Yb-doped materials can incorporate particularly high concentrations of Yb ion with weak concentration quenching, where high laser ion-doped materials with short absorption lengths permit the use of thin crystals with high absorption efficiencies. Herein, a new stoichiometric single crystal of YbBa₃(PO₄)₃ with dimensions of ϕ 15 × 30 mm³ was grown via the Czochralski pulling method. Rocking curve characterization showed that the as-obtained YbBa₃(PO₄)₃ crystal was of high quality, and the full-width at half-maximum measured from the (111) wafer was determined to be 28.8″. The crystal structure was characterized using single-crystal X-ray diffraction analysis. The results indicated that the crystal belongs to the cubic space group I4̅3d (No. 220) with cell parameters of a = b = c = 10.4352 (4) Å, V = 1136.32 (13) ų, and Z = 4. The thermal and spectroscopic properties were evaluated, including the coefficient of thermal expansion, specific heat, thermal conductivity, and absorption and fluorescence spectra. The absorption cross-section at 975 nm and fluorescence lifetime were calculated as 1.02 × 10^–20 cm² and 220 μs, respectively. The emission cross-section at 1008 nm was determined to be 4.07 × 10^–20 cm² at room temperature, where the full-width at half-maximum of the emission peak was 75 nm, indicating that the stoichiometric crystalline YbBa₃(PO₄)₃ is a promising laser crystal material.

中文翻译：

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YbBa ₃（PO ₄）₃单晶的生长，热学和光谱性质：一种新型化学计量激光材料

掺Yb的材料可以掺入特别高浓度的Yb离子，而弱淬灭，其中吸收长度短的高掺激光离子的材料允许使用吸收效率高的薄晶体。在此，通过切克劳斯基拉晶法生长了尺寸为ϕ 15×30 mm ³的新型化学计量的YbBa ₃（PO ₄）₃单晶。摇摆曲线表征表明所获得的YbBa ₃（PO ₄）₃晶体是高质量的，从（111）晶片测得的半峰全宽确定为28.8英寸。使用单晶X射线衍射分析来表征晶体结构。结果表明，该晶体属于立方空间群余43 d（220号），用细胞参数一个= b = c ^ = 10.4352（4），V = 1136.32（13）一种³，和ž＝ 4。评估了热和光谱性质，包括热膨胀系数，比热，热导率以及吸收和荧光光谱。975 nm处的吸收截面和荧光寿命分别计算为1.02×10 ^–20 cm ²和220μs。室温下在1008 nm处的发射截面确定为4.07×10 ^–20 cm ²，其中发射峰的半峰全宽为75 nm，表明化学计量的晶体YbBa ₃（PO ₄（_3）是有前途的激光晶体材料。