Nb2O5对Nd3+掺杂锗酸盐玻璃光谱性能的影响

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (11): 3768-3776.

所属专题：玻璃

Nb₂O₅对Nd³⁺掺杂锗酸盐玻璃光谱性能的影响

蒋晓琦^1,2, 孙焰¹, 王亚飞¹, 王欣¹, 陈树彬¹, 胡丽丽¹, 师彦春³, 郭爱民³

1.中国科学院上海光学精密机械研究所,高功率激光单元技术实验室,上海 201800;
2.上海大学,材料科学与工程学院,上海 201900;
3.中信金属股份有限公司,北京 100004

收稿日期:2022-08-16 修订日期:2022-09-20 出版日期:2022-11-15 发布日期:2022-12-12
通信作者: 王欣,博士,高级工程师。E-mail:xinwang@siom.ac.cn
作者简介:蒋晓琦(1997—),男,硕士研究生。主要从事光学玻璃方面的研究。E-mail:jiangxiaoqi@siom.ac.cn
基金资助:
中信铌钢发展奖励基金(2021310034000559)

Effect of Nb₂O₅ on Spectral Properties of Nd³⁺ Doped Germanate Glass

JIANG Xiaoqi^1,2, SUN Yan¹, WANG Yafei¹, WANG Xin¹, CHEN Shubin¹, HU Lili¹, SHI Yanchun³, GUO Aimin³

1. Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800, China;
2. School of Materials Science and Engineering, Shanghai University, Shanghai 201900, China;
3. Citic Metal Co., Ltd., Beijing 100004, China

Received:2022-08-16 Revised:2022-09-20 Online:2022-11-15 Published:2022-12-12

摘要/Abstract

摘要： 蓝光激光器在彩色激光显示、高密度光储存、海洋资源探测、水下通信以及生物科技等领域具有广泛的应用前景。目前较为成熟的Yb³⁺掺杂光纤激光器倍频后仅能获得~490 nm蓝绿光,因此如何得到接近450 nm的纯蓝光激光器是目前急需解决的问题。Nd³⁺:⁴F_3/2→⁴I_9/2能级跃迁产生的0.9 μm光经倍频后可获得~450 nm光,并可应用于蓝光激光器,但该跃迁产生的光所占荧光分支比较低。本文系统研究了1%(质量分数)Nd₂O₃掺杂50GeO₂-(20-x)PbO-15BaO-15ZnO-xNb₂O₅(x%=0%,2.5%,5%,10%,15%,摩尔分数)玻璃的吸收光谱、荧光光谱和荧光寿命,计算了相应的Judd-Ofelt强度参数以及增益带宽。研究发现,Nb₂O₅的加入会使Nd³⁺在900 nm荧光峰的吸收截面、发射截面、有效线宽和荧光分支比增加。当Nb₂O₅浓度为10%(摩尔分数)时,Judd-Ofelt强度参数Ω₂=5.91×10^-20 cm²,光谱质量参数χ=1.01,荧光分支比为42.9%。综上所述,Nb₂O₅能提高Nd³⁺ 0.9 μm的荧光分支比,从而倍频获得纯蓝光(450 nm),有利于蓝光激光器的发展及应用。

关键词: Nd³⁺, Nb₂O₅浓度, 锗酸盐玻璃, 光谱特性, Judd-Ofelt强度参数, ~0.9 μm荧光

Abstract: Blue laser has a wide range of application prospects in the fields of color laser display, high-density optical storage, exploration of marine resource, underwater communication and biomedical sciences, etc. However, the relatively mature Yb³⁺ doped fiber laser can only obtain blue green (~490 nm) laser after frequency doubling. Therefore, it is an urgent issue to obtain a pure blue laser close to 450 nm. The 0.9 μm fluorescence generated by the ⁴F_3/2→⁴I_9/2 level transition of Nd³⁺ can obtain the pure blue laser output of ~450 nm after frequency doubling, which has excellent application potential in the field of blue laser. However, the fluorescence generated by this transition occupies a low fluorescence branching raito. In this paper, the absorption spectrum, fluorescence spectrum and fluorescence lifetime of 1% (mass fraction) Nd₂O₃ doped 50GeO₂-(20-x)PbO-15BaO-15ZnO-xNb₂O₅ (x%=0%, 2.5%, 5%, 10%, 15%,mole fraction) glass were systematically studied, and the corresponding Judd-Ofelt intensity parameters and gain bandwidth were calculated. It is found that the 900 nm absorption cross section, emission cross section, effective linewidth and fluorescence branching ratio of Nd³⁺ increase with the doping of Nb₂O₅. When the concentration of Nb₂O₅ is 10% (mole fraction), Judd-Ofelt intensity parameter Ω₂=5.91×10^-20 cm², the spectral quality parameter χ=1.01, and the fluorescence branching ratio is 42.9%. In summary, 0.9 μm fluorescence branching ratio of Nd³⁺ can be raised by Nb₂O₅, so as to obtain pure blue light (450 nm) by frequency doubling, which is beneficial to the development and application of blue laser.

Key words: Nd³⁺, Nb₂O₅ concentration, germanate glass, spectral property, Judd-Ofelt intensity parameter, ~0.9 μm fluorescence

中图分类号:

TQ171

蒋晓琦, 孙焰, 王亚飞, 王欣, 陈树彬, 胡丽丽, 师彦春, 郭爱民. Nb₂O₅对Nd³⁺掺杂锗酸盐玻璃光谱性能的影响[J]. 硅酸盐通报, 2022, 41(11): 3768-3776.

JIANG Xiaoqi, SUN Yan, WANG Yafei, WANG Xin, CHEN Shubin, HU Lili, SHI Yanchun, GUO Aimin. Effect of Nb₂O₅ on Spectral Properties of Nd³⁺ Doped Germanate Glass[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(11): 3768-3776.

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Nb₂O₅对Nd³⁺掺杂锗酸盐玻璃光谱性能的影响

Effect of Nb₂O₅ on Spectral Properties of Nd³⁺ Doped Germanate Glass

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