Optical properties of YSAG : Yb : Er ceramics with Sc3+ cations in the dodecahedral and octahedral positions of the garnet crystal lattice

Modern Electronic Materials Pub Date : 2023-10-12 DOI:10.3897/j.moem.9.3.115403

V. Tarala, Alexander A. Kravtsov, S.V. Kuznetsov, F. Malyavin, O. Chapura, E. A. Brazhko, L. Kozhitov

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Abstract

Optical ceramics based on YSAG : Yb : Er with the compositions {Y1.86Yb0.45Er0.09Sc0.6}[Al1.6Sc0.4]Al3O12 and {Y2.26Yb0.45Er0.09Sc0.2}[Al1.0Sc1.0]Al3O12 were fabricated by vacuum sintering from pre-synthesized nanocrystalline powders. A comparative analysis of these samples with optical ceramics of the compositions {Y2.34Yb0.45Er0.09Sc0.12}[Al1.92Sc0.08]Al3O12 and {Y0.96Yb0.45Er0.09Sc1.50}[Al1.8Sc0.2]Al3O12 was carried out. The influence of scandium cations in the dodecahedral and octahedral positions of the garnet crystal lattice on the refractive index of YSAG : Yb : Er, as well as the values of absorption coefficients, integral luminescent intensities, and lifetimes of excited states of Yb3+ (2F7/2 and 2F5/2) and Er3+ (4I15/2, 4I13/2, 4F9/2, and 4S3/2) cations was revealed in the wavelength ranges 520–700 nm and 890–1690 nm. It has been shown that by changing the concentrations of scandium cations in the dodecahedral and octahedral positions of the crystal lattice of YSAG : Yb : Er solid solutions, it is possible to purposefully change the efficiency of energy transfer from ytterbium cations to erbium cations.

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石榴石晶格十二面体和八面体位置含有 Sc3+ 阳离子的 YSAG : Yb : Er 陶瓷的光学特性

利用预合成的纳米结晶粉末，通过真空烧结法制造了基于 YSAG : Yb : Er 的光学陶瓷，其成分为 {Y1.86Yb0.45Er0.09Sc0.6}[Al1.6Sc0.4]Al3O12 和 {Y2.26Yb0.45Er0.09Sc0.2}[Al1.0Sc1.0]Al3O12 。对这些样品与{Y2.34Yb0.45Er0.09Sc0.12}[Al1.92Sc0.08]Al3O12和{Y0.96Yb0.45Er0.09Sc1.50}[Al1.8Sc0.2]Al3O12组成的光学陶瓷进行了比较分析。在石榴石晶格的十二面体和八面体位置上的钪阳离子对 YSAG : Yb ：铒的折射率，以及 Yb3+（2F7/2 和 2F5/2）和 Er3+（4I15/2、4I13/2、4F9/2 和 4S3/2）阳离子在 520-700 纳米和 890-1690 纳米波长范围内的吸收系数、积分发光强度和激发态寿命。研究表明，通过改变 YSAG : Yb : Er 固溶体晶格十二面体和八面体位置上钪阳离子的浓度，可以有目的地改变从镱阳离子到铒阳离子的能量转移效率。

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来源期刊

Modern Electronic Materials

CiteScore

0.60

自引率

0.00%

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