Crystal growth, low-temperature spectroscopy and multi-watt laser operation of Yb:Ca3NbGa3Si2O14
Crystal growth, low-temperature spectroscopy and multi-watt laser operation of Yb:Ca3NbGa3Si2O14
复制标题
Yb:Ca3NbGa3Si2O14 的晶体生长、低温光谱和多瓦激光操作
DOI：
10.1016/j.jlumin.2018.01.004
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发表时间：
2018
影响因子：
3.6
通讯作者：
Aguilo
中科院分区：
文献类型：
--
作者：
Zhang Xuzhao;Loiko Pavel;Mateos Xavier;Maria Serres Josep;Ren Junyu;Guo Jiayi;Cheng Rui;Gao Cunyuan;Dong Qing;Jambunathan Venkatesan;Lucianetti Antonio;Mocek Tomas;Vilejshikova Elena;Griebner Uwe;Petrov Valentin;Wang Zhengping;Guo Shiyi;Xu Xinguang;Aguilo
报道了掺Yb ~（3+）的三元硅酸盐晶体Ca_3NbGa_3Si_2O_（14）（Yb：CNGS）的晶体生长、结构、室温和低温（6 K）吸收和发射光谱。Rietveld精化数据。测量了Yb ~（3+）离子在CNGS中π和σ极化下的吸收截面、受激发射截面和增益截面。最大受激发射截面在1014 nm处为σSE= 0.97 × 10− 20 cm − 2（σ偏振）。Yb ~（3+）多重态的Stark劈裂得到解决。用体布拉格光栅稳频二极管激光器在976 nm端面泵浦下，对3 at% Yb：CNGS样品进行了切和切，获得了微片激光运转。对于后一种切割，在1048-1060 nm处的最大输出功率达到7.61 W，斜率效率为59%。通过改变输出耦合，实现了在50 nm宽的光谱范围内的多瓦发射。
We report on the crystal growth, structure, room- and low-temperature (6 K) absorption and emission spectroscopy of a 3 at% Yb3+-doped trigonal ordered langasite-type silicate crystal, Ca3NbGa3Si2O14(Yb: CNGS). The Rietveld refinement data are presented. Absorption, stimulated-emission and gain cross-sections are determined for the Yb3+ion in CNGS for π and σ polarizations. The maximum stimulated emission cross-section amounts toσSE= 0.97 × 10−20cm−2at 1014 nm (σ-polarization). The Stark splitting of the Yb3+multiplets is resolved. Microchip laser operation is obtained with botha-cut andc-cut 3 at% Yb: CNGS samples under end-pumping at 976 nm by a Volume Bragg Grating-stabilized diode laser. For the latter cut, the maximum output power reaches 7.61 W at 1048–1060 nm with a slope efficiency of 59%. By varying the output coupling, multi-watt emission over a 50 nm-broad spectral range is achieved.