探讨了掺杂酸性络合剂和连续过滤两种溶液处理方法分别对KDP晶体和DKDP晶体快速生长和光学质量的影响, 测定了不同部位晶体样品的光学质量, 包括透过率, 散射点分布情况和激光的损伤阈值。实验表明适量的络合剂能提高生长晶体的质量：晶体中杂质金属离子含量明显减少, 紫外波段的透过率得到增加, 晶体内部散射点密度明显降低。采用连续过滤条件生长DKDP单晶, 光学质量测试的结果显示：晶体散射点密度显著降低, 激光损伤阈值得到提高。

The treatment of growth solution is of great importance to KDP and DKDP crystals. Two kind of solution treating methods are studied in this paper: the organic addictive CS doping in KDP solution and the continuous filtration of the solutions during DKDP crystals growth. The optical transmission spectra for different sectors in crystals, scattering distribution at boundary zone between prismatic and pyramidal sectors and laser damage threshold of crystals are determined for comparison. The results show that moderate dopant concentration of CS would improve the optical quality of KDP crystals: less amount of impurities, higher transmission at ultraviolet band, reduction in evidence of inclusions or cracks inside. In crystal gown with continuous filtration which eliminates effectively the unsolvable particles in the solution, low dislocation density is found distinctly and laser damage performance is improved.