Phys. Rev. Lett. 106, 047402 (2011) [4 pages]

Harmonic Image Reconstruction Assisted by a Nonlinear Metmaterial Surface

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Zhiyu Wang¹, Yu Luo^1,3, Tao Jiang¹, Zheng Wang^2,*, Jiangtao Huangfu^1,†, and Lixin Ran^1,‡
¹Department of Information and Electronic Engineering, Zhejiang University, Hangzhou 310027, China
²Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
³The Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, UK

Received 19 August 2010; published 25 January 2011

We experimentally demonstrate a microwave far-field image reconstruction modality with the transverse resolution exceeding the diffraction limit by using a single layer of highly nonlinear metamaterial. The harmonic fields of the nonlinear metamaterial surface allow the far-field propagation of wave fronts with spatial frequencies several times higher than that of the fundamental field. Near-field images can thus be mathematically recovered from the far-field patterns of the harmonic fields.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.106.047402

DOI:

10.1103/PhysRevLett.106.047402

PACS:

78.67.Pt, 42.70.Mp, 84.40.-x

^*Corresponding author: zhwang@MIT.EDU

^†Corresponding author: huangfujt@zju.edu.cn

^‡Corresponding author: ranlx@zju.edu.cn

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Phys. Rev. Lett. 106, 047402 (2011) [4 pages]

Harmonic Image Reconstruction Assisted by a Nonlinear Metmaterial Surface