Surface plasmon modes guided by Ga-doped ZnO layers bounded by different dielectrics
Surface plasmon modes guided by Ga-doped ZnO layers bounded by different dielectrics
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DOI：
10.1063/1.3608313
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发表时间：
2011-07
影响因子：
4
通讯作者：
Wasanthamala Badalawa;H. Matsui;A. Ikehata;H. Tabata
中科院分区：
文献类型：
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作者：
Wasanthamala Badalawa;H. Matsui;A. Ikehata;H. Tabata
我们报告了两种类型的表面等离子体激元（SP）模式引导的Ga掺杂的ZnO（ZnO：Ga）层之间的空气和玻璃。通过衰减全反射测量，在空气-ZnO界面处发现具有漏波的对称SP（s-）模，并显示出141至107 nm的截止厚度区域。因此，只有一个不对称的SP（a-）模式绑定在ZnO-玻璃界面，证实了数值分析和时域有限差分模拟。s-和a-模式的ZnO：Ga层表现出高的截止厚度和强烈的限制SP场在空气-ZnO和ZnO-玻璃界面，分别。
We report two types of surface plasmon (SP) modes guided by a Ga-doped ZnO (ZnO:Ga) layer bounded between air and glass. A symmetric SP (s-) mode having leaky waves was found at an air-ZnO interface by attenuated total reflection measurements and showed a cutoff thickness region from 141 to 107 nm. Consequently, only an asymmetric SP (a-) mode bound at a ZnO-glass interface remained, as confirmed by numerical analyses and finite-difference time-domain simulations. s- and a-modes of the ZnO:Ga layer exhibited a high cutoff thickness and a strongly confined SP field at air-ZnO and ZnO-glass interfaces, respectively.