Nd3+∶YCa4O（BO3）3单晶的坩埚下降法生长与光谱性能（英文）  

Bridgman Growth and Spectral Properties of Nd3+∶YCa4O（BO3）3 Single Crystal

作　　者：陈亚萍 孙志刚 赵艳 廖凡 陈红兵[1] CHEN Ya-ping;SUN Zhi-gang;ZHAO Yan;LIAO Fan;CHEN Hong-bing(State Key Laboratory Base of Novel Functional Materials&Preparation Science,Key Laboratory of Photoelectric detection Materials&Devices of Zhejiang Province,Faculty of Materials Science&Chemical Engineering,Ningbo University,Ningbo 315211,China)

机构地区：[1]宁波大学材料科学与化学工程学院浙江省光电探测材料及器件重点实验室新型功能材料及其制备科学国家重点实验室培育基地

出　　处：《人工晶体学报》2019年第11期2008-2013,共6页Journal of Synthetic Crystals

基　　金：National Natural Science Foundation of China(21171102);K.C.Wang Magna Foundation of Ningbo University

摘　　要：Nd3+∶YCOB单晶是在激光调制技术上具有重要应用价值的自倍频光学材料。采用高温固相反应合成Nd3+∶YCOB多晶粉体,再通过垂直区熔处理制备出高纯度Nd3+∶YCOB晶粒料,采用坩埚下降法生长出1mol%、2mol%和5mol%Nd3+掺杂比例的系列Nd3+∶YCOB单晶。测试表征了所生长单晶试样的光谱性能,包括吸收光谱、荧光光谱和荧光衰减时间。在808 nm红外光源激发下,Nd3+∶YCOB单晶显示出中心波长1064 nm的强荧光发射,其荧光寿命为157~162μs,证实1064 nm强荧光发射随Nd3+掺杂浓度加大而明显增强。Nd 3+-doped YCOB single crystal is a valuable self-double-frequency optical material applied in laser modulation technique.Nd 3+∶YCOB polycrystalline powder was initially synthesized by solid-state reaction at elevated temperature.High purity Nd 3+∶YCOB crystal grain was prepared from the polycrystalline powder by zone melting process.A series of transparent Nd 3+∶YCOB single crystals,with 1mol%,2mol%and 5mol%nominal Nd 3+dopant concentration,had been grown by means of vertical Bridgman method with optimized conditions.The spectral properties of as-grown crystals were characterized by measuring the absorption spectra,fluorescence spectra and fluorescence lifetime.It shows that Nd 3+∶YCOB crystal wafers exhibit a strong fluorescence emission centered at 1064 nm wavelength with a fluorescence lifetime of 157-162μs upon photonic excitation with 808 nm infrared light.

关 键 词：Nd3+:YCOB 单晶生长 坩埚下降法 光谱性能 

分 类 号：O78[理学—晶体学]