期刊
PHYSICAL REVIEW LETTERS
卷 106, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.067402
关键词
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资金
- Spanish MICINN [CSD2008-00066, TEC2008-06871-C02]
- Valencian government [PROMETEO-2010-087]
- MICINN
- EPSRC (U.K.)
- Engineering and Physical Sciences Research Council [EP/H000917/2, EP/H000917/1] Funding Source: researchfish
- EPSRC [EP/H000917/2, EP/H000917/1] Funding Source: UKRI
We experimentally demonstrate a low-loss multilayered metamaterial exhibiting a double-negative refractive index in the visible spectral range. To this end, we exploit a second-order magnetic resonance of the so-called fishnet structure. The low-loss nature of the employed magnetic resonance, together with the effect of the interacting adjacent layers, results in a figure of merit as high as 3.34. A wide spectral range of negative index is achieved, covering the wavelength region between 620 and 806 nm with only two different designs.
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