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以KH2PO4作为原材料,从含85%(摩尔分数)氘的氘化溶液中分别由传统降温法和“点籽晶”快速生长法生长了磷酸二氘钾[(K(DxH1-x)2PO4,DKDP]晶体。对加工后的样品进行了光散射和透过性能测试,研究了不同生长方法对DKDP晶体的生长习性和光学性能的影响。结果表明:对于纯度较高原料(杂质金属离子浓度≤10-6),“点籽晶”快速生长法能有效避免晶体生长过程中杂晶的出现,且生长速率为传统降温法的10倍,但所得晶体存在严重的光散射,透过性能明显下降,另外,快速生长所得晶体柱面区域较锥面区域光学性能明显下降。
KH2PO4 was used as raw material to prepare potassium dideuterium phosphate [(K (DxH1-x) 2 PO4) from deuterated solution containing 85% (deuterium) deuterium by conventional cooling method and " , DKDP] crystal.The light scattering and transmission properties of the processed samples were tested, and the effects of different growth methods on the growth habit and optical properties of DKDP crystals were studied.The results show that for the high purity raw materials (impurity metal ion concentration ≤10-6). The rapid seed growth method can effectively prevent the appearance of hybrid grains during the growth of the crystal, and the growth rate is 10 times higher than that of the conventional cooling method. However, the obtained crystal has serious light scattering, The performance is obviously decreased. In addition, the optical properties of the rapidly growing cylindrical region are significantly lower than those of the tapered region.