Optical switches based on magnesium lanthanide alloy hydrides
Optical switches based on magnesium lanthanide alloy hydrides
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DOI：
10.1063/1.119169
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发表时间：
1997-06
影响因子：
4
通讯作者：
P. Sluis;M. Ouwerkerk;P. A. Duine
中科院分区：
文献类型：
--
作者：
P. Sluis;M. Ouwerkerk;P. A. Duine
结果表明，镀有钯的稀土镁合金的薄层通过氢浓度的变化可逆地经历光学跃迁，正如最近对纯稀土元素所显示的那样。利用这些层，可以构建表现出三种不同光学状态的光学开关：高氢浓度下的色中性透明状态、中等氢压力下的不透明暗吸收状态以及低氢压力下的高反射金属状态。透明态与反射态的透过率之比大于1000。
It is shown that thin layers of palladium coated magnesium lanthanide alloys reversibly go through an optical transition by variation of the hydrogen concentration, just as has recently been shown for pure lanthanides. With these layers optical switches can be constructed that exhibit three different optical states: a color-neutral transparent state at high hydrogen concentration, a nontransparent dark absorbing state at intermediate hydrogen pressures, and a highly reflective metallic state at low hydrogen pressures. The ratio in transmission between the transparent state and the reflecting state is more than 1000.