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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 >On competition between two types of anti-Stokes emission in Ho3+ and Nd3+ ions in glasses
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On competition between two types of anti-Stokes emission in Ho3+ and Nd3+ ions in glasses

机译：关于玻璃中Ho3 +和Nd3 +离子的两种反斯托克斯发射之间的竞争

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摘要

An interesting competition between two anti-Stokes emissions has been observed and interpreted in ZBLAN and fluoroaluminate (ALF) glasses activated by Ho3+ and Nd3+ ions, respectively. The intensity of an emission line situated spectrally close to the excitation wavelength, was seen to increase with temperature, whereas the intensity of another, upconverted emission line, in the same conditions, was seen to decrease. Both effects are believed to be caused by the same mechanism, which we have identified as the anti-Stokes multiphonon excitation of the state responsible for the first emission, followed by upconversion of the ESA (excited state absorption) or an energy transfer type process. Analysis of the kinetics of the observed effects enabled us to fit a theoretical model to the experimental data. It appears likely that the described competition may be a universal feature not restricted to the materials described in this work.
机译：在分别由Ho3 +和Nd3 +离子激活的ZBLAN和氟铝酸盐（ALF）玻璃中，观察到并解释了两种反斯托克斯排放之间的有趣竞争。光谱上接近激发波长的发射线的强度会随温度增加而增加，而在相同条件下，另一条上转换的发射线的强度会降低。据信这两种效应都是由相同的机制引起的，我们已将其确定为负责第一次发射的状态的反斯托克斯多声子激发，然后是ESA的上转换（激发态吸收）或能量转移类型的过程。对观察到的效应的动力学分析使我们能够将理论模型拟合到实验数据。所描述的竞赛似乎是一个通用功能，不限于本作品中描述的材料。

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