Nd,Y:CaF2 laser crystals: novel spectral properties and laser performance from a controlled local structure
Nd,Y:CaF2 laser crystals: novel spectral properties and laser performance from a controlled local structure
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DOI：
10.1039/c5ce01362c
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发表时间：
2015-09
期刊：
影响因子：
3.1
通讯作者：
D. Jiang;Y. Zhan;Qian Zhang;F. Ma;L. Su;F. Tang;X. Qian;J. Xu
中科院分区：
文献类型：
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作者：
D. Jiang;Y. Zhan;Qian Zhang;F. Ma;L. Su;F. Tang;X. Qian;J. Xu
利用吸收光谱、激发光谱、荧光光谱和扩展X射线吸收精细结构（EXAFS）技术，系统地研究了一系列采用TGT法生长的Nd，Y：CaF2单晶。Y3+的掺入基本上操纵了CaF2晶格中Nd离子的局部结构。随后，Nd3+离子的局部结构的变化引起的光致发光参数，包括半高宽，截面，寿命和量子效率的实质性变化。用0.5%Nd，10%Y：CaF_2，0.8%Nd，5%Y：CaF_2，0.8%Nd，10%Y：CaF_2晶体在LD泵浦下进行了初步的激光实验，获得了斜率效率分别为30.1%，19.3%和24.9%的连续激光输出。
A series of Nd,Y:CaF2 single crystals grown using the TGT method were studied systematically by absorption, excitation and luminescence spectroscopy, and the extended X-ray absorption fine structure (EXAFS) technique. The incorporation of Y3+ substantially manipulated the local structure of Nd ions in the CaF2 crystal lattice. Subsequently, the changes in the local structure of the Nd3+ ions induced substantial variations of the photoluminescence parameters, including FWHM, cross sections, lifetimes and quantum efficiency. Preliminary laser experiments were carried out with 0.5% Nd,10% Y:CaF2, 0.8% Nd,5% Y:CaF2 and 0.8% Nd,10% Y:CaF2 crystals under LD pumping; true CW laser operation was achieved with slope efficiencies of 30.1%, 19.3% and 24.9%, respectively.