1 November 1991 Production of sapphire domes by the growth of near-net-shape single crystals
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Abstract
Large sapphire single crystals with the geometry of near net shape domes are grown by the gradient solidification method (GSM). The growth is carried out in double-wall molybdenum crucibles, and perfect crystals, free of grain boundaries and scattering centers, are produced. The process is used to grow sapphire domes with different crystallographic orientations, including the optical axis. This process significantly shortens the fabrication process of the dome, thus leading to a cheaper, high-quality, product.
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Shlomo Biderman, Shlomo Biderman, Atara Horowitz, Atara Horowitz, Yehezkel Einav, Yehezkel Einav, Gabi M. Ben-Amar, Gabi M. Ben-Amar, Dan Gazit, Dan Gazit, Adrian Stern, Adrian Stern, Mathania Weiss, Mathania Weiss, } "Production of sapphire domes by the growth of near-net-shape single crystals", Proc. SPIE 1535, Passive Materials for Optical Elements, (1 November 1991); doi: 10.1117/12.48300; https://doi.org/10.1117/12.48300
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