Freestanding optical negative-index metamaterials of green light

被引：11
作者：
Liang, Yuzhang [1 ,2 ]
Yu, Zhiyong [1 ,2 ]
Ruan, Ningjuan [3 ]
Sun, Qian [3 ]
Xu, Ting [1 ,2 ]
机构：
[1] Nanjing Univ, Coll Engn & Appl Sci, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[2] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[3] Beijing Inst Space Mech & Elect, Beijing 100094, Peoples R China
来源：
OPTICS LETTERS | 2017年 / 42卷 / 16期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
REFRACTIVE-INDEX; VISIBLE SPECTRUM; DUAL-BAND; WAVELENGTH;
D O I：
10.1364/OL.42.003239
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A freestanding, multilayered fishnet metamaterial is reported to experimentally exhibit a negative refractive index in the green-light spectral range. The realization of a negative refractive index at such a high frequency range mainly originates from low-loss magnetic resonance and interactions between the neighboring functional layers. Based on a good agreement between the numerically simulated and experimentally measured transmittance and reflectance spectra, a single negative refractive index of -0.76 with a figure-of-merit of 0.5 is achieved for the metamaterial at the wavelength of 532 nm. (C) 2017 Optical Society of America
引用
收藏
页码：3239 / 3242
页数：4
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