&lt;title&gt;80-mm EFG sapphire dome blanks yield high-quality low-cost single-crystal domes&lt;/title&gt;

Locher, John W.; Bates, Herb E.; Severn, W. C.; Pazol, B. G.; DeFranzo, Anthony C.

doi:10.1117/12.130785

Cited by 7 publications

(4 citation statements)

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“…An important near-net-shape process for sapphire is edge-defined, film-fed growth, called the EFG method [37][38][39][40][41]. In this technique, a seed crystal is dipped into the top of a capillary tube containing molten aluminum oxide.…”

Section: Single-crystal Sapphire Growth Methodsmentioning

confidence: 99%

Single-Crystal Sapphire Optical Fiber Sensor Instrumentation

Wang¹,

Pickrell²,

May³

2002

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Accurate measurement of temperature is essential for the safe and efficient operation and control of a wide range of industrial processes. Appropriate techniques and instrumentation are needed depending on the temperature measurement requirements in different industrial processes and working environments. Harsh environments are common in many industrial applications. These harsh environments may involve extreme physical conditions, such as high-temperature, high-pressure, corrosive agents, toxicity, strong electromagnetic interference, and high-energy radiation exposure. Due to these

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Section: Single-crystal Sapphire Growth Methodsmentioning

confidence: 99%

Single-Crystal Sapphire Optical Fiber Sensor Instrumentation

Wang¹,

Pickrell²,

May³

2002

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“…However, the crystal quality was not as high as desired and the manufacturing process was never optimized. 15,16 Another Navy Small Business Innovative Research contract was conducted at Crystal Systems. Work done in the mid to late 1980s used the apparatus shown at the left in Figure 9 to grow the near-net-shape domes at the right.…”

Section: Sapphire Domesmentioning

confidence: 99%

“…As-grown EFG sapphire produced by Saphikon. 15,16 Domes were formerly produced from sapphire boules by machining each dome out of a cylindrical piece of material, as shown at the left in Figure 10. This process wastes valuable material and requires a great deal of machining.…”

Section: Figurementioning

confidence: 99%

A peek into the history of sapphire crystal growth

Harris

2003

Window and Dome Technologies VIII

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“…In 1989, researches of Crystal Systems Inc. successfully grew a crack-free sapphire dome-shaped blank around molybdenum preforms using HEM [1]. In 1992, Locher et al [2] (Saphikon Inc.) reported on 80 mm sapphire dome blanks grown by the modified EFG technique. This was done on a latitudinal and longitudinal arc.…”

Section: Introductionmentioning

confidence: 99%