Growth, structure, and spectroscopic properties of Yb,Ho,Pr:GYTO single crystal (Invited)
Growth, structure, and spectroscopic properties of Yb,Ho,Pr:GYTO single crystal (Invited)
复制标题
Yb,Ho,Pr:GYTO单晶的生长、结构及光谱性质（特邀）
DOI：
10.3788/irla20201067
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Luo Jianqiao
中科院分区：
文献类型：
--
作者：
He Yi;Dou Renqin;Zhang Haotian;Liu Wenpeng;Zhang Qingli;Chen Yingying;Gao Yuxi;Luo Jianqiao
首次采用提拉法生长了新型中红外激光材料Yb，Ho，Pr：GYTO晶体。通过X射线Rietveld精修方法获得结构参数。测量了Yb，Ho，Pr：GYTO晶体（100）、（010）和（001）衍射面的X射线摇摆曲线。这些衍射峰的半峰全宽分别为0.036°、0.013°和0.077°，这表明所生长晶体的高结晶质量。用激光烧蚀电感耦合等离子体质谱法（LC-ICP-MS）测量了Yb，Ho，Pr：GdYTaO_4晶体中Yb~（3+），Ho~（3+），Pr~（3+）和Y~（3+）离子的浓度。Yb，Ho，Pr：GYTO晶体中Yb~（3+）、Ho~（3+）、Pr~（3+）和Y~（3+）的有效分凝系数分别为0.624、1.220、1.350和0.977。测量了Yb，Ho，Pr：GdYTaO_4的室温极化吸收光谱，并对相应的吸收跃迁进行了归属。940 nm LD激发的2.9 μm荧光光谱显示，最强发射位于2908 nm处。此外，还对GYTO中的Yb-Ho-Pr能量转移机制进行了论证。Yb，Ho，Pr：GYTO晶体的5I 7能级寿命比Ho：GYTO晶体降低了87.13%，接近上能级5I 6的寿命，表明Yb，Ho，Pr：GYTO晶体更容易实现粒子数反转和激光输出。
A new mid infrared laser material Yb,Ho,Pr:GYTO crystal was grown successfully using Czochralski method for the first time. The structural parameters were obtained by the X-ray Rietveld refinement method. The X-ray rocking curves of the(100),(010), and(001)diffraction face of Yb,Ho,Pr:GYTO crystal were measured. The full widths at half maximum of those diffraction peaks are 0.036°, 0.013°, and 0.077°, respectively, which indicates a high crystalline quality of the as-grown crystal. Laser Ablation Inductively-Coupled Plasma Mass Spectrometry was used to measure the concentrations of Yb~(3+), Ho~(3+), Pr~(3+), and Y~(3+)ions in the Yb,Ho,Pr:GdYTaO_4 crystal. The effective segregation coefficients of Yb~(3+), Ho~(3+), Pr~(3+), and Y~(3+)in Yb,Ho,Pr:GYTO crystal are 0.624, 1.220, 1.350, and 0.977, respectively. The room-temperature polarhosized absorption spectra of Yb,Ho, Pr:GdYTaO_4 was measured and the corresponding absorption transitions were assigned. The 2.9 μm fluorescence spectrum excited by 940 nm LD presents that the strongest emission is located at 2 908 nm. In addition, the Yb-Ho-Pr energy transfer mechanism in GYTO was also demonstrated. Compared with Ho:GYTO crystal, the lifetime of 5I7 level of Yb,Ho,Pr:GYTO crystal is reduced by 87.13%, which is close to that of the upper level 5I6, indicating that Yb,Ho,Pr:GYTO crystal is easier to realize population inversion and laser output.