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Conferences > OPJ > 2017 > NP > 30pON12
  • 2017 OPJ-OSA Joint Symposia on Nanophotonics and Digital Photonics
  • OSA Technical Digest (online) (Optica Publishing Group, 2017),
  • paper 30pON12

Excitation and Probing of Infrared Nanoantenna Modes under Oblique Illumination

Shuta Kitade, Shingo Usui, Ikki Morichika, Kensuke Kohmura, Fumiya Kusa, and Satoshi Ashihara

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Abstract

We study near-field distributions of infrared nanoantennas under oblique illumination. We obtain the amplitude- and phase-resolved images of the near-fields on Au nanoantennas by use of the scattering-type scanning near-field optical microscopy. Resonant excitation of the 1st-order (dipole) mode and that of the 2nd-order (quadrupole) mode, and their asymmetric near-field distributions are experimentally visualized and numerically reproduced.

© 2017 Optical Society of Japan

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