[20p-C304-1~14] 4.1 Plasmonics and Nanophotonics

▲ [20p-C304-11] Nonlinear Optical Response Analysis of Metallic Nanostructures - A Relationship between Electron Spill-out and 3rd-order Optical Nonlinearity-

〇Takashi Takeuchi¹、Kazuhiro Yabana²、Yuki Takeuchi^1,3,4、Takuo Tanaka^1,5,6 (1.RIKEN Cluster for Pioneering Research、2.Cent. for Comp. Sci., Univ. of Tsukuba、3.Grad. Sch. of Nat. Sci. and Tech., Okayama Univ.、4.JSPS Research Fellow、5.RIKEN Center for Advanced Photonics、6.Institute of Post-LED Photonics, Tokushima Univ.)

キーワード：metallic nanostructures, nonlinear optics, electron spill-out

Metallic nanostructures have attracted attention in the field of not only linear but also nonlinear optics. Very recently, it has been theoretically clarified that the electron spill-out on the surface of the nanostructures, with a sub-nm spatial scale, significantly contributes to the nonlinear optical responses. However, those previous studies have been limited to the systems that are either a 2D thin film or considerably small 3D nanostructure with a few nm size. Therefore, in our talk, we will clarify the nonlinear optical responses induced by the electron spill-outs that come from 5 to 25 nm of metallic nanostructures.