Growth, thermal, and spectroscopic properties of Yb,Ho,Pr:LuYAG single crystal: A novel ∼2.9 μm laser material
Growth, thermal, and spectroscopic properties of Yb,Ho,Pr:LuYAG single crystal: A novel ∼2.9 μm laser material
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Yb,Ho,Pr:LuYAG 单晶的生长、热学和光谱特性：一种新型 2.9μm 激光材料
DOI：
10.1016/j.jlumin.2022.118872
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发表时间：
2022-03
影响因子：
3.6
通讯作者：
Yuwei Chen
中科院分区：
文献类型：
--
作者：
Huili Zhang;Dunlu Sun;Jianqiao Luo;Cong Quan;Lunzhen Hu;Zhiyuan Han;Kunpeng Dong;Maojie Cheng;Yuwei Chen
成功地生长了一种新的Yb，Ho，Pr:LuYAG激光晶体，并对其进行了详细的研究，该晶体属于Ia-3d空间群的立方体系。生长晶体的x射线摇摆曲线表明晶体质量高。用化学方法发现了位错缺陷。测定了材料的密度、热膨胀系数和导热系数。935 nm处的吸收系数约为15.18 cm−1,2.911 μm处的发射截面约为2.23 × 10−21 cm2。下能级5I7的寿命从7.58 ms下降到5.88 ms，而上能级5I6的寿命基本保持不变，说明共掺杂Pr3+具有有效的失活作用，有利于实现Ho3+的居位反转。结果表明，Yb,Ho， Pr:LuYAG晶体可以作为实现~ 940 nm高功率InGaAs激光二极管泵浦2.911 μm激光的新型有前途的增益介质。
A novel Yb,Ho,Pr:LuYAG laser crystal was successfully grown and investigated in detail, which belongs to the cubic system with a space group of Ia-3d. The X-ray rocking curve of the as-grown crystal implied high crystalline quality. The dislocation defects were revealed by the chemical method. Moreover, the density, thermal expansion coefficient and thermal conductivity were determined. The absorption coefficient at 935 nm and the emission cross-section at 2.911 μm were obtained to be about 15.18 cm− 1 and 2.23 × 10− 21 cm2, respectively. The lifetime of the lower laser level 5I7 was shown to decrease from 7.58 to 5.88 ms, while that of the upper laser level 5I6 basically remained unchanged, suggesting that the co-doped Pr3+ possessed an efficient deactivation effect and was beneficial in attaining population inversions of Ho3+. The corresponding findings illustrate that the Yb,Ho, Pr:LuYAG crystal can serve as a novel promising gain medium for realizing the 2.911 μm laser pumped by ~ 940 nm high-power InGaAs laser diode.
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