Surface plasmon modes guided by Ga-doped ZnO layers bounded by different dielectrics

被引：17

作者：

Badalawa, Wasanthamala ^{[1
]}

Matsui, Hiroaki ^{[1
]}

Ikehata, Akifumi ^{[2
]}

Tabata, Hitoshi ^{[1
,3
]}

机构：

[1] Univ Tokyo, Dept Elect Engn & Informat Syst, Bunkyo Ku, Tokyo 1138656, Japan

[2] Natl Food Res Inst, Analyt Sci Div, Nondestruct Evaluat Lab, Tsukuba, Ibaraki 3058642, Japan

[3] Univ Tokyo, Dept Bioengn, Bunkyo Ku, Tokyo 1138656, Japan

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 01期

关键词：

OPTICAL-PROPERTIES; THIN-FILMS;

D O I：

10.1063/1.3608313

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. (C) 2011 American Institute of Physics. [doi:10.1063/1.3608313]

引用

页数：3

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