【摘要】 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。更多还原

【Abstract】 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 X-ray diffraction.That the structure of them is identical: tetragonal scheelite-type I4-1/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 Nd³⁺ were calculated.更多还原