EDTA和KCl掺杂对KDP晶体光学质量的影响  

Effect of EDTA and KCl Doping on the Optical Quality of KDP Crystal

作　　者：王庆国[1] 滕冰[1] 于涛[2] 钟德高[1] 王东娟[1] 赵严帅[1] 

机构地区：[1]青岛大学物理科学学院,青岛266071 [2]福州大学物理系,福州350108

出　　处：《人工晶体学报》2009年第2期313-316,共4页Journal of Synthetic Crystals

基　　金：国家自然科学基金项目(No.10774081,No.10304009);国家光电子晶体材料工程技术研究中心开放基金(No.2007K08)

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Fe3+、Cr3+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。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.

关 键 词：KDP晶体 掺杂 透过率 光散射 

分 类 号：O782[理学—晶体学]