A novel erbium-doped tellurite glass containing copper nanoparticles (CuNP) prepared by a melting-quenching method is reported. The efficient coupling between CuNP and Er³⁺ ions rendered a strong emission enhancement, reaching maximum values on the order of 10 times for the intensity of the ⁴I_9/2 →⁴I_15/2 and ²H_11/2 →⁴I_13/2 transitions, at 794 nm and 805 nm, respectively. The energy transfer mechanism of the coupling between CuNP dipoles and Er³⁺ ions was also discussed.

中文翻译：

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含碲玻璃的铜纳米粒子上on离子的表面增强荧光

报道了一种通过熔融淬火法制备的含有铜纳米颗粒（CuNP）的新型掺-碲酸盐玻璃。CuNP和Er之间的高效耦合³⁺离子呈现强烈的发光增强，在10倍的量级上达到最大值的强度⁴余_9/2 → ⁴我_15/2和² ħ _11/2 → ⁴予_13/2跃迁分别在794 nm和805 nm处。还讨论了CuNP偶极子与Er ³⁺离子耦合的能量转移机理。