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中文摘要：
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980nm LD光激发，Ni^2＋：SLN单晶的近红外发光中心位于1087nm，荧光峰半高宽约为72nm。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。^3T2g（^3F）→A2g（^3F）能级跃迁。
英文摘要：
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.
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