提拉法生长的5at% Yb∶GdTaO_4晶体的结构和光谱性能分析  

Study on the Structure and Spectral Properties of 5at% Yb∶ GdTaO_4 Grown by Czochralski Method

作　　者：杨华军[1,2] 张庆礼 彭方[1,2] 王小飞[1,2] 高进云 罗建乔 孙敦陆 王迪 刘文鹏 殷绍唐 

机构地区：[1]中国科学院安徽光学精密机械研究所光子器件与材料研究室,合肥230031 [2]中国科学院大学,北京100049

出　　处：《人工晶体学报》2013年第5期788-793,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(90922003;50772112;91122021;50932005;51172236;51272254)

摘　　要：使用提拉法成功生长出了尺寸为25 mm×50 mm的5at%Yb∶GdTaO4晶体。通过X射线衍射确定了晶体的结构,并拟合得到了晶体的结构参数,分析了GdTaO4晶体容易产生解理和开裂的原因。测量了它的吸收光谱以及低温和常温的光致发光光谱,计算得到了5at%Yb∶GdTaO4晶体吸收截面和受激发射截面,并综合评估了晶体的激光性能。结果表明:5at%Yb∶GdTaO4晶体是非常有希望实现全固态超短脉冲的工作物质。GdTaO4 crystals doped with 5at% Yb3+ was grown by Cz method successfully.The structure was determined by X-ray diffraction and the structure parameters were obtained by further Retiveld refinement.The origin of cleavage and cracks was discussed.The absorption spectrum as well as low-temperature and room-temperature emission spectra was recorded.The absorption cross section and simulated emission cross section were calculated and the laser properties were also evaluated.The results predicted that it was a potential solid-state laser media for ultra-short-pulse laser applications.

关 键 词：Yb∶GdTaO4晶体 吸收截面 受激发射截面 超短脉冲 

分 类 号：O771[理学—晶体学]