Single-layer metallodielectric nanostructures as dual-band midinfrared filters

被引：25

作者：

Tang, Yan ^{[1
]}

Bossard, Jeremy A. ^{[1
]}

Werner, Douglas H. ^{[1
]}

Mayer, Theresa S. ^{[1
]}

机构：

[1] Penn State Univ, Ctr Nanoscale Sci, Dept Elect Engn, University Pk, PA 16802 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 26期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2944137

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a design and fabrication strategy for creating single-layer metallodielectric nanostructures with dual-band filtering properties at midinfrared wavelengths. Genetic algorithm optimization was used to determine an arrangement of nanometer-scale metal pixels within one unit cell of a two-dimensional periodic array that best satisfied the user-specified filter response and nanofabrication design rule constraints. Infrared transmission and reflection spectra measured on an optimized nanostructure array had two narrow stop bands blueshifted by 0.2 mu m from the designed center wavelengths of 3.3 and 4.1 mu m, with transmission attenuation greater than -20 dB and reflection attenuation less than -1.5 dB in each band. This strategy provides a practical and efficient approach to design metallodielectric nanostructures needed for photonic device applications as well as for future low-loss refractive index engineered metamaterials. (c) 2008 American Institute of Physics.

引用

页数：3

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