期刊
OPTICS LETTERS
卷 42, 期 16, 页码 3239-3242出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.42.003239
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资金
- National Natural Science Foundation of China (NSFC) [61575092]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1601051C]
- China Postdoctoral Science Foundation [2016M601773]
- Key Research and Development Program, Ministry of Science and Technology of China (MOST) [2016YFA0202100, 2017YFA0303700]
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
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