Angular distribution of emission from hyperbolic metamaterials

被引：20
|
作者：
Gu, Lei [1 ]
Livenere, J. E. [1 ]
Zhu, G. [1 ]
Tumkur, T. U. [1 ]
Hu, H. [2 ]
Cortes, C. L. [2 ]
Jacob, Z. [2 ]
Prokes, S. M. [3 ]
Noginov, M. A. [1 ]
机构：
[1] Norfolk State Univ, Ctr Mat Res, Norfolk, VA 23504 USA
[2] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada
[3] US Navy, Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA
来源：
SCIENTIFIC REPORTS | 2014年 / 4卷
基金：
美国国家科学基金会;
关键词：
NEGATIVE REFRACTION; OPTICAL HYPERLENS; INDEX;
D O I：
10.1038/srep07327
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We have studied angular distribution of emission of dye molecules deposited on lamellar metal/dielectric and Si/Ag nanowire based metamaterials with hyperbolic dispersion. In agreement with the theoretical prediction, the emission pattern of dye on top of lamellar metamaterial is similar to that on top of metal. At the same time, the effective medium model predicts the emission patterns of the nanowire array and the dye film deposited on glass to be nearly identical to each other. This is not the case of our experiment. We tentatively explain the nearly Lambertian (proportional to cos theta) angular distribution of emission of the nanowire based sample by a surface roughness.
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页数：5
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