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Focusing short-wavelength surface plasmons by a plasmonic mirror

机译：通过等离子体镜聚焦短波长表面等离子体

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摘要

Emerging applications in nanotechnology, such as super-resolution imaging, ultra-sensitive biomedical detection, and heat-assisted magnetic recording, require plasmonic devices that can generate intense optical spots beyond the diffraction limit. One of the important drawbacks of surface plasmon focusing structures is their complex design, which is significant for ease of integration with other nanostructures and fabrication at low cost. In this study, a planar plasmonic mirror without any nanoscale features is investigated that can focus surface plasmons to produce intense optical spots having lateral and vertical dimensions of lambda/9.7 and lambda/80, respectively. Intense optical spots beyond the diffraction limit were produced from the plasmonic parabolic mirror by exciting short-wavelength surface plasmons. The refractive index and numerical aperture of the plasmonic parabolic mirror were varied to excite short-wavelength surface plasmons. Finite-element method simulations of the plasmonic mirror and scanning near-field optical microscopy experiments have shown very good agreement. (C) 2018 Optical Society of America
机译：纳米技术中的新兴应用，如超分辨率成像，超敏感的生物医学检测和热辅助磁记录，需要可以产生超出衍射极限的强光学点的等离子体装置。表面等离子体聚焦结构的一个重要缺点是它们的复杂设计，这对于以低成本易于整合并以低成本的制造而言是显着的。在该研究中，研究了没有任何纳米级特征的平面等离子体镜，其可以聚焦表面等离子体以产生具有λ/ 9.7和λ/ 80的横向和垂直尺寸的强光学点。超出衍射极限的强光光斑通过激发短波长表面等离子体从等离子体抛物镜产生。等离子体抛物面镜的折射率和数值孔改变为激发的短波长表面等离子体。有限元方法模拟等离子体镜和扫描近场光学显微镜实验表明了很好的一致性。 （c）2018年光学学会

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  • 来源
    《Optics Letters》 |2018年第9期|共4页
  • 作者

    Ogut Erdem; Yanik Cenk; Kaya Ismet Inonu; Ow-Yang Cleva; Sendur Kursat;

  • 作者单位

    FIDES Engn Teknopk Istanbul TR-34906 Istanbul Turkey;

    Sabanci Univ Fac Engn &

    Nat Sci TR-34956 Istanbul Turkey;

    Sabanci Univ Fac Engn &

    Nat Sci TR-34956 Istanbul Turkey;

    Sabanci Univ Fac Engn &

    Nat Sci TR-34956 Istanbul Turkey;

    Sabanci Univ Fac Engn &

    Nat Sci TR-34956 Istanbul Turkey;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
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