| Optical properties of phosphate glasses co-doped with Yb~（3＋） and silver nanoparticles |
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| 作者姓名： | M.A.Vallejo H. ;M.A.Martinez G. ;A.V.Kiryanov ;J.L.Lucio M. |
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| 作者单位： | [1]Centro de Investigaciones en Optica, Loma del Bosque 115, Col. Lomas del Campestre, Leon 37150, Guanajuato, Mexico; [2]Division de Ciencias e Ingenierias del Campus Leon de la Universidad de Guanajuato. Loma del Bosque 103, Col. Lomas del Campestre 37150, Leon Guanajuato, Mexico |
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| 基金项目： | financially supported by the CONACy T（Grant No.CB-2009-136186-F） |
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| 摘 要： | We report the fabrication and spectroscopic characterization of Yb^3＋-doped phosphate glass, also containing silver nitrate. Scanning electron microscopy（SEM） provides the evidence of the formation of silver nano-particles（SNPs）, which are formed as a consequence of melting and thermal decomposition of Ag NO3. Absorption spectra of the samples in the visible-to-near-infrared spectral range reveal the presence of bands centered at 410 nm associated with the SNP-plasmon resonance, and at 976 nm due to the Yb^3＋. Under 916-nm laser-diode pumping, the effect of the SNP reflects that： i） the fluorescence in the 950-nm–1150-nm spectral range is strongly enhanced（～ 30 times）, while the fluorescence decay time associated with the ^2F5/2→^2F7/2transition of Yb^3＋ increases 25%, and ii） the basic lasing properties（saturation pumping intensity, the emission and absorption cross sections） are substantially improved.
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| 关 键 词： | 银纳米颗粒 磷酸盐玻璃 共掺杂 光学特性 荧光衰减时间 单核苷酸多态性 扫描电子显微镜 激光二极管泵浦 |
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