金属ナノ構造における局在プラズモンモードの動的近接場イメージング

• 井村 考平

  早稲田大学 JSTさきがけ

• 岡本 裕巳

  分子科学研究所 総合研究大学院大学

書誌事項

タイトル別名

• Near-Field Optical Microscopy of Localized Surface Plasmons Excited in Noble Metal Nanostructures
• キンゾク ナノ コウゾウ ニ オケル キョクザイプラズモンモード ノ ドウテキ キンセツジョウ イメージング

抄録

Scanning near-field optical microscope is able to achieve a nanometer spatial resolution, and is useful for visualization of elementary excitations in nanomaterials. Combination of the near-field optical microscope with the time-resolved spectroscopy enables us to visualize spatio-temporal behaviors of the excited states. We apply this imaging technique to the studies of static and dynamic optical properties of single gold nanorods. The static near-field image of a single gold nanorod shows a periodic oscillation along the long axis of the nanorod, and is attributed to a plasmon mode resonantly excited. The dynamic near-field image of the nanorod shows a characteristic spatial feature, which is very different from that of the static image. We discuss the origin of the dynamic near-field image, and the image is assigned to variations of plasmon modes induced by the photo-excitation. We also discuss the future prospect of the dynamic near-field microscopy and its applications to fundamental studies on plasmonic materials.

収録刊行物

• レーザー研究

  レーザー研究 40 (8), 571-, 2012

  一般社団法人 レーザー学会

キーワード

• Near-field optical microscopy, Plasmon mode, Gold nanorod, Time-resolved spectroscopy,Photonic local density-of-states

詳細情報

• CRID: 1390848250132872192
• NII論文ID: 10030926046
• NII書誌ID: AN00255326
• DOI: 10.2184/lsj.40.8_571
• ISSN: 13496603
• ISSN: 03870200
• NDL書誌ID: 023945840
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I023945840
• Web Site: https://www.jstage.jst.go.jp/article/lsj/40/8/40_571/_pdf
• 本文言語コード: ja
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