高光学质量Yb:YAG透明陶瓷的制备及激光参数研究

doi:10.15541/jim20190077

无机材料学报 ›› 2020, Vol. 35 ›› Issue (2): 205-210.DOI: 10.15541/jim20190077

所属专题：功能陶瓷论文精选(二)；【虚拟专辑】透明陶瓷与光学晶体

高光学质量Yb:YAG透明陶瓷的制备及激光参数研究

王晴晴^1,²,石云¹,冯亚刚^1,³,刘欣^1,³,陈昊鸿¹,谢腾飞¹,李江^1,³()

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

收稿日期:2019-02-14 修回日期:2019-03-21 出版日期:2020-02-20 网络出版日期:2019-05-29
作者简介:王晴晴(1985-), 女, 博士, 讲师. E-mail: sunny3406@163.com
基金资助:
安徽省教育厅国内访学项目(gxgnfx2018059);蚌埠学院自然科学项目(2018ZR06zd);安徽省教育厅自然科学项目(KJ2018A0573);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)

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

WANG Qing-Qing^1,²,SHI Yun¹,FENG Ya-Gang^1,³,LIU Xin^1,³,CHEN Hao-Hong¹,XIE Teng-Fei¹,LI Jiang^1,³()

1. Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
2. Engineering Technology Research Center for New Silicon-based Materials, Faculty of Science, Bengbu University, Bengbu 233030, China
3. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2019-02-14 Revised:2019-03-21 Published:2020-02-20 Online:2019-05-29
Supported by:
Domestic Visiting Program of Anhui Education Department(gxgnfx2018059);Natural Science Project of Bengbu University(2018ZR06zd);Natural Science Project of Anhui Education Department(KJ2018A0573);National Natural Science Foundation of China(61575212);Key Research Project of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-JSC022)

摘要/Abstract

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Yb ³⁺的实测浓度为6.41×10 ²⁰ cm ^-3, 晶胞密度为4.65 g/cm ³。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。

关键词: Yb:YAG陶瓷, 反应烧结, 光谱特性, 激光性能参数

Abstract:

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-Al₂O₃and Yb₂O₃ powders as raw materials. The measured concentration of Yb ³⁺in 5.0at% Yb:YAG ceramics is 6.41×10 ²⁰ cm ^-3, and the cell density is 4.65 g/cm ³. 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.

Key words: Yb:YAG ceramics, reactive sintering, spectral properties, laser performance parameters

中图分类号:

TQ174

王晴晴,石云,冯亚刚,刘欣,陈昊鸿,谢腾飞,李江. 高光学质量Yb:YAG透明陶瓷的制备及激光参数研究[J]. 无机材料学报, 2020, 35(2): 205-210.

WANG Qing-Qing,SHI Yun,FENG Ya-Gang,LIU Xin,CHEN Hao-Hong,XIE Teng-Fei,LI Jiang. Fabrication and Laser Parameters of Yb:YAG Transparent Ceramics with High Optical Quality[J]. Journal of Inorganic Materials, 2020, 35(2): 205-210.

图/表 8

图1 商业氧化物粉体的FESEM照片

Fig. 1 FESEM microstructures of commercial oxide powders (a) α-Al2O3; (b) Y2O3; (c) Yb2O3

图2 Yb:YAG陶瓷热腐蚀表面的FESEM照片

Fig. 2 FESEM microstructure of the thermally etched surface of Yb:YAG ceramics

图3 Yb:YAG陶瓷的XRD图谱

Fig. 3 XRD pattern of Yb:YAG ceramics

图4 Yb:YAG陶瓷的直线透过率曲线

Fig. 4 In-line transmittance curve of Yb:YAG ceramics

图5 YAG晶体中Yb3+的能级结构

Fig. 5 Energy level structure of Yb3+ in YAG crystal

图6 Yb:YAG陶瓷吸收截面和发射截面

Fig. 6 Absorption and emission cross sections of Yb:YAG ceramics

表1 不同泵浦波长和激光波长处Yb:YAG透明陶瓷的激光性能参数

Table 1 Laser performance parameters of Yb:YAG transparent ceramics at different pump wavelengths and laser wavelengths

$\lambda_{p}\to \lambda_{ex}/nm$	$I_{sat}/(kW·cm^{-2})$	$F_{ext}(\lambda_{ex})/(J·cm^{-2})$	$\beta_{min}/\%$	$I_{min}/(kW·cm^{-2})$	$M/(\times 10^{-23},cm·s)$
915→968	58.7	56.7	52.4	30.8	0.86
940→968	25.5	56.7	52.4	13.4	1.92
915→1030	58.7	10.1	5.63	3.30	4.53
940→1030	25.5	10.1	5.63	1.44	10.2
968→1030	44.8	10.1	5.63	2.52	5.62
915→1048	58.7	58.7	2.59	1.52	0.78
940→1048	25.5	58.7	2.59	0.66	1.72
968→1048	44.8	58.7	2.59	1.16	0.95

图7 Yb:YAG陶瓷的增益截面

Fig. 7 Gain cross sections of Yb:YAG ceramics

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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

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