[14p-K506-1~17] 3.11 Nanoscale optical science and near-field optics

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[14p-K506-13] Near-field spectral properties and dephasing dynamics of Au nanoperiodic structures on Al₂O₃/Au substrate

〇(DC)Hiroki Takeuchi¹, Xiongjunyi Qian¹, Xiaotong Pan¹, Keisuke Imaeda², Sou Ryuzaki², Kosei Ueno² (1.Grad. Sch. Chem. Sci. and Eng., Hokkaido Univ., 2.Dept. Chem., Fac. Sci., Hokkaido Univ.)

Keywords:

Metal-insulator-metal (MIM) structure,Near-field spectrum,Dephasing dynamics

The electromagnetic field enhancement effect induced by localized surface plasmon resonance (LSPR) is closely related to the plasmon dephasing time. Metal-insulator-metal (MIM) structures are known for their strong optical absorption and high electromagnetic field enhancement; however, their near-field spectral properties and dephasing dynamics remain insufficiently understood. In this study, we investigated the near-field spectral characteristics and dephasing dynamics of Au nanoperiodic structures fabricated on Al₂O₃/ Au substrates through experimental measurements and electromagnetic simulations.