[9a-N102-1~10] CS.4 Code-sharing session of 3.8&3.11

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9a-N102-8] Tunable Plasmonic Metasurface Absorber based on Surface Lattice Resonance-coupled q-BIC mode

〇Daiki Kawasaki¹, Takuo Tanaka¹ (1.RIKEN)

Keywords:

Metasurface,Plasmonics,Sensor

Metallic and dielectric metasurfaces are useful for highly sensitive label-free molecular sensing, but there is a trade-off between electric field enhancement and spectral linewidth, which determine sensor sensitivity. In this study, we propose a plasmonic metasurface absorber that achieves both strong field enhancement and narrow linewidth, with tunable wavelength coverage across the entire near-infrared region, by coupling surface lattice resonance (SLR) and a parametric quasi-bound state in the continuum (quasi-BIC) mode. In this presentation, we report the absorption characteristics of this metasurface based on experimental, numerical, and theoretical analyses.