[15p-K506-1~19] 3.11 Nanoscale optical science and near-field optics

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)

[15p-K506-8] Numerical Study on the Transmission Enhancement of the Inverted Cone-shaped Plasmonic Bull's-eye Device

〇(D)Tatsunori Oiwa¹, Shin'ichi Warisawa¹, Reo Kometani¹ (1.GSFS, Univ. of Tokyo)

Keywords:

Surface plasmon plariton,Bull's eye structure,Plasmonic structure

This study aims to enhance the transmittance of a plasmonic bull's eye structure (BE) by proposing a concave conical shape for BE, which is conventionally flat. Numerical analysis suggests that the transmittance of the conical BE is 155% higher than that of a planar BE with the same number of grooves (six) and 22% higher than that of a planar BE with the same device area (ten grooves).