Nd^(3+):Li_3Ba_2Re_3(MoO_4)_8(Re=Y,Gd,La)晶体的生长、结构和光谱性能研究  

Crystal Growth,Structure and Spectral Properties of Nd^(3+):Li_3Ba_2Re_3(MoO_4)_8 (Re=Y,Gd,La) Crystals

作　　者：宋明君[1] 

机构地区：[1]潍坊学院,山东潍坊261061

出　　处：《潍坊学院学报》2011年第6期48-52,共5页Journal of Weifang University

基　　金：山东省青年基金项目(ZR2010EQ007)

摘　　要：采用顶部籽晶法生长了Nd3+:Li3Ba2Re3(MoO4)8(Re=Y,Gd,La)晶体。利用X射线单晶衍射仪证实了其结构,并得到了其晶胞参数。测量了这三种晶体的室温吸收谱和荧光光谱,并计算了吸收光谱和荧光光谱中的相关参数。吸收光谱表明,这三种晶体在805nm处均有较强的吸收,其吸收半峰宽分别为6nm、6nm、7nm,非常适合于LD泵浦。同时根据这三种晶体的荧光光谱计算了其在1.06μm处的发射截面,其峰值分别为:11.6×10-20cm2(Nd3+:Li3Ba2Y3(MoO4)8),8.7×10-20cm2(Nd3+:Li3Ba2Gd3(MoO4)8,6.2×10-20cm2(Nd3+:Li3Ba2La3(MoO4)8)。最后,本文将这三种晶体的相关光谱参数与其它一些掺Nd离子的激光晶体进行了对比。结果显示,Nd3+:Li3Ba2Re3(MoO4)8(Re=Y,Gd,La)晶体是一种有潜力的固体激光材料。Nd^3＋：Li3Ba2Re3（MoO4）8（Re=Y,Gd,La） crystals were grown from melt by the top seeded solution growth method and their structure were confirmed by X--ray analysis. The absorption and emission spectra of the crystals were measured and the spectral properties were investigated. All the crystals have a strong absorption bands at 805nm and the full width at half the maximum （FWHM）are 6,6 and 7nm, respectively. The emission cross sections of the crystals were calculated to be 11.6×10-20cm2 for the Nd^3＋：Li3Ba2Re3（MoO4）8, 7×10-20cm2 for the Nd^3＋：Li3Ba2Re3（MoO4）8 and 6. 2×10-20cm2 for the Nd^3＋：Li3Ba2Re3（MoO4）8 respectively. Finally, the laser properties of the crystals were evaluated and compared with those of other Nd--doped laser crystals,and the results show that Nd^3＋：Li3Ba2Re3（MoO4）8 （Re=Y,Gd,La）crystals may be regarded as a potential solid-state laser host material.

关 键 词：顶部籽晶法 吸收截面 荧光光谱 光谱性能 

分 类 号：O627[理学—有机化学]