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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Spectroscopic investigation of Dy~(3+)-doped Li_2Gd_4(MoO_4)_7 crystal for potential application in solid-state yellow laser
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Spectroscopic investigation of Dy~(3+)-doped Li_2Gd_4(MoO_4)_7 crystal for potential application in solid-state yellow laser

机译：Dy〜（3+）掺杂的Li_2Gd_4（MoO_4）_7晶体的光谱研究在固态黄色激光中的潜在应用

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摘要

Dy~(3+):Li_2Gd_4(MoO_4)_7 crystal with dimensions of φ20 x 25mm~3 has been grown by the Czochralski method. The spectroscopic properties of Dy~(3+) :Li_2Gd_4(MoO_4 )_7 crystal have been investigated. Based on the analysis of polarized absorption spectra in the framework of the Judd-Ofelt theory, the main spectroscopic characteristics, including the phenomenological intensity parameters, spontaneous transition probabilities, fluorescence branching ratios and radiative lifetimes of Dy~(3+) in the crystal, have been determined. The emission cross-sections for the ~4F_(9/2) -> ~6H_(13/2) transition of special interest for laser application have been calculated using the Fuchtbauer-Ladenburg (F-L) equation. The fluorescence and radiative lifetimes of ~4F_(9/2) manifold are equal to 126.5 μs and 201.1 (as, respectively, which mean the quantum efficiency is 62.9%. The results propose the possibility of Dy~(3+):Li_2Gd_4(MoO_4)_7 crystal for solid-state yellow laser pumped by commercially available blue laser diodes.
机译：用切克劳斯基方法生长了直径为φ20×25mm〜3的Dy〜（3 +）：Li_2Gd_4（MoO_4）_7晶体。研究了Dy〜（3 +）：Li_2Gd_4（MoO_4）_7晶体的光谱性质。在Judd-Ofelt理论框架内对极化吸收光谱进行分析后，主要光谱特征包括晶体中的Dy〜（3+）的现象学强度参数，自发跃迁概率，荧光分支比和辐射寿命，已经确定。已经使用Fuchtbauer-Ladenburg（F-L）公式计算了激光应用中特别感兴趣的〜4F_（9/2）->〜6H_（13/2）跃迁的发射截面。 〜4F_（9/2）流形的荧光寿命和辐射寿命分别等于126.5μs和201.1（as，分别表示量子效率为62.9％。结果表明Dy〜（3 +）：Li_2Gd_4（ MoO_4）_7晶体，用于由市场上出售的蓝色激光二极管泵浦的固态黄色激光。

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