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首页> 外文期刊>Journal of Materials Science. Materials in Electronics >Optical and photoluminescence properties of Er-doped (GeSe_2)_(1-x)(Ga_2Se_3)_x bulk glasses
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Optical and photoluminescence properties of Er-doped (GeSe_2)_(1-x)(Ga_2Se_3)_x bulk glasses

机译：掺Er（GeSe_2）_（1-x）（Ga_2Se_3）_x大块玻璃的光学和光致发光性质

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摘要

Erbium (Er) doped chalcogenide glasses are important candidates for active optical wave guide applications at around 1550 nm. We have investigated Er~(3+) doped stoichiometric (GeSe_2)_(1-x)(Ga_2Se_3)_x chalcogenide glasses (Ga content from 6 to 24 at.%, Er~(3+) from 0.3 to 4 at.%). Bulk samples were investigated by X-ray diffraction (XRD), photoluminescence (PL) and optical transmittance measurements. We have observed that the PL intensity is nearly proportional to the Er~(3+) concentration up to 2 at.% and then it tends to decrease slightly beyond this concentration. Consequently Er~(3+) ions seem to be well dispersed and optically active up to 2 at.% Er~(3+). In agreement with previous papers, we have found that Ga is extremely important for Er~(3+) activation. PL results indicate that the critical Ga to Er concentration ratio for dissolving maximum Er is about 5. Glasses become inhomogeneous in compositions that have more that 12 at.% Ga.
机译：掺Er（Er）的硫族化物玻璃是1550 nm左右的有源光波导应用的重要候选材料。我们研究了Er〜（3+）掺杂的化学计量（GeSe_2）_（1-x）（Ga_2Se_3）_x硫族化物玻璃（Ga含量从6到24 at。％，Er〜（3+）从0.3到4 at。％ ）。通过X射线衍射（XRD），光致发光（PL）和光透射率测量研究了大块样品。我们已经观察到PL强度几乎与Er〜（3+）浓度成正比，直至2 at。％，然后在该浓度以上趋于稍微降低。因此，Er〜（3+）离子似乎分散良好，并且具有高达2 at。％Er〜（3+）的光学活性。与以前的论文一致，我们发现Ga对Er〜（3+）的激活极为重要。 PL结果表明，溶解最大Er的Ga / Er临界浓度比约为5。玻璃在Ga含量大于12 at。％的成分中变得不均匀。

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