Nd∶NaR(WO_4)_2晶体生长(R=Bi,Y)

The growth of Nd∶NaR(WO_4)_2 crystal by Czochralski method(R=Bi,Y)

采用提拉法生长出了掺钕钨酸铋钠[Nd∶NaBi(WO4)2,简称Nd∶NBW]和掺钕钨酸钇钠[Nd∶NaY(WO4)2,简称Nd∶NYW]晶体,并给出了制备无开裂优质Nd∶NBW和Nd∶NYW晶体的最佳生长工艺参数。从XRD分析得到Nd∶NBW和Nd∶NYW晶体的晶胞参数,并分析了晶体的拉曼光谱,认为二者结构基本相同,为四方晶系、白钨矿结构、I41/a空间群。由吸收光谱可以看出,Nd∶NBW在802nm有较强的吸收峰,Nd∶NYW在804nm、752nm、586nm附近有较强、较宽的吸收峰,二者均适合于LD泵浦;计算了晶体中Nd3+的吸收截面积。

Nd：NBW and Nd：NYW single crystal was grown by the Czochralski method. The optimum technical parameters for growing crack-free crystals were presented. The structure and the lattice parameters of crystal were analyzed by the Xray diffraction. That the structure of them is identical： tetragonal scheclite-type ]141/a space group was found. The absorption peaks of Nd：NBW crystals at 802nm are better, the Nd：NYW at 804nm,752nm,,586nm are better and wider. They are propitious to LD pump. The absorption cross sections of Nd^3＋ were calculated.