scarcely detectable in nearly all the specimens. The causes of porous films being deposited which may sinter in age, as reported by some workers, were considered. In conclusion, the author wishes to express his hearty thanks to Dr. K. Shinohare for his kind encouragement and guidance.
社団法人日本物理学会の論文
1956-09-05