熱交換法による大口径Ge単結晶の育成

概要

論文の詳細を見る
A large diameter single crystal of germanium has been required for infrared optics, lenses and optical windows. A large boule of single crystal in a 130 mm diameter is obtained by heat exchange method in place of the Czochralski method. The optical properties were evaluated by IR-interferometry. The deviations of refractive indices are estimated to be below 1O^<-4> order in whole aperture. By further considering the heat exchange mechanism of the crucible, even larger scale single crystals will be produced by this technology in the near future.
日本結晶成長学会の論文
1997-10-10