Yb^3＋：Sr3Gd(BO3)3激光晶体的生长和光谱特性  

Growth and Spectral Properties of Yb^(3+):Sr_3Gd(BO_3)_3 Laser Crystal

作　　者：刘晓利[1] 李月宝[1] 杨书颖[1] 崔玉杰[1] 潘建国[1] 王国富[2] 

机构地区：[1]宁波大学材料科学与化学工程学院,宁波市新型功能材料及其制备科学-省部共建国家重点实验室培育基地,宁波315211 [2]中国科学院福建物质结构研究所,福州350002

出　　处：《人工晶体学报》2009年第3期561-565,569,共6页Journal of Synthetic Crystals

基　　金：浙江省自然科学基金(No.Y406277);宁波市自然科学基金(No.2005A620023)

摘　　要：采用提拉法(Czochralski)生长出了掺Yb3+的Sr3Gd(BO3)3晶体,晶体尺寸达到:φ25 mm×30 mm。测量了Yb3+∶Sr3Gd(BO3)3晶体的吸收谱、荧光谱以及荧光寿命。Yb3+∶Sr3Gd(BO3)3晶体在975 nm有一半峰宽为7 nm的强吸收峰,π谱的吸收跃迁截面σa=7.28×10-21cm2,在1040 nm的发射跃迁截面σe=1.43×10-21cm2。辐射寿命为1.46 ms,Yb3+浓度为13 at%时的荧光寿命f=2.14 ms,Yb3+浓度为0.5 at%时的荧光寿命f=1.21 ms。Yb^3＋：Sr3Gd（BO3）3 crystal was grown by Czochralski growth. The crystal of dimension up to φ25 mm × 30 mm was obtained. The absorption spectra, fluorescence spectra and fluorescence lifetime of Yb^3＋-doped Sr3Gd （BO3 ）3 crystal were measured at room temperature. The π-polarized absorption transition at 975 nm has a FWHM of 7 nm, which is suitable for diode pumping. The π- polarized absorption and emission cross sections are 7.28 × 10^-21 cm^2 at 975 nm and 1.43 ×10^-21 cm^2 at 1040 nm, respectively. The radiative lifetime is 1.46 ms, fluorescence lifetime is 2.14 ms （13 at% Yb） and 1.21 ms（0.5 at% Yb）.

关 键 词：Sr3Gd(BO3)3晶体 提拉法 光谱参数 激光晶体 

分 类 号：O782[理学—晶体学]