Refractive index changes of Pd-coated magnesium lanthanide switchable mirrors upon hydrogen insertion
Refractive index changes of Pd-coated magnesium lanthanide switchable mirrors upon hydrogen insertion
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DOI：
10.1063/1.369399
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发表时间：
1999-01-01
影响因子：
3.2
通讯作者：
Duine, PA
中科院分区：
文献类型：
--
作者：
von Rottkay, K;Rubin, M;Duine, PA
研究了掺氢后镀钯镁镧系可切换反射镜的光学效应及其复折射率的变化。在一个循环之后，在沉积态和脱氢态之间可以看到LnMg层的光学常数的显著变化。此外，确定了将Pd盖层切换为PdH盖层的光学效应。结果表明，Pd层主要限制叠层的可见光透射率为约35%-40%。而脱氢的LnMg层在550 nm处的消光系数在2.2和3.1之间，在透明状态下其低至10（-4）。这对于需要大的光学对比度的应用（例如，例如，在一个实施例中，光开关）。(C)1999年美国物理学会。[S0021-8979（99）05101- 4]。
The optical effect upon insertion of hydrogen into Pd-coated magnesium lanthanide switchable mirrors is investigated in terms of the changes of their complex refractive indices. A significant change in the optical constants of LnMg layers is seen between the as-deposited state and the dehydrided state after one cycle. Furthermore, the optical effect of switching the Pd cap layer to a PdH cap layer was determined. It is shown that the Pd layer mainly limits the visible transmittance of the hydrided stack to about 35%-40%. Whereas the extinction coefficient of dehydrided LnMg layers at 550 nm is between 2.2 and 3.1, it is as low as 10(-4) in the transparent state. This is of great promise to applications requiring large optical contrast (e. g., optical switches). (C) 1999 American Institute of Physics. [S0021-8979(99)05101- 4].