ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Retrieval of high-order susceptibilities of nonlinear metamaterials |
Zhi-Yu Wang(王志宇), Jin-Peng Qiu(邱仅朋), Hua Chen(陈华), Jiong-Jiong Mo(莫炯炯), Fa-Xin Yu(郁发新) |
School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China |
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Abstract Active metamaterials embedded with nonlinear elements are able to exhibit strong nonlinearity in microwave regime. However, existing S-parameter based parameter retrieval approaches developed for linear metamaterials do not apply in nonlinear cases. In this paper, a retrieval algorithm of high-order susceptibilities for nonlinear metamaterials is derived. Experimental demonstration shows that, by measuring the power level of each harmonic while sweeping the incident power, high-order susceptibilities of a thin-layer nonlinear metamaterial can be effectively retrieved. The proposed approach can be widely used in the research of active metamaterials.
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Received: 16 November 2016
Revised: 09 April 2017
Accepted manuscript online:
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PACS:
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42.65.An
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(Optical susceptibility, hyperpolarizability)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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81.05.Xj
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(Metamaterials for chiral, bianisotropic and other complex media)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61401395 and 61604128), the Scientific Research Fund of Zhejiang Provincial Education Department, China (Grant No. Y201533913), and the Fundamental Research Funds for the Central Universities, China (Grant Nos. 2016QNA4025 and 2016QN81002). |
Corresponding Authors:
Jiong-Jiong Mo
E-mail: jiongjiongmo@zju.edu.cn
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Cite this article:
Zhi-Yu Wang(王志宇), Jin-Peng Qiu(邱仅朋), Hua Chen(陈华), Jiong-Jiong Mo(莫炯炯), Fa-Xin Yu(郁发新) Retrieval of high-order susceptibilities of nonlinear metamaterials 2017 Chin. Phys. B 26 094207
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