中文摘要：

通过传统降温法生长了不同EDTA和KCl剂量掺杂的KDP晶体，并观察了晶体的光散射情况，测定了晶体柱区样品的透过率和晶体中Fe、Cr、Cl三种杂质元素的含量，结果表明：低浓度的EDTA（0.01mol%）和KCl（〈1.5mol%）掺杂可以提高晶体的透过率，但高浓度掺杂（0.01mol%EDTA，2.0mol%KCl）会导致晶体散射严重，透过率降低，KCl浓度达到2.5mol%后晶体生长受到抑制，晶体缺陷严重；晶体中铁Fe^3＋、Cr^3＋的总含量随着掺杂浓度的增加而减少，晶体中并没有发现Cl元素存在。

英文摘要：

KDP crystals with different concentration of EDTA and KCl doping were fabracated by traditional temperature reducing method from solutions. The light scatter of KDP crystals was observed,the transmittance of samples of the prismatic section and the content of impurities （Fe^3＋, Cr^3＋, Cl^-） in KDP crystals were measured.The results indicated that EDTA and KCl with low concentration（0.01 mol%EDTA, KCl〈1.5 mol%） in solution can improve the transmittance of crystals, while high concentration（0.01mol%EDTA, 2.0 mol%KCl）may aggravate the light scatter and reduce the transmittance of crystals. The KCl doping with the concentration of 2.5 mol% could restrain the crystal growth and induce the crystal defects. The total content of trivalent metal ions （Fe^3＋, Cr^3＋） decreased with increase of doping concentration, while chlorine element was not found in the KDP crystals.