基于Nd∶LiLuF4微晶料的晶体生长及激光性能研究

人工晶体学报 ›› 2023, Vol. 52 ›› Issue (7): 1250-1257.

• 大尺寸激光晶体材料制备的关键技术与应用研究 • 上一篇下一篇

基于Nd∶LiLuF₄微晶料的晶体生长及激光性能研究

卢浩^1,2, 李丙轩¹, 孙宝平¹, 黄鑫¹, 郑熠¹, 吴少凡¹, 王帅华¹

1.中国科学院福建物质结构研究所,福州 350002;
2.中国科学院大学,北京 100049

收稿日期:2023-05-16 出版日期:2023-07-15 发布日期:2023-08-16
通信作者: 王帅华,博士,教授级高级工程师。E-mail:shwang@fjirsm.ac.cn
作者简介:卢浩(1996—),男,河南省人,博士研究生。E-mail:luhao@fjirsm.ac.cn
基金资助:
国家重点研发计划(2022YFB3605703,2021YFB3601500);国家自然科学基金(22075284);中国科学院青年创新促进会(2019304)

Crystal Growth and Laser Performance Research Based on Nd∶LiLuF₄ Microcrystalline Materials

LU Hao^1,2, LI Bingxuan¹, SUN Baoping¹, HUANG Xin¹, ZHENG Yi¹, WU Shaofan¹, WANG Shuaihua¹

1. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2023-05-16 Online:2023-07-15 Published:2023-08-16

摘要/Abstract

摘要： 本文采用简易水热法,制备了稀土Nd离子掺杂的LiLuF₄(LLF)微晶材料,对该微晶样品进行了物相分析、微观形貌分析和近红外波段光学性能的相关研究。LLF晶体属于四方晶系白钨矿结构,空间群为I41/a;采用水热法制备的LLF微晶料结晶性良好,颗粒尺寸在20 μm左右,优化后Nd∶LLF样品的氧含量为0.001 4%(质量分数)。在792 nm波长激发下,掺杂3%(摩尔分数)Nd离子的LLF微晶的最强荧光发射峰位于1 047 nm,属于近红外波段,其平均荧光寿命约为0.275 1 ms。进一步采用提拉法生长出Nd∶LLF晶体并评估了其激光性能。Nd∶LLF激光晶体在1 053 nm处的发射截面为8.13×10^-20 cm²。激光性能测试发现,在1.2 W功率激发下,Nd∶LLF晶体可实现0.123 W的1 053 nm近红外激光输出。

关键词: LiLuF₄, 稀土掺杂, 水热法, 激光, 近红外波段

Abstract: In this paper, rare earth ion Nd doped LiLuF₄ (LLF) microcrystals were prepared by hydrothermal method. The phase analysis, morphology analysis of the crystals were performed and near infrared optical properties were studied. LLF crystals belong to the scheelite structure of tetragonal system and the space group is I41/a. The LLF microcrystalline materials prepared by hydrothermal method have good crystallinity and the particle size is about 20 μm. The oxygen content of the optimized Nd∶LLF sample is 0.001 4% (mass fraction). Under excitation of 792 nm wavelength, the main fluorescence emission peak of 3% (mole fraction) Nd-doped LiLuF₄ microcrystal is located at 1 047 nm, which belongs to near infrared bands, and its fluorescence lifetime is about 0.275 1 ms. Furthermore, Nd∶LLF crystal was grown by the Czochralski method and its laser performance was evaluated. The emission cross section of Nd∶LLF crystal at 1 053 nm is 8.13×10^-20 cm². The laser performance test and analysis show that under the excitation power of 1.2 W, Nd∶LLF crystal obtains a near-infrared laser output of 0.123 W at 1 053 nm.

Key words: LiLuF₄, rare earth doping, hydrothermal method, laser, near infrared band

中图分类号:

O78
O734

卢浩, 李丙轩, 孙宝平, 黄鑫, 郑熠, 吴少凡, 王帅华. 基于Nd∶LiLuF₄微晶料的晶体生长及激光性能研究[J]. 人工晶体学报, 2023, 52(7): 1250-1257.

LU Hao, LI Bingxuan, SUN Baoping, HUANG Xin, ZHENG Yi, WU Shaofan, WANG Shuaihua. Crystal Growth and Laser Performance Research Based on Nd∶LiLuF₄ Microcrystalline Materials[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2023, 52(7): 1250-1257.

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基于Nd∶LiLuF₄微晶料的晶体生长及激光性能研究

Crystal Growth and Laser Performance Research Based on Nd∶LiLuF₄ Microcrystalline Materials

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