Uniform near-field nanopatterning due to the field distribution control by oblique femtosecond laser irradiation to silicon and gold nanoparticles

Tomoya Miyanishi, Mitsuhiro Terakawa, Minoru Obara

    研究成果: Conference contribution

    抄録

    We present near-field optical properties around silicon and gold nanoparticles aligned on a silicon substrate excited by oblique incidence femtosecond laser for nanohole processing. Near-field nanofabrication will open up smart applications for new optical devices with high-throughput processing. The near field around silicon and gold particles is explained by Mie scattering theory, while the near field around gold nanoparticles is explained by plasmon polaritons inside nanoparticles. With gold nanoparticles, theoretical study revealed that the incident laser energy is concentrated into the contact point between the particle and the substrate due to the image charge inside the substrate at any incident angles. With particles with a dielectric constant as high as silicon, the polarized charge shows a similar effect to the plasmon charge. Therefore the distribution of the concentrated energy provided with silicon nanoparticles is similar to that of gold nanoparticle.

    本文言語English
    ホスト出版物のタイトルProceedings of 2011 1st International Symposium on Access Spaces, ISAS 2011
    ページ197-201
    ページ数5
    DOI
    出版ステータスPublished - 2011 8 23
    イベント2011 1st International Symposium on Access Spaces, ISAS 2011 - Yokohama, Japan
    継続期間: 2011 6 172011 6 19

    出版物シリーズ

    名前Proceedings of 2011 1st International Symposium on Access Spaces, ISAS 2011

    Other

    Other2011 1st International Symposium on Access Spaces, ISAS 2011
    CountryJapan
    CityYokohama
    Period11/6/1711/6/19

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Electrical and Electronic Engineering

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