[22p-P01-1~18] 3.12 Nanoscale optical science and near-field optics

[22p-P01-8] Optical Properties of Plasmon-Exciton Strong Coupling Studied by Near-Filed Optical

〇Seiju Hasegawa¹, Kohei Imura¹ (1.Waseda Univ.)

Keywords:plasmon, strong coupling, near-field

In this study, we performed optical measurements on hybrids consist of plasmons excited in gold nanorods and excitons in organic dye aggregates. An aperture near-field optical microscope was used for the transmission and photoluminescence measurements. In the near-field transmission measurements, we observed the transmission light enhancement on the nanorods near exciton resonance energy and revealed that the hybrids were in strong coupling regime. In the near-field photoluminescence measurements, we observed the strong photoluminescence near the gold nanorods and revealed that the observed strong photoluminescence was originated from new electronic states due to the strong coupling.