Ni^(2+)掺杂近化学计量比铌酸锂晶体的近红外发光特性  

The Near-infrared Luminescence Property of Ni^(2+)-doped Near-stoichiometric LiNbO_3 Single Crystals

作　　者：钟月锋[1] 万云涛[1] 夏海平[1] 

机构地区：[1]宁波大学光电子功能材料重点实验室,宁波315211

出　　处：《材料研究学报》2011年第1期84-88,共5页Chinese Journal of Materials Research

基　　金：国家自然科学基金50972061;浙江省杰出青年科学基金R4100364;宁波市自然科学基金(2009A610007;2010A610185);宁波大学王宽诚幸福基金资助项目~~

摘　　要：研究了Ni^(2+)掺杂近化学计量比铌酸锂(Ni^(2+):SLN)晶体的近红外发光特性。用980 nm LD光激发,Ni^(2+):SLN单晶的近红外发光中心位于1087 nm,荧光峰半高宽约为72 nm。晶体荧光衰减特性的测定结果表明,其室温荧光寿命为～240μs。晶体的近红外的宽带发光,源于Ni^(2+)离子八面体格位的~3T_(2g)(~3F)→A_(2g)(~3F)能级跃迁。The near-infrared luminescence properties of Ni^2＋ doped the near-stoichiometric LiNbO3 （SLN） single crystals have been investigated. Under a laser diode excitation source at 980nm, a near-infrared luminescence in Ni^2＋：SLN single crystals centers at 1087 nrn with its FWHM about 72 nm was found. The fluorescence decay properties of crystal were measured, and the fluorescence lifetime of Ni^2＋：SLN single crystals was as long as 240 μs even at room temperature. The observed near-infrared fluorescence can be attributed to the ^3T2g（^3F）→^3 A2g（^3F） transition of Ni^2＋ in octahedral sites.

关 键 词：无机非金属材料 镍掺杂近化学计量比铌酸锂晶体 近红外发光 荧光峰半高宽 荧光寿命 

分 类 号：TB321[一般工业技术—材料科学与工程] O482[理学—固体物理]