YbHoCaO(BO) (Yb:HoCOB, x = 0, 0.1, 0.2, 0.3) crystals were grown by the Bridgman method for the first time. The crystal structure, rocking curve, transmission spectra, absorption spectra, band structure and thermal properties of Yb:HoCOB were characterized in detail. The maximum half peak width (FMHW) of YbHoCOB and YbHoCOB is 26.7″ and 23.8″, respectively, and the effective segregation coefficient is greater than 0.9. In addition, the transmittance of Yb:HoCOB is 88 %. New absorption peaks are introduced by doping Yb at 850–1000 nm. The UV absorption cut-off edge of Yb:HoCOB is red-shifted with increasing Yb doping. The thermal diffusivity and thermal conductivity of Yb:HoCOB decrease with increasing temperature. The specific heat increases with the increasing temperature and finally approaches a constant value. The specific heat of Yb:HoCOB crystal are above 0.670 J/gK at room temperature. Yb:HoCOB with good crystallization quality, high transmittance and high specific heat has the application potential in laser frequency and QPCPA. This work provides a useful exploration for the study of nonlinear optical materials in solid state lasers.

中文翻译：

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YbxHo1-xCa4O(BO3)3 晶体的生长、光学和热性能

首次采用布里奇曼法生长了YbHoCaO(BO) (Yb:HoCOB, x = 0, 0.1, 0.2, 0.3)晶体。对Yb:HoCOB的晶体结构、摇摆曲线、透射光谱、吸收光谱、能带结构和热性能进行了详细表征。 YbHoCOB和YbHoCOB的最大半峰宽度（FMHW）分别为26.7英寸和23.8英寸，有效偏析系数大于0.9。另外，Yb:HoCOB的透过率为88％。通过在 850-1000 nm 处掺杂 Yb 引入新的吸收峰。随着 Yb 掺杂量的增加，Yb:HoCOB 的紫外吸收截止边发生红移。 Yb:HoCOB 的热扩散率和导热率随着温度的升高而降低。比热随着温度的升高而增加，最终接近恒定值。 Yb:HoCOB晶体的室温比热在0.670 J/gK以上。 Yb:HoCOB具有良好的结晶质量、高透过率和高比热，在激光频率和QPCPA方面具有应用潜力。该工作为固体激光器中非线性光学材料的研究提供了有益的探索。