[23p-11F-1~17] 3.11 Nanoscale optical science and near-field optics (formerly 3.12)

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[23p-11F-2] Phase Relaxation Dynamics in Exciton-Plasmon Strong Coupling Systems and Their Near-Field Spectroscopic Properties

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

Keywords:

Exciton-plasmon strong coupling system,Interferometric pump-probe technique,Phase relaxation dynamics

Localized surface plasmon resonance provides a high electromagnetic field enhancement effect, but has the disadvantage of a short phase relaxation time. To solve this problem, we are attempting to control the phase relaxation time by utilizing the strong coupling between excitons and plasmons. The exciton used so far is detuned from the central wavelength of the femtosecond laser, which makes quantitative analysis of the phase relaxation time difficult. In this study, we constructed a strong coupling system with excitons whose absorption wavelength is located around 800 nm and investigated its spectral properties and dynamics.