倍半氧化物激光陶瓷的研究进展  

Research Progress on Sesquioxide Laser Ceramics

作　　者：李晴 王俊[2] 马杰[2] 刘鹏[2] 沈德元[2] 章健[3] 于浩海[1] 张怀金[1] 唐定远 LI Qing;WANG Jun;MA Jie;LIU Peng;SHEN Deyuan;ZHANG Jian;YU Haohai;ZHANG Huaijin;TANG Dingyuan(State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China;Jiangsu Key Laboratory of Advanced Laser Materials and Devices,Jiangsu Normal University,Xuzhou 221116,Jiangsu,China;Shanghai Institute of Ceramics,Chinese Academy of Science,Shanghai 201899,China;Julong College,Shenzhen Technology University,Shenzhen 518118,Guangdong,China)

机构地区：[1]山东大学,晶体材料国家重点实验室,济南250100 [2]江苏师范大学,江苏省先进激光材料与器件重点实验室,江苏徐州221116 [3]中国科学院上海硅酸盐研究所,上海201899 [4]深圳技术大学聚龙学院,广东深圳518118

出　　处：《硅酸盐学报》2024年第3期1006-1022,共17页Journal of The Chinese Ceramic Society

基　　金：国家重点研发计划项目(2022YFB3605800);国家自然科学基金项目(62105130,62075089);广东省科研能力提升计划项目(2022ZDJS116)。

摘　　要：倍半氧化物透明陶瓷具有声子能量低、热膨胀系数低、损伤阈值高、热导率高等优势,在固体激光领域有着极大的应用前景。提出了研制高质量倍半氧化物透明陶瓷亟需解决的瓶颈问题,阐述了在倍半氧化物陶瓷制备过程中提高光学质量、减少晶格缺陷的关键措施,总结了稀土离子掺杂倍半氧化物陶瓷在1~3μm波段固体激光器应用中的代表性成果,并对倍半氧化物激光陶瓷的未来发展进行了展望。Solid-state lasers have the advantages of realizing laser outputs with a high energy and a high peak power,having potential applications in civil and military fields(i.e.,remote sensing,environmental monitoring,medical treatment and optoelectronic countermeasure).Rare-earth ions doped sesquioxide materials as one of the most promising gain media have attracted recent attention due to their low phonon energy,low thermal expansion coefficient and high thermal conductivity.However,large-size sesquioxide single crystals with a good optical quality are difficult to grow because of the high melting points(i.e.,>2400℃)and phase transition point at 2280℃.Fortunately,the sintering of sesquioxide ceramics as an alternative way to prepare laser host materials.It is possible to obtain the materials with a large volume and a high doping concentration,showing a superiority in large-scale production,a feasibility of shape control and better mechanical properties.To achieve high-efficiency and high-power laser oscillation from sesquioxide ceramics,it is crucial to eliminate the main scattering centers inside microstructures,i.e.,residual pores and secondary phases.Raw powders with less agglomeration and high sinterability,combined with appropriate molding methods are fundamental for producing compacts with small pore size and uniform microstructures.This is favorable to avoid differentiate densification,degrading the optical homogeneity and transparency.During the sintering process,it is essential for pores to remain at grain boundaries until the final full densification.This prevents the formation of intragranular pores that are hard to remove.The effective control of grain boundary migration can be achieved to prevent pore-boundary separation through the addition of suitable sintering additives,regulation of sintering atmospheres(i.e.,vacuum,hydrogen and oxygen),and the use of advanced sintering techniques(i.e.,microwave sintering,spark plasma sintering or two-step sintering,etc.).In addition,pressure assisted sintering,in

关 键 词：倍半氧化物 透明陶瓷 稀土离子 激光陶瓷 固体激光 

分 类 号：TQ174.75[化学工程—陶瓷工业]