论文标题
$^{4} i_ {15/2} \ rightArrow $$ $^{4} i_ {13/2} $ erbium erbium the MonoClinic Crystal Y $ _2 $ SIO $ _5 $ _5 $ _5 $ _5 $ _5 $ _5 $ _5 $ _5 $ _5 $ _5 $ _5
Demonstration of site-selective angular-resolved absorption spectroscopy of the $^{4}I_{15/2} \rightarrow $$^{4}I_{13/2}$ erbium transition in the monoclinic crystal Y$_2$SiO$_5$
论文作者
论文摘要
We study the angular dependence in polarized light of the optical absorption for the Er$^{3+}$ transition $^{4}I_{15/2} \rightarrow $$^{4}I_{13/2}$ in Y$_2$SiO$_5$, revealing thus the associated anisotropy and the orientation of the related absorption principal directions in the dielectric plan垂直于单斜轴b。测量在低温下进行。这使我们能够隔离地面和激发态的最低晶体水平。我们在y $ _2 $ _5 $ _5 $矩阵中的两个yttrium替代站点中范围独立地解决并独立表征。在仅考虑研究的介电平面的同时，无法明确确定吸收张量成分。尽管如此，测量值明显地表明，在低温下解决的这种兴趣转变不仅是磁极允许的转变，而且实际上是混合电动磁性转变。
We study the angular dependence in polarized light of the optical absorption for the Er$^{3+}$ transition $^{4}I_{15/2} \rightarrow $$^{4}I_{13/2}$ in Y$_2$SiO$_5$, revealing thus the associated anisotropy and the orientation of the related absorption principal directions in the dielectric plan perpendicular to the monoclinic axis b. The measurements are performed at low temperature. This allows us to isolate the lowest crystal field levels in the ground and excited states. We spectrally resolve and independently characterize the two yttrium substitution sites in the Y$_2$SiO$_5$ matrix. The absorption tensor components cannot be unambiguously determined yet while only considering the investigated dielectric plane. Still, measurements remarkably demonstrate that this transition of interest well resolved at low temperature is not only a magnetic-dipole allowed transition but indeed a hybrid electric-magnetic transition.
