Gold-silicon metamaterial with hyperbolic transition in near infrared

被引：17

作者：

Lang, S. ^{[1
]}

Lee, H. S. ^{[1
]}

Petrov, A. Yu. ^{[1
]}

Stoermer, M. ^{[2
]}

Ritter, M. ^{[3
]}

Eich, M. ^{[1
]}

机构：

[1] Hamburg Univ Technol, Inst Opt & Elect Mat, D-21073 Hamburg, Germany

[2] Helmholtz Zentrum Geesthacht Ctr Mat & Coastal Re, Inst Mat Res, D-21502 Geesthacht, Germany

[3] Hamburg Univ Technol, Electron Microscopy Unit, D-21073 Hamburg, Germany

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 02期

关键词：

REFRACTIVE-INDEX;

D O I：

10.1063/1.4813499

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, we focus on the creation and characterization of a hyperbolic metamaterial for near infrared. To shift the hyperbolic transition there, a stack of alternating 7 nm gold and 42 nm silicon layers is chosen. Samples are manufactured using magnetron sputtering and different measurements confirm their structure. We fit the Drude model of gold to reproduce measured reflectivity and transmittance by simulations. The collision frequency of the thin film gold is increased by 9 times, which shifts the transition of our metamaterial to the hyperbolic regime to even larger wavelengths. The performance is comparable to other proposed metamaterials. (C) 2013 AIP Publishing LLC.

引用

页数：4

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