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Growth and optical properties of the Nd,Ce:YAG laser crystal
Journal of Luminescence ( IF 3.3 ) Pub Date : 2021-04-17 , DOI: 10.1016/j.jlumin.2021.118134
Yongwen Guo , Jinqiang Huang , Guanzhen Ke , Yuanyuan Ma , Jiliang Quan , Guobin Yi

A high-quality 2-inch-diameter Nd3+, Ce3+ co-doped Y3Al5O12 (YAG) crystal was successfully grown by the Czochralski (CZ) method. During crystal growth, a modified temperature field was applied to prevent defects in the crystal. The spectrum of the sample showed strong absorption peaks corresponding to Nd3+ and Ce3+ ions. The effect of Ce3+ codoping on the photoluminescence of Nd3+ was investigated in detail. Strong 1066 nm emission of Nd3+ 4F3/24I11/2 was observed upon the 5d excitation of Ce3+. The energy transfer from Ce3+ to Nd3+ consists of nonradiative and radiative components. Compared to Nd:YAG, the double-doped Nd,Ce:YAG crystal realizes better utilization of the pump energy and higher laser energy output. Moreover, the laser threshold value is also significantly reduced. These results imply that Ce3+ doped into the YAG crystal acts as a good sensitizing ion for Nd3+. Hence, this double-doped Nd,Ce:YAG crystal is expected to be of industrial significance for manufacturing high-energy, low-volume solid-state lasers.



中文翻译:

Nd,Ce:YAG激光晶体的生长和光学性质

通过切克劳斯基(CZ)方法成功地生长了高质量的2英寸直径Nd 3+,Ce 3+共掺杂的Y 3 Al 5 O 12(YAG)晶体。在晶体生长期间,施加修改后的温度场以防止晶体中的缺陷。样品的光谱显示出对应于Nd 3+和Ce 3+离子的强吸收峰。详细研究了Ce 3+共掺杂对Nd 3+光致发光的影响。Nd 3+ 4 F 3/24 I 11/2的1066 nm强发射在Ce 3+的5d激发下观察到。从Ce 3+到Nd 3+的能量转移包括非辐射和辐射成分。与Nd:YAG相比,双掺杂Nd,Ce:YAG晶体实现了对泵浦能量的更好利用和更高的激光能量输出。此外,激光阈值也显着降低。这些结果表明,掺入YAG晶体中的Ce 3+对Nd 3+具有良好的敏化离子作用。因此,这种双掺杂的Nd,Ce:YAG晶体有望对制造高能量,小体积的固态激光器具有工业意义。

更新日期:2021-04-20
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