Sub-diffraction-limit Observation Realized by Nonlinear Metamaterial Lens
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.
Cite
@article{arxiv.0905.0263,
title = {Sub-diffraction-limit Observation Realized by Nonlinear Metamaterial Lens},
author = {Zhiyu Wang and Yu Luo and Liang Peng and Jiangtao Huangfu and Tao Jiang and Dongxing Wang and Hongsheng Chen and Lixin Ran},
journal= {arXiv preprint arXiv:0905.0263},
year = {2009}
}
Comments
17 pages, 4 figures