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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >The near- and mid-infrared emission properties of Tm~(3+)-doped GeGaS-CsI chalcogenide glasses
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The near- and mid-infrared emission properties of Tm~(3+)-doped GeGaS-CsI chalcogenide glasses

机译：Tm〜（3+）掺杂GeGaS-CsI硫族化物玻璃的近红外和中红外发射特性

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摘要

Serials of chalcogenide glasses based on composition of 72GeS _2-18Ga_2S_3-10CsI (in mol%) and doped with high Tm~(3+) content (up to 10,000 ppm) were prepared, and their luminescence properties were investigated under excitation with 800 nm laser. The influences of doping concentration on Judd-Ofelt intensity parameter Ω_i, spontaneous transition probability A, fluorescence branching ratio β, and radiative lifetime τ_(rad) of Tm~(3+) in the samples were studied. Four infrared emission bands observed were centered at 1.48, 1.8, 2.3, and 3.8 μm, corresponding to optical transitions ~3H_4 → ~3F_4, ~3F_4 → ~3H_6, ~3H_4 → ~3H _5 and ~3H_5 → ~3F_4, respectively. For 1.0 wt.% Tm~(3+): doped sample, no concentration quenching was observed and its emission cross-sections at 2.3 and 3.8 μm calculated by using Füchtbauer-Ladenburg equation were 6.85 × 10 ~(-21) and 7.66 × 10~(-21) cm ~(-2), respectively.
机译：制备了基于72GeS _2-18Ga_2S_3-10CsI（摩尔％）和掺杂高Tm〜（3+）含量（最高10,000 ppm）的硫属化物玻璃，并在800 nm激发下研究了其发光性能激光。研究了掺杂浓度对样品中Tm〜（3+）的Judd-Ofelt强度参数Ω_i，自发转变概率A，荧光分支比β和辐射寿命τ_（rad）的影响。观察到的四个红外发射带分别位于1.48、1.8、2.3和3.8μm的中心，分别对应于〜3H_4→〜3F_4，〜3F_4→〜3H_6，〜3H_4→〜3H _5和〜3H_5→〜3F_4的光学跃迁。对于1.0 wt。％Tm〜（3+）：掺杂的样品，未观察到浓度猝灭，并且使用Füchtbauer-Ladenburg方程计算的其在2.3和3.8μm处的发射截面为6.85×10〜（-21）和7.66×分别为10〜（-21）cm〜（-2）。

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