Growth and spectroscopic properties of the 2.9 μm Tm,Ho:LuYAG laser crystals

被引：11
|
作者：
Zhang, Huili [1 ,2 ]
Sun, Dunlu [1 ]
Luo, Jianqiao [1 ]
Fang, Zhongqing [1 ,2 ]
Zhao, Xuyao [1 ,2 ]
Cheng, Maojie [1 ]
Zhang, Qingli [1 ]
Yin, Shaotang [1 ]
机构：
[1] Chinese Acad Sci, Key Lab Photon Devices & Mat Anhui Prov, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China
[2] Univ Sci & Technol China, Hefei 230022, Peoples R China
来源：
OPTICAL MATERIALS | 2015年 / 47卷
基金：
中国国家自然科学基金;
关键词：
Tm; Ho:LuYAG crystal; Czochralski method; 2.911 mu m; Spectroscopic; Lifetime; ER3+; OSCILLATION; YSGG; YB3+;
D O I：
10.1016/j.optmat.2015.06.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Lu2.4Y0.6Al5O12 (LuYAG) crystals with three different doping concentrations of Tm3+ and Ho3+ were grown successfully by the Czochralski method. The crystals exhibit broad absorption band at 783 nm and the full width at half maximum (FWHM) are about 11 nm. Excited by 783 nm laser diode (LD), strong fluorescence peaks are observed near 2.9 mu m, suggesting that the Tie ions can act as the sensitizer for Ho3+ ions. The stimulated emission cross-sections at 2.911 mu m are calculated to be 5.49 x 10(-18) cm(2), 3.11 x 10(-18) cm(2), and 4.04 x 10(-18) cm(2), respectively. Compared with the Tm,Ho:LuAG, and Tm,Ho:YAG crystals, the Tm,Ho:LuYAG crystal with 3 at.% Tm3+ and 1 at.% Ho3+ has a relatively longer lifetime 0.138 ms for the upper level I-5(6) and a shorter lifetime 7.25 ms for the lower level I-5(7), which is advantageous to the population inversion. These results indicate that the Tm,Ho:LuYAG crystal with 3 at.% Tm3+ and 1 at.% Ho3+ is a new potential candidate for realizing the 2.911 mu m laser output. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：490 / 494
页数：5
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