Super Large Size Sapphire Single Crystal Plate: an “Optical Shield” for Future Warfare

JOURNAL OF SYNTHETIC CRYSTALS ›› 2023, Vol. 52 ›› Issue (9): 1730-1732.

• Research Express • Previous Articles

Super Large Size Sapphire Single Crystal Plate: an “Optical Shield” for Future Warfare

WANG Xiaoliang¹, ZHAO Peng¹, ZHUANG Hongyan¹, DING Yanshuai¹, LI Qinglian², SUN Jun^3,4, HUANG Cunxin¹

1. Beijing Sinoma Sythentic Crystal Co., Ltd., Beijing 100018, China;
2. TEDA Institute of Applied Physics, Nankai University, Tianjin 300457, China;
3. School of Physics, Nankai University, Tianjin 300071, China;
4. Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Science, Urumqi 830011, China

Received:2023-09-01 Online:2023-09-15 Published:2023-09-19

Abstract

Abstract: Sapphire single crystal is the currently preferred material for transparent armor for its excellent mechanical properties and optical properties. Edge-defined film-fed growth (EFG) method can be used to grow crystal with shape and size close to the target requirements, and reduce the production cost greatly. In this paper, the equipment for growing super large sapphire crystal with EFG mothed was designed, the thermal field and conditions were optimized, and a sapphire single crystal plate with size of 480 mm×1 200 mm×12 mm was grown successfully. Its shape is regular, and no scattering is found under irradiation of 20 mW He-Ne laser after removing the surface bubble layer.

Key words: sapphire single crystal plate, edge-defined film-fed growth method, super large size, transparent armor

CLC Number:

O78
O734

WANG Xiaoliang, ZHAO Peng, ZHUANG Hongyan, DING Yanshuai, LI Qinglian, SUN Jun, HUANG Cunxin. Super Large Size Sapphire Single Crystal Plate: an “Optical Shield” for Future Warfare[J]. Journal of Synthetic Crystals, 2023, 52(9): 1730-1732.

References

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Super Large Size Sapphire Single Crystal Plate: an “Optical Shield” for Future Warfare

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