Nd:Gd_xY_(1-x)Ca_4O(BO_3)_3晶体的生长及其光谱性能研究  

Growth and Spectra Properties of Nd:Gd_xY(1-x)Ca_4O(BO_3)_3 Crystal

作　　者：周娟[1] 罗军[1] 钟真武[1] 华王祥[1] 范世 

机构地区：[1]中国科学院上海硅酸盐研究所,上海200050

出　　处：《无机材料学报》2001年第3期427-432,共6页Journal of Inorganic Materials

摘　　要：利用熔体提拉法生长了大尺寸，高质量的新型激光自信频晶体Ｎｄ：ＧｄｘＹ１－ｘＣａ４Ｏ（ＢＯ３）３简称Ｎｄ：ＧｄＹＣＯＢ）．对Ｎｄ：ＧｄＹＣＯＢ晶体的ＸＲＤ衍射图进行指标化，得到它的晶胞参数为α＝８．０８０Ａ； ｂ＝１６．０１６Ａ； ｃ＝３．５３８Ａ； β＝１０１．１８°；μ＝４９１．１Ａ３．对取自不同部位的晶体粉末进行ＩＣＰ原子发射光谱分析表明晶体整体组份均匀一致，根据熔体和晶体粉末的ＩＣＰ数据计算，Ｎｄ：ＧｄＹＣＯＢ晶体中Ｎｄ３＋的分凝系数为０．６３．首次报道了 Ｎｄ：ＧｄＹＣＯＢ晶体２００～３０００ｎｍ室温透过光谱和室温荧光光谱及荧光寿命．室温透过光谱表明Ｎｄ：ＧｄＹＣＯＢ晶体的紫外吸收边在～２２０ｎｍ，具有很宽的透光波段（～２２０～２７００ｎｍ）； Ｎｄ：ＧｄＹＣＯＢ晶体在８００ｎｍ附近存在很强的吸收，适合于ＬＤ泵浦．荧光光谱表明Ｎｄ：ＧｄＹＣＯＢ晶体是一种很有潜力的ＲＧＢ（ｒｅｄ；ｇｒｅｅｎ， ｂｌｕｅ）激光自信频晶体．掺杂 ４％、 ５％ Ｎｄ：ＧｄＹＣＯＢ晶体的荧光寿命分别为 １０５μｓ和１００μｓ．GdxY1-xCa4O(BO3)(3) (GdYCOB) crystal is a kind of valuable nonlinear optical crystal. It can realize THG noncritical phase-matching for Nd:YAG laser and keep stable mechanical and chemical properties. Nd3+, Gd3+ and Y3+ are all rare-earth ions, so we can receive Nd:GdxY1-xCa4O(BO3)(3) (Nd:GdYCOB) crystal by a few Nd3+ ions doping. Combined laser action of the Nd3+ ions and nonlinear optical properties of GdYCOB host crystal in the mixed crystal, a new kind of self-frequency doubling crystal Nd:GdYCOB was obtained. The synthesis and crystal growth of Nd:GdYCOB crystal were reported in this paper. The transparent spectrum, fluorescent spectrum, and fluorescence lifetime of Nd:GdYCOB crystal were first measured at room temperature.

关 键 词：Nd:GdxY1-xCa4O(BO3)3晶体 激光自倍频晶体 提拉法生长 光谱 

分 类 号：TN244[电子电信—物理电子学] O782[理学—晶体学]