高光学质量Yb:YAG透明陶瓷的制备及激光参数研究  

Fabrication and Laser Parameters of Yb:YAG Transparent Ceramics with High Optical Quality

作　　者：王晴晴[1,2] 石云 冯亚刚[1,3] 刘欣 陈昊鸿 谢腾飞[1] 李江[1,3] WANG Qing-Qing;SHI Yun;FENG Ya-Gang;LIU Xin;CHEN Hao-Hong;XIE Teng-Fei;LI Jiang(Key Laboratory of Transparent Opto-functional Inorganic Materials,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China;Engineering Technology Research Center for New Silicon-based Materials,Faculty of Science,Bengbu University,Bengbu 233030,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海硅酸盐研究所,透明光功能无机材料重点实验室,上海201899 [2]蚌埠学院理学院,硅基新材料工程技术研究中心,蚌埠233030 [3]中国科学院大学材料与光电研究中心,北京100049

出　　处：《无机材料学报》2020年第2期205-210,共6页Journal of Inorganic Materials

基　　金：安徽省教育厅国内访学项目(gxgnfx2018059);安徽省教育厅自然科学项目(KJ2018A0573);蚌埠学院自然科学项目(2018ZR06zd);国家自然科学基金(61575212);中国科学院前沿基础重点项目(QYZDB-SSW-JSC022)~~

摘　　要：以高纯Y2O3,α-Al2O3,Yb2O3粉体作为原料,采用固相反应和真空烧结法(1750℃,30 h)制备了高光学质量的Yb:YAG透明陶瓷。5.0at%Yb:YAG陶瓷中Yb3+的实测浓度为6.41×1020 cm–3,晶胞密度为4.65 g/cm3。本工作重点研究了Yb:YAG陶瓷的显微结构、光谱特性和激光性能参数。场发射扫描电镜(FESEM)结果表明,Yb:YAG陶瓷的结构均匀致密、晶界干净平直,平均晶粒尺寸为(19±3)μm。该陶瓷样品(厚度为4.0 mm)在400 nm处的直线透过率为82.5%,在1100 nm处的透过率为85.2%。泵浦波长940 nm处的泵浦饱和光强最小,激光波长1030 nm处的泵浦阈值功率最低,940 nm泵浦1030 nm激光的品质因子为1.02×10–22 cm·s。通过计算增益截面表明Yb:YAG陶瓷宽带可调谐,是理想的激光增益材料。Yb:YAG transparent ceramics with high optical quality were fabricated by solid-state reaction and vacuum sintering method(1750℃×30 h)using high-purity Y2O3,α-Al2O3 and Yb2O3 powders as raw materials.The measured concentration of Yb3+in 5.0at%Yb:YAG ceramics is 6.41×1020 cm–3,and the cell density is 4.65 g/cm3.The microstructures,spectral characteristics and laser performance parameters of Yb:YAG ceramics were studied in this work.FESEM results show that Yb:YAG ceramics have uniform and compact structure,clean and straight grain boundaries,and the average grain size is about(19±3)μm.The in-line transmittance of Yb:YAG ceramics with thickness of 4.0 mm reaches 82.5%at 400 nm and 85.2%at 1100 nm.The minimum pump saturation light intensity occurs at 940 nm,and the pump threshold power at 1030 nm is the lowest.The quality factor of 1030 nm laser pumped at 940 nm is 1.02×10–22 cm·s.By calculating the gain cross section,it is indicated that Yb:YAG ceramics can be tuned broadband,and are ideal laser gain media.

关 键 词：Yb:YAG陶瓷 反应烧结 光谱特性 激光性能参数 

分 类 号：TQ174[化学工程—陶瓷工业]