[21p-224A-1~13] 3.12 Nanoscale optical science and near-field optics

△ [21p-224A-13] Localized multipolar spoof surface plasmon mode of metal single hole

〇(M2)Tomoya Okamoto¹, Yuta Mishiro¹, Shigeki Nashima¹, Takashi Kondo², Seiji Kamba², Tetsuhito Suzuki³, Yuichi Ogawa³ (1.Osaka City Univ., 2.Murata Manufacturing, Co. Ltd., 3.Kyoto Univ.)

Keywords:single metal hole, localized multipole surface plasmon, metal mesh device

We have investigated dip structures around anomalous terahertz (THz) transmission spectra of metal mesh devices (MMDs). While we have already known the localized multipolar spoof surface plasmon mode that is localized in each hole of MMDs, not depends on periodically arranged holes, we have never observed dip structures of single metal hole. Then we investigated multipolar plasmon mode of single metal hole.