Production of sapphire domes by the growth of near-net-shape single crystals

Shlomo Biderman; Atara Horowitz; Yehezkel Einav; Gabi M. Ben-Amar; Dan Gazit; Adrian Stern; Mathania Weiss

doi:10.1117/12.48300

1 November 1991 Production of sapphire domes by the growth of near-net-shape single crystals

Shlomo Biderman, Atara Horowitz, Yehezkel Einav, Gabi M. Ben-Amar, Dan Gazit, Adrian Stern, Mathania Weiss

Proceedings Volume 1535, Passive Materials for Optical Elements; (1991) https://doi.org/10.1117/12.48300
Event: San Diego, '91, 1991, San Diego, CA, United States

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.

Citation Download Citation

Shlomo Biderman, Atara Horowitz, Yehezkel Einav, Gabi M. Ben-Amar, Dan Gazit, Adrian Stern, and 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); https://doi.org/10.1117/12.48300

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