论文标题
在稀土离子的荧光中生成几乎纯且高度方向的磁光
Generation of nearly pure and highly directional magnetic light in fluorescence of rare earth ions
论文作者
论文摘要
已经进行了通过磁偶极子（MD）过渡的彻底分析，称为下方的磁光，对介电同质球或附近的三价稀土离子进行了彻底的分析。在寻找从磁光的荧光增强的过程中，人们面临着识别与MD转变荧光相比，由于多个电偶极子（ED）过渡引起的荧光的组合荧光变得可忽略不计。 We have succeeded in identifying a number of configurations with dielectric sphere parameters and a radial position of a trivalent rare-earth emitter wherein the branching ratio of the MD transition approaches its limit of one, implying that transitions from a given initial level (e.g., $^5$D$_0$-level of Eu$^{3+}$) are completely dominated by the MD transition. MD发射，辐射衰减速率和磁光的荧光的无量纲定向性可以分别增加$ 25 $，$ 10^3 $和$ 10^4 $。
A thorough analysis of the emission via the magnetic dipole (MD) transition, called magnetic light below, of trivalent rare-earth ions in or near dielectric homogeneous spheres has been performed. In the search for enhancement of fluorescence from magnetic light, one faces the difficult task of identifying the regions where the combined fluorescence due to multiple electric dipole (ED) transitions becomes negligible compared to the fluorescence of the MD transition. We have succeeded in identifying a number of configurations with dielectric sphere parameters and a radial position of a trivalent rare-earth emitter wherein the branching ratio of the MD transition approaches its limit of one, implying that transitions from a given initial level (e.g., $^5$D$_0$-level of Eu$^{3+}$) are completely dominated by the MD transition. The dimensionless directivity of the MD emission, the radiative decay rates, and the fluorescence of the magnetic light can be increased by a factor of more than $25$, $10^3$, and $10^4$, respectively.
