K2Nd2O(BO3)2 的晶体结构和光学特性

Jingcheng Feng, Jun Shen, Guochun Zhang
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引用次数: 0

摘要

通过高温溶液法首次生长出一种稀土氧硼酸盐晶体 K2Nd2O(BO3)2。它在单斜 P21/c(14 号)空间群中结晶,晶格参数为 a=11.318(6) Å,b=6.575(4) Å,c=10.689(6) Å,β=117.062(12)°,Z=4。评估了 K2Nd2O(BO3)2 的吸收光谱、发射光谱和荧光寿命,并根据 Judd-Ofelt 理论分析了光谱的基本参数。K2Nd2O(BO3)2 的活化离子浓度高(1.13×1022 个离子/cm3)、吸收系数大(87.63 cm-1)、荧光寿命长(91.2 μs)、发射截面大(2.03×10-20 cm2),这些都表明它有可能应用于微芯片激光器。
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Crystal Structure and Optical Characteristics of K2Nd2O(BO3)2
A rare earth oxyborate crystal K2Nd2O(BO3)2 has been grown by means of high temperature solution method for the first time. It crystallizes in monoclinic P21/c (No. 14) space group, and the lattice parameters are a=11.318(6) Å, b=6.575(4) Å, c=10.689(6) Å, β=117.062(12)°, and Z=4. The absorption spectrum, emission spectrum, and fluorescence lifetime of K2Nd2O(BO3)2 have been evaluated, and the foundational spectral parameters have been analysed according to the Judd-Ofelt theory. The high concentration of activated ions (1.13×1022 ions/cm3), large absorption coefficient (87.63 cm-1), long fluorescence lifetime (91.2 μs), and large emission cross section (2.03×10-20 cm2) of K2Nd2O(BO3)2 suggest its potential applications of microchip lasers.
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