Spectroscopic properties and energy transfer mechanism in Dy3+/Tm3+ codoped fluoroa luminate glasses modified byTeO2
Spectroscopic properties and energy transfer mechanism in Dy3+/Tm3+ codoped fluoroa luminate glasses modified byTeO2
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DOI：
10.1016/j.ceramint.2015.08.031
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
F. Huang;Ying Tian;Danping Chen;Shiqing Xu;Junjie Zhang
中科院分区：
文献类型：
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作者：
F. Huang;Ying Tian;Danping Chen;Shiqing Xu;Junjie Zhang
研究了Dy~(3+)/Tm~(3+)共掺氟碲酸盐玻璃中2.9Kμm的发射特性和能量传递过程。测量的吸收光谱表明，共掺杂样品可以被800 nm的激发光有效泵浦。计算并讨论了贾德-奥菲尔和辐射参数。较高的自发辐射几率(S−1的39.6%)为获得激光作用提供了更好的几率。共掺Tm~(3+)后，观察到Dy3+：6H13/2μ_(15/2)跃迁有明显的2.9G→_m发射，最佳掺杂比为1：1。讨论了两种离子之间的能量传递过程，计算了相关的微观相互作用参数。这些结果表明，Dy3+/Tm3+共掺的氟碲酸盐玻璃是一种适合于发展约3.0Vμm的固体激光器的材料。
This paper investigates 2.9 μm emission properties and energy transfer processes in the Dy3+/Tm3+codoped fluorotellurite glass. The measured absorption spectra demonstrate that the codoped sample can be efficiently pumped by an 800 nm excitation. Judd–Ofelt and radiative parameters are calculated and discussed. Higher spontaneous emission probability (39.6 S−1) provides a better probability to obtain laser action. Obvious 2.9 μm emission of Dy3+:6H13/2→6H15/2transition is observed after codoping with Tm3+and the optimum ratio in this system is 1:1. Energy transfer processes between the two ions are discussed and the related microscopic interaction parameters are calculated. Hence, these results indicate that the Dy3+/Tm3+codoped fluorotellurite glass is a suitable material for developing solid state laser at approximately 3.0 μm.