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NEAR-FIELD CHARACTERIZATION OF THE OPTICAL PROPERTIES IN HIGHER ORDER PLASMONIC RESONANCES

机译:高阶等离子体共振中光学性质的近场表征

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摘要

Dipole and quadrupole surface plasmon polariton (LSPP) resonances of gold nanoparticle array were directly investigated by a near-field scanning optical microscope (NSOM) in the fiber-collection mode. Separated gold nanoparticles on the quartz substrate were fabricated by nanosphere lithography. Results demonstrate that controlling the incident polarization and angle of oblique incidence enables to excite dipolar and quadrupolar LSPP at 633- and 488-nm excitations. This observation facilitates the understanding of LSPP and interactions with nanostructures in the near field that can be used as a guideline for fabricating nanostructures in controlling spatial distributions of LSPP for ultra sensitive bio-/chemo-detectors or plasmonic metamaterials.
机译:金纳米粒子阵列的偶极和四极表面等离振子极化(LSPP)共振是通过近场扫描光学显微镜(NSOM)在纤维收集模式下直接研究的。通过纳米球光刻技术在石英基板上分离金纳米颗粒。结果表明,控制入射偏振和倾斜入射角能够在633和488 nm激发下激发双极和四极LSPP。该观察结果有助于理解LSPP以及与近场中纳米结构的相互作用,可以用作制造纳米结构的指南,以控制LSPP用于超灵敏生物/化学检测器或等离子超材料的空间分布。

著录项

  • 来源
    《Quantum sensing and nanophotonic devices VII》|2010年|P.76081E.1-76081E.8|共8页
  • 会议地点 San Francisco CA(US)
  • 作者单位

    Institute of Electro-Optical Science and Engineering, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan;

    rnInstitute of Biomedical Engineering, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan;

    rnInstitute of Biomedical Engineering, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan;

    rnInstitute of Electro-Optical Science and Engineering, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan;

    rnInstitute of Electro-Optical Science and Engineering, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TP212;
  • 关键词

    near-field microscopy; surface plasmons; subwavelength structures, nanostructures;

    机译:近场显微镜表面等离激元亚波长结构,纳米结构;

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