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Almost-100-kg sapphire crystal grown in China

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Compiled by Photonics Spectra staff

Hefei Crystalbridge Optoelectronic Materials Co. Ltd. has produced a commercial-grade sapphire crystal of nearly 100 kg, the largest ever produced in China. Crystalbridge estimates that the crystal will yield 4000 mm of 2-in.-equivalent rods, or about 5700 high-quality 2-in. substrates. Crystalbridge used a Model K1 sapphire crystal grower from California-based Thermal Technology to grow the boule in 14 days, an increase in productivity of more than 25 percent compared with most other Chinese producers. “Achieving this milestone only one month from equipment move-in demonstrates...Read full article

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    Published: August 2011
    Glossary
    boule
    1. A group of optical fibers that are fused and then treated to produce a vacuum-tight optical fiber cone or plate. 2. An artificial crystal in its raw state, after generation but prior to cutting or polishing.
    sapphire
    Sapphire refers to a crystalline form of aluminum oxide (Al2O3) that is used in various optical and photonic applications due to its exceptional optical, mechanical, and thermal properties. Sapphire is transparent over a wide range of wavelengths, from ultraviolet (UV) to near-infrared (NIR), making it suitable for optical components and devices operating in these spectral regions. In photonics, sapphire is utilized in several ways: Optical windows and lenses: Sapphire is used to...
    Asia-PacificAsiaPhotonicsbouleChen JunChinaHefei Crystalbridge Optoelectronic Materials Co. Ltd.Laura S. MarshallLight SourcesModel K1sapphireThermal TechnologyLEDs

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