| The effects of Er3+ ion concentration on 2.0-μm emission performance in Ho3+/Tm3+ co-doped Na5Y9F32 single crystal under 800-nm excitation |
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| 引用本文： | 丁本利,周雄,章践立,夏海平,宋宏伟,陈宝玖.The effects of Er3+ ion concentration on 2.0-μm emission performance in Ho3+/Tm3+ co-doped Na5Y9F32 single crystal under 800-nm excitation[J].中国物理 B,2021(1). |
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| 作者姓名： | 丁本利 周雄 章践立 夏海平 宋宏伟 陈宝玖 |
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| 作者单位： | Key Laboratory of Photo-electronic Materials;State Key Laboratory on Integrated Optoelectronics;Department of Physics |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant No.51772159);the Natural Science Foundation of Zhejiang Province;China(Grant No.LZ17E020001);the Natural Science Foundation of Ningbo City(Grant No.202003N4099);K C Wong Magna Fund in Ningbo University。 |
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| 摘 要： | Na5Y9F32 single crystals doped with ~0.8-mol% Ho3+,~1-mol% Tm3+,and various Er3+ ion concentrations were prepared by a modified Bridgman method.The effects of Er3+ion concentration on 2.0-μm emission excited by an800-nm laser diode were investigated with the help of their spectroscopic properties.The intensity of 2.0-μm emission reached to maximum when the Er3+ ion concentration was ~1 mol%.The energy transfer mechanisms between Er3+,Ho3+,and Tm3+ ions were identified from the change of the absorption spectra,the emission spectra,and the measured decay curves.The maximum 2.0-μm emission cross section of the Er3+/Ho3+/Tm3+tri-doped Na5Y9F32 single crystal reached 5.26 × 10-21 cm2.The gain cross section spectra were calculated according to the absorption and emission cross section spectra.The cross section for ~2.0-μm emission became a positive gain once the inversion level of population was reached 30%.The energy transfer efficiency was further increased by 11.81% through the incorporation of Er3+ ion into Ho3+/Tm3+ system estimated from the measured lifetimes of Ho3+/Tm3+-and Er3+/Ho3+/Tm3+-doped Na5Y9F32single crystals.The present results illustrated that the Er3+/Ho3+/Tm3+tri-doped Na5Y9F32 single crystals can be used as promising candidate for 2.0-μm laser.
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| 关 键 词： | 2.0-μm emission Er3+/Ho3+/Tm3+ energy transfer Na5Y9F32single crystal |
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