Optimization of thermal environment during crystal growth of large-sized Nd:YAG by Temperature Gradient Technique by Li Hongjun, Xu Jun, Su Liangbi, Jiang Benxue, Zhao Guangjun, Zhou Guoqing, and Dong Yongjun

Crystal Research and Technology

Cryst. Res. Technol. 42, 107 (2007) - Abstract -

Optimization of thermal environment during crystal growth of large-sized Nd:YAG by Temperature Gradient Technique

Li Hongjun, Xu Jun, Su Liangbi, Jiang Benxue, Zhao Guangjun, Zhou Guoqing, and Dong Yongjun

Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800, P.R.China

Keywords	temperature gradient technique, crystal growth, Nd:YAG crystal, finite-element method
PACS	81.10.-h
DOI	10.1002/crat.200610781

A finite-element model is employed to analysis the thermal environments in Temperature Gradient Technique (TGT) furnace during the growth of large-sized Nd:YAG crystal. The obtained results show that when the crucible is located at the lower position inside of the heater, a flatter solid-liquid interface is established, which makes it easier to obtain the core-free Nd:YAG crystal. Meanwhile, the lower crucible position can induce higher axial temperature gradient, which is beneficial to the release of latent heat.

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