Visualization of Plasmon-Exciton Interactions by Scanning Near-Field Optical Microscopy

Asami Yokozawa, Seiju Hasegawa, Keisuke Imaeda, Kohei Imura*

*この研究の対応する著者

研究成果: Article査読

抄録

The electronic properties of a substance are perturbed by interactions of elementary excitations. The optical properties of the interacting states have been extensively studied and revealed to be correlated with the eigenfunctions of the isolated systems. On the other hand, the spatial characteristics of the states have been little studied because of the diffraction limit of light. In this study, we examine plasmon and exciton interactions in silver nanoplate and organic J-aggregate hybrid structures using scanning near-field optical microscopy. We reveal that the light transmission is enhanced when the plasmon and exciton resonantly interact with each other. We visualize the spatial distribution of the interacting states and find that the interaction of the high-order plasmons with the exciton enables manipulation of the electronic states in a spatially resolved manner. This study demonstrates that the optical field can be spatially controlled via coupling of the elementary excitations.

本文言語English
ページ(範囲)24515-24520
ページ数6
ジャーナルJournal of Physical Chemistry C
125
44
DOI
出版ステータスPublished - 2021 11 11

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • エネルギー(全般)
  • 物理化学および理論化学
  • 表面、皮膜および薄膜

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