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Luminescent properties of Er3+-doped La2O3–Ga2O3 glass prepared by aerodynamic levitation technique
Journal of Luminescence ( IF 3.6 ) Pub Date : 2021-07-21 , DOI: 10.1016/j.jlumin.2021.118355
Shuqiang Huang 1 , Chunxu Wang 1 , Mingjie Zhang 1 , Yuanzhi Chen 2 , Hangyu Ge 3 , Lei Wan 1 , Zhaohui Li 4, 5
Affiliation  

Although silicon photonics has made great progress, there are still challenges to realization of modules or devices such as integrated light sources and amplifiers because of the indirect band gap nature of silicon. In this paper, we report a high concentration Er3+-doped La2O3–Ga2O3 glass for Er3+-doped waveguide amplifier (EDWA). The results show the xEr2O3–44La2O3-(56-x)Ga2O3 glasses prepared by the aerodynamic levitation (ADL) technique have high glass transition temperatures (Tg > 1000 K) and microhardness (HV ≥ 6.9 GPa), which means the glasses have high thermal stability and damage resistance. The Er3+ concentration in Er2O3–44La2O3-55Ga2O3 glass is as high as ~2.5 × 1020 cm−3, and the luminous intensity at NIR (~1550 nm) is ~10–100 times that of up-conversion and MIR. The small branching ratio β of the 4I11/2 → 4I13/2 transition (20.1 %), large radiative transition probabilities Arad for 4I13/2 → 4I15/2 transition (190.39 s−1), and low temperature sensitivity of luminescence make the glass an idea material for EDWA using in NIR band.



中文翻译:

空气动力悬浮技术制备的 Er3+ 掺杂 La2O3-Ga2O3 玻璃的发光特性

尽管硅光子学取得了很大进展,但由于硅的间接带隙性质,集成光源和放大器等模块或器件的实现仍然存在挑战。在本文中,我们报告了用于 Er 3+掺杂波导放大器 (EDWA)的高浓度 Er 3+掺杂 La 2 O 3 –Ga 2 O 3玻璃。结果表明x Er 2 O 3 –44La 2 O 3 -(56- x )Ga 2 O 3采用空气动力悬浮(ADL)技术制备的玻璃具有较高的玻璃化转变温度(T g  > 1000 K)和显微硬度(HV  ≥ 6.9 GPa),这意味着玻璃具有较高的热稳定性和抗损伤性。Er 2 O 3 –44La 2 O 3 -55Ga 2 O 3玻璃中的Er 3+浓度高达~2.5 × 10 20  cm -3,近红外(~1550 nm)下的发光强度为~10-100倍上变频和 MIR。4 I 11/2  →  4 I 13/2的小支化比β跃迁 (20.1 %)、较大的辐射跃迁概率 A rad4 I 13/2  →  4 I 15/2跃迁 (190.39 s -1 ),以及发光的低温度敏感性使该玻璃成为用于 NIR 波段的 EDWA 的理想材料.

更新日期:2021-07-28
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