Sub-diffraction-limit Observation Realized by Nonlinear Metamaterial Lens release_ewlhswrjijhshf77tmmjumdjge

by Zhiyu Wang, Yu Luo, Liang Peng, Jiangtao Huangfu, Tao Jiang, Dongxing Wang, Hongsheng Chen, Lixin Ran

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2009  

Abstract

In this paper, we show by experiment that by covering a thin flat nonlinear lens on the sources, the sub-diffraction-limit observation can be achieved by measuring either the near-field distribution or the far-field radiation of the sources at the harmonic frequencies and calculating the inverse Fourier transformation to obtain the sub-wavelength imaging. Especially, the sub-wavelength image calculated from measured far-field data demonstrates very clear resolution. Since metamaterials included with active elements can easily behave strong nonlinearity under very weak incident electromagnetic powers, the application of the nonlinear lens proposed in this paper would have important potential in improving the sub-wavelength resolution in the near future.
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Date   2009-05-03
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arXiv  0905.0263v1
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