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Extrinsic Chirality by Interference between Two Plasmonic Modes on an Achiral Rectangular Nanostructure.
Oshikiri, Tomoya; Sun, Quan; Yamada, Hiroki; Zu, Shuai; Sasaki, Keiji; Misawa, Hiroaki.
Afiliación
  • Oshikiri T; Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
  • Sun Q; Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
  • Yamada H; Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
  • Zu S; Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
  • Sasaki K; Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
  • Misawa H; Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
ACS Nano ; 15(10): 16802-16810, 2021 Oct 26.
Article en En | MEDLINE | ID: mdl-34582163
The optical near field (NF) induced by circularly polarized light (CPL) is a hot scientific topic. We observed a chiral NF intensity distribution on a series of achiral gold nanorectangular structures (Au-NRs) under CPL irradiation by using multiphoton photoemission electron microscopy (MP-PEEM). Additionally, the differential NF spectra under left and right CPL irradiation, which represent the asymmetry of the NF intensity distribution, were investigated. We propose an interpretation that the chiral NF intensity distribution on an achiral metallic nanostructure is extrinsically generated by the interference between two plasmonic modes by combining state-of-the-art MP-PEEM techniques and the classical oscillator model. Our interpretation well explains both the experimental and simulation results. Furthermore, the intensity of the NF and its phase angle of each mode under linearly polarized light irradiation were revealed to be critical factors for the generation of extrinsic chirality in the NF intensity distribution.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: ACS Nano Año: 2021 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: ACS Nano Año: 2021 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos