高熔点稀土氧化物激光晶体的研究进展

摘要/Abstract

摘要： 高熔点稀土氧化物因具备高热导率、高机械强度、低声子能量及较大的阳离子位点密度等优势,表现出大分凝系数、强电声子耦合及多晶格位点等特性,已成为高功率、超快及红外波段激光晶体研究的热点。然而,高熔点稀土氧化物熔点较高,特别是稀土倍半氧化物(约2 450 ℃),晶体的生长十分困难。因此,尽管首次报道高熔点稀土氧化物晶体已过去数十年,但其发展至今仍处于初步阶段。近年来,随着对多种晶体生长技术的不断探索与优化,高熔点稀土氧化物的生长技术取得了突破,稀土离子掺杂的激光研究也愈加多样化。本文在总结高熔点稀土氧化物性能优势及晶体生长进展的基础上,重点介绍了在红外1、2、3 μm波段的高熔点稀土氧化物激光性能研究进展。

关键词: 激光晶体, 稀土氧化物, 倍半氧化物, 高熔点, 超快激光, 晶体生长

Abstract: High-melting-point rare earth oxides, due to their advantages of high thermal conductivity, high mechanical strength, low phonon energy, and high cation site density, exhibit characteristics such as large segregation coefficients, strong electron-phonon coupling, and multiple lattice sites. These properties have made them a hot topic of research in high-power, ultrafast, and infrared laser crystals. However, their high-melting-points, particularly for sesquioxides (~2 450 ℃), pose significant challenges for crystal growth. Though being reported decades ago, the development of sesquioxide crystals remains in its early stage. In recent years, breakthroughs in various crystal growth techniques have been achieved, leading to a diversification of rare earth ion-doped laser research. This paper reviews the advantages of high-melting-point rare earth oxides, recent advancements in crystal growth, and the progress in laser performance across the infrared 1, 2 and 3 μm wavelength bands.

Key words: laser crystal, rare earth oxide, sesquioxide, high-melting-point, ultrafast laser, crystal growth

中图分类号:

O734

任永春, 李健达, 曹笑, 黄燚, 张帆, 张宁, 薛艳艳, 王庆国, 唐慧丽, 徐晓东, 董永军, 徐军. 高熔点稀土氧化物激光晶体的研究进展[J]. 人工晶体学报, 2024, 53(11): 1829-1839.

REN Yongchun, LI Jianda, CAO Xiao, HUANG Yi, ZHANG Fan, ZHANG Ning, XUE Yanyan, WANG Qingguo, TANG Huili, XU Xiaodong, DONG Yongjun, XU Jun. Research Progress on High-Melting-Point Rare Earth Oxides Laser Crystals[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(11): 1829-1839.

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