Broadband extraordinary optical transmission of sub-wavelength metallic grating with convex-paraboli

来源 :International Conference on Nanoscience & Technology,China 2 | 被引量 : 0次 | 上传用户：asdfghjka

【摘要】

：

【作者】

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Yusheng Zhai Qilong Wang Xiaohua Li

【机构】

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School of Electronic Science and Engineering,Southeast University,Nanjing,210096,China

【出处】

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International Conference on Nanoscience & Technology,China 2

【发表日期】

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2013年3期

【关键词】

：

surface plasmon grating subwavelength transmission FDTD

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　　The extraordinary optical transmission (EOT) phenomenon of sub-wavelength structures including periodic metallic gratings has been observed for years.Due to the resonant mechanism, the transmission spectra are limited to the relative narrow bandwidth.In this paper, we propose a novel nano-seale silver film with periodical narrow slits, which have convex-parabolic walls.The film was designed to be deposited on the SiO2 substrate.And the property of broadband extraordinary optical transmission (up to 80%) of the grating in visible range was calculated by FDTD simulation.The influences of the slit entrance width Win, slit exit width Wout, period P and slit depth h to the transmission spectra were theoretically analyzed.

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Broadband extraordinary optical transmission of sub-wavelength metallic grating with convex-paraboli

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