ABSTRACT In this work, a single crystalline erbium/ytterbium silicate microplate, placed on a Si–SiO2 periodic channel substrate, is used to investigate the effect of surrounding refractive index on the emission efficiency of the materials. The light-emitting efficiency from the free-standing part of the microplate has been enhanced two times larger than that of the part supported by SiO2 substrate, due to the surrounding refractive index-dependent absorption coefficient of the materials. The relatively smaller refractive index of air surrounded the free-standing part contributes to the larger absorption coefficient hence higher emission intensity of the erbium/ytterbium silicate microplate.

中文翻译：

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独立式硅酸铒微孔板中增强的发光强度

摘要 在这项工作中，将单晶铒/镱硅酸盐微板放置在 Si-SiO2 周期性通道基板上，用于研究周围折射率对材料发射效率的影响。由于材料的周围折射率相关吸收系数，微孔板独立部分的发光效率比由 SiO2 衬底支撑的部分的发光效率提高了两倍。独立部分周围空气的相对较小的折射率有助于更大的吸收系数，因此铒/镱硅酸盐微板的发射强度更高。