20-inch diameter CHES® sapphire boules

Chandra P. Khattak; Joshua Filgate; Raj Shetty; C. Richard Schwerdtfeger; Saurabh Ullal

doi:10.1117/12.2180647

22 May 2015 20-inch diameter CHES® sapphire boules

Chandra P. Khattak, Joshua Filgate, Raj Shetty, C. Richard Schwerdtfeger, Saurabh Ullal

Proceedings Volume 9453, Window and Dome Technologies and Materials XIV; 945305 (2015) https://doi.org/10.1117/12.2180647
Event: SPIE Defense + Security, 2015, Baltimore, MD, United States

Abstract

An automated controlled heat extraction system (CHES)® has been developed to produce 300 kg, 500 mm diameter sapphire boules. The versatile process allows production of boules in a-, r- or c- orientations. The technological advancements come with major cost reductions making sapphire for consumer electronics, LEDs and large optical windows a reality. In addition, these features allow large scale production with a fast ramp rate.

Citation Download Citation

Chandra P. Khattak, Joshua Filgate, Raj Shetty, C. Richard Schwerdtfeger, and Saurabh Ullal "20-inch diameter CHES® sapphire boules", Proc. SPIE 9453, Window and Dome Technologies and Materials XIV, 945305 (22 May 2015); https://doi.org/10.1117/12.2180647

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