在 ~2.8 μm 波长下工作的 Er,Pr:LuYSGG 晶体的结构、光谱和 LD 端泵浦激光器性能

IF 2.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

CrystEngComm Pub Date : 2024-05-13 DOI:10.1039/D4CE00289J

Huili Zhang, Dunlu Sun, Jianqiao Luo, Cong Quan, Yang Qiao, Yuwei Chen, Kunpeng Dong, Zhentao Wang, Hongyuan Li and Maojie Cheng

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引用次数: 0

摘要

我们展示了用 Cz 法生长的 Er3+ 和 Pr3+ 共掺杂 LuYSGG 晶体的结构、光谱和激光性能。XRD 结果表明它属于立方体系，空间群为 Ia-3d。利用 Sellmeier 方程拟合得到了 320-3000 nm 范围内的折射率曲线。4I13/2 和 4I11/2 电平的寿命分别为 0.871 和 0.728 ms，由于掺入了失活剂 Pr3+，其比率从 3.4 明显降低到 1.2。在 CW 模式下，最大输出功率为 1059 mW，斜率效率为 17.58%，激光中心波长约为 2.8 μm。光束质量因子为 1.40/1.34。结果表明，Er,Pr:LuYSGG 晶体是产生高功率中红外激光的潜在候选晶体，可应用于辐照环境。

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Structure, spectroscopy and LD end-pumped laser performance of an Er,Pr:LuYSGG crystal operated at ∼2.8 μm

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Structure, spectroscopy and LD end-pumped laser performance of an Er,Pr:LuYSGG crystal operated at ∼2.8 μm

We demonstrate the structure, spectroscopy, and laser performance of an Er³⁺ and Pr³⁺ co-doped LuYSGG crystal grown by the Cz method. The XRD result shows that it belongs to the cubic system with the space group I_ad. A refractive index curve in the range of 320–3000 nm is obtained by fitting the Sellmeier equation. The lifetimes of the ⁴I_13/2 and ⁴I_11/2 levels are 0.871 and 0.728 ms, and the ratio is reduced obviously from 3.4 to 1.2 due to the doping of deactivator Pr³⁺. In CW mode, a maximum output power of 1059 mW is achieved with a slope efficiency of 17.58% and laser center wavelength of ∼2.8 μm. Beam quality factors of 1.40/1.34 are achieved. The results suggest that the Er,Pr:LuYSGG crystal is a potential candidate for generating a high-power mid-infrared laser and can be applied in irradiation environments.