Cr^（3＋）：YAl_3（BO_3）_4晶体生长和光谱性质的研究

Growth and Spectral Properties of Cr￣(3+):YAI_3(BO_3)_4 Crystal

用顶部将晶旋转助进剂法生长了不同掺杂Ｃｒ３＋离子浓度的Ｃｒ３＋：ＹＡｌ３（ＢＯ３）４（Ｃｒ３＋：ＹＡＢ）晶体，测量了吸收和荧光光谱，测量了荧光寿命ｔ＝１３５μｓ，计算了Ｃｒ３＋离子在ＹＡＢ晶格场中的能级和晶场参数Ｄｑ／Ｂ＝２．３，△Ｅ＝７７８ｃｍ－１，说明Ｃｒ３＋：ＹＡＢ晶体为一种中阶场介质，Ｃｒ３＋：ＹＡＢ有望成为一种新的可调谐激光晶体。

The Cr3+:YAI3 (BO3)4(Cr3+:YAB) crystals doped with different Cr3+ ionsconcentration are grown by top seed rotation method in flux.The absorption spectrum and fluorescence spectrum were measured,and the luminescence lifetime of Cr3+ is 135μs. The crystal field levels were calculated according to static electronic field model. The crystal field coefficients can be calculated as Dq/B=2.3,△M=778 cm=1.It is promising that Cr3+:YAB crystal may be used as a kind of new tunable laser crystal.