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Influence of V-Shaped Metallic Subwavelength Slits with Variant Periods for Superfocusing

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Abstract

In this paper, we discussed the influence of a plasmonic lens with V-shaped metallic subwavelength slits and variant periods on transmission properties. In order to analyze the influence, a finite-difference time-domain numerical algorithm was adopted for computational numerical simulation of the plasmonic structures. The structures are flanked with the penetrated slits through a metal (Ag) film which is coated on a quartz substrate. Our simulation results demonstrated that different cone angles originated from the V-shaped slits generate different influences on the beam propagation. The width variation affects the intensity significantly. The cone angles formed by the V-shaped slits can change the focusing performance. These results are very encouraging for future study of the plasmonic lens-based applications.

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Acknowledgments

The work was supported by the National Natural Science Foundation of China (number 60877021).

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Authors and Affiliations

  1. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan Province, People’s Republic of China

    Yu Liu, Yongqi Fu & Xiuli Zhou

  2. State Key Laboratory of Optical Technology on Microfabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, People’s Republic of China

    Yongqi Fu

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  1. Yu Liu
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  2. Yongqi Fu
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  3. Xiuli Zhou
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Correspondence to Yongqi Fu.

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Liu, Y., Fu, Y. & Zhou, X. Influence of V-Shaped Metallic Subwavelength Slits with Variant Periods for Superfocusing. Plasmonics 5, 79–83 (2010). https://doi.org/10.1007/s11468-009-9119-x

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  • DOI: https://doi.org/10.1007/s11468-009-9119-x

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