大尺寸、高质量BaAlBO_3F_2晶体的生长  

Large Scale and High Quality BABF Crystal Growth

作　　者：岳银超[1] 王佳诺[1] 胡章贵[1] 

机构地区：[1]中国科学院理化技术研究所

出　　处：《人工晶体学报》2008年第4期777-780,824,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(No.50472086,No.50590402)

摘　　要：本文讨论了影响BaAlBO3F2（BABF）晶体生长尺寸和质量的相关因素，诸如助熔剂的选择、生长原料的制备、籽晶的处理、温度梯度、晶体转速、降温速率等。采用新的B2O3-LiF—NaF助熔剂体系，[001]向籽晶，20—40r／min的转速，1～5℃／d的降温速率，通过中部籽晶法生长出了尺寸为40×30×12mm3、光学均匀性为△n≈4．048×10^-6／cm的BABF晶体。The study focused on optimization of growing conditions of new nonlinear optical crystal BABF. Flux selection, preparation process of starting materials and optimization of other growing parameters were discussed in the paper. The high-quality BABF crystal with sizes up to 40 × 30 × 12 mm3 had been successfully grown by the middle-seeded solution growth technique, and the optical homogeneity of the crystal is △n ≈ 4. 048 × 10^-6/cm. The growing conditions are as follows： B2O3-LiF-NaF system as fluxes, [ 001 ] seed orientation, rotation rate 20-40 r/min, cooling rate 1-5 ℃/d.

关 键 词：BABF晶体 中部籽晶法 生长条件 光学均匀性 

分 类 号：O78[理学—晶体学]