[15p-PA1-1~22] 3.11 Nanoscale optical science and near-field optics

[15p-PA1-12] Construction of space-dividing metasurface in mid infrared wavelength

〇(M2)Kazuki Wada¹, Yoshiaki Nishijima^1,2, Yasutaka Matsuo³ (1.Yokohama National Univ., 2.PRESTO-JST, 3.Hokkaido Univ.)

Keywords:

Plasmonics,Nanophotonics

Toward realizing multi-component simultaneous detection infrared gas sensors, there is a strong demand for constructing wavelength-space-division metasurface devices that can focus arbitrary wavelengths onto arbitrary spatial regions. This research realizes a metamaterial lens capable of focusing different wavelengths to different focal positions by introducing a metamaterial lens structure into the high-efficiency photothermal conversion properties of a MIM (metal-insulator-metal) structure (Au-SiO₂-Au nanostructure) metasurface. This presentation reports on analysis using the Finite Difference Time Domain (FDTD) method, fabrication using semiconductor microfabrication technology, and evaluation.