Plasmonic Lenses: A Review |
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| Authors: | Yongqi Fu Xiuli Zhou |
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| Affiliation: | (1) School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu, 610054, Sichuan Province, People’s Republic of China;(2) Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, People’s Republic of China |
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| Abstract: | Four types of plasmonic lenses for the purpose of superfocusing designed on the bases of approximate negative refractive index concept, subwavelength metallic structures, waveguide mode were introduced, and curved chains of nanoparticles, respectively, were introduced. Imaging mechanism, fabrication, and characterization issues were presented. Theoretical analyses of the illumination with different polarization states on focusing performance of the plasmonic lenses were given also. In addition, a hybrid Au-Ag plasmonic lens with chirped slits for the purpose of avoiding oxidation of Ag film was presented. |
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