Directionally controlled plasmon excitation in gold nanoparticles for near-field nanopatterning by femtosecond laser

Tomoya Miyanishi, Mitsuhiro Terakawa, Minoru Obara, Nikolay N. Nedyalkov, Petar A. Atanasov

    研究成果: Conference contribution

    1 引用 (Scopus)

    抜粋

    We present theoretical and experimental results of nanohole fabrication on a silicon substrate by plasmonic near field around multiple gold nanoparticles excited by oblique incidence of femtosecond laser. Using the enhanced near field around a gold nanoparticle, nanohole can be fabricated on the substrate surface even at the near-infrared laser excitation. The formation of nanoholes with the near-infrared incident wavelength will open up smart applications for new optical device fabrication in air. However, the plasmons inside gold nanoparticles are affected by the plasmons of neighboring gold particles, resulting in an alteration of near-field distribution and the shift of resonant wavelength of plasmons inside the gold particles. These cause inhomogeneous shape of nanoholes and decrease the near-field intensity on silicon substrate. Therefore it is necessary to control the direction of plasmon for precise nanohole fabrication. We propose a new method to reduce plasmon interaction between particles by using p-polarized irradiation at oblique incidence to the substrate surface. Experimental and theoretical study demonstrated that uniformed nanoholes can be achieved by restraining effects from neighboring plasmon when p-polarized beam is irradiated to gold nanoparticle arrays with optimal oblique incidence.

    元の言語English
    ホスト出版物のタイトルXVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
    DOI
    出版物ステータスPublished - 2010 12 1
    イベント18th International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers - Sofia, Bulgaria
    継続期間: 2010 8 302010 9 3

    出版物シリーズ

    名前Proceedings of SPIE - The International Society for Optical Engineering
    7751
    ISSN(印刷物)0277-786X

    Other

    Other18th International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
    Bulgaria
    Sofia
    期間10/8/3010/9/3

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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  • これを引用

    Miyanishi, T., Terakawa, M., Obara, M., Nedyalkov, N. N., & Atanasov, P. A. (2010). Directionally controlled plasmon excitation in gold nanoparticles for near-field nanopatterning by femtosecond laser. : XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers [77511X] (Proceedings of SPIE - The International Society for Optical Engineering; 巻数 7751). https://doi.org/10.1117/12.880738