A Yb³⁺:KBaY(MoO₄)₃ (Yb³⁺:KBYM) crystal with dimensions of 51 mm × 27 mm × 10 mm was successfully grown by the TSSG method. The characteristics of the crystal structure and probability of good optical properties were analyzed. The absorption and emission spectra of Yb³⁺:KBYM crystal exhibit broadened bands, with the maximum absorption cross-sections of 1.17 × 10^-20, 1.44 ×10^-20 and 1.37 × 10⁻²⁰ cm² at 976 nm for X-, Y- and Z-polarizations, respectively. The corresponding absorption FWHMs are as wide as 77, 46 and 55 nm. The well-known re-absorption effect of Yb³⁺ in the crystal is discussed. Two methods, the Füchtbauer-Ladenburg method (FL) and reciprocity method (RM) were adopted to compute the emission cross-sections and results show a certain discrepancy but the errors are allowable. The laser potentiality of the Yb³⁺:KBYM crystal was also evaluated by calculations of minimum inversion fraction ${\beta }_{\min }$, saturation pump intensity $I_{\text{sat}}$, the minimum pump intensity $I_{\min }$ and gain cross-sections spectra. Laser experiment was carried out and Watt-level continuous wave laser has been realized. Results indicate that the Yb³⁺:KBYM crystal with a disordered structure may be a potential laser media that can be used to generate tunable and ultrashort pulse laser emissions with high quality beam.

通过TSSG方法成功生长了尺寸为51mm×27mm×10mm的Yb ³⁺ :KBaY(MoO ₄ ) ₃ (Yb ³⁺ :KBYM)晶体。分析了晶体结构的特点和良好光学性能的概率。Yb ³⁺ :KBYM 晶体的吸收和发射光谱显示出加宽的谱带，X - 在 976 nm 处的最大吸收截面分别为 1.17 × 10 ^-20、1.44 ×10 ^-20和 1.37 × 10 ^-20  cm ²，Y - 和Z- 极化，分别。相应的吸收 FWHM 宽至 77、46 和 55 nm。讨论了众所周知的 Yb ³⁺在晶体中的重吸收效应。采用Füchtbauer-Ladenburg法（FL）和互易法（RM）两种方法计算发射截面，结果存在一定差异，但误差在允许范围内。Yb ³⁺ :KBYM 晶体的激光潜力也通过计算最小反转分数来评估${\beta }_{\mathrm{分钟}}$, 饱和泵强度 ${\mathrm{一世}}_{\text{坐}}$, 最小泵浦强度 ${\mathrm{一世}}_{\mathrm{分钟}}$并获得横截面光谱。进行了激光实验，实现了瓦级连续波激光。结果表明，具有无序结构的 Yb ³⁺ :KBYM 晶体可能是一种潜在的激光介质，可用于产生具有高质量光束的可调超短脉冲激光发射。