[14p-K305-1~14] 3.1 Basic optics and frontier of optics

5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)

[14p-K305-13] Wavelength-dependent optical chirality in the enhanced near field associated with rotating plasmon mode excitation

〇Naoki Ichiji¹, Takuya Ishida¹, Ikki Morichika¹, Daigo Oue^2,3, Tetsu Tatsuma¹, Satoshi Ashihara¹ (1.Tokyo Univ. IIS, 2.RIKEN., 3.ICL)

Keywords:

plasmonics,Optical chirality,Circular polarized light

We investigated the mechanism of enhanced optical chirality in the near field by exciting unidirectional rotational plasmon modes through circularly polarized light irradiation on plasmonic nanostructures. The notable wavelength-dependent difference observed between complementary disc and hole structures, which share the same resonant wavelength, can be explained by a model calculation introducing the phase-delay characteristics of the enhanced near field relative to the incident light.