講演情報
[10p-E201-6]Hyperbolic Plasmon Polaritons and Localized Resonances in MoOCl2
〇(P)Yaolong Li1, Xu Shi1, Yasutaka Matsuo1, Hiroaki Misawa1,2 (1.Hokkaido Univ., 2.Okayama Univ.)
キーワード：
photoemission electron microscopy、hyperbolic polaritons、vdW material
Femtosecond time-resolved photoemission electron microscopy (TR-PEEM) has broad applications in nanophotonics and surface physics due to its nano-femto spatiotemporal resolution. The applications of PEEM in nanophotonics started from surface plasmon polaritons/resonances (SPPs/SPRs) supported by metals, about twenty years ago, which have experienced successful developments. However, previous PEEM studies have mainly focused on noble metals, limiting the applications to a broader family of materials and modes in nanophotonics. Therefore, it is necessary to expand the scope of nanophotonic research based on PEEM. In this talk, I will present our recent work on imaging optical near-field modes of van der Waals (vdW) materials using PEEM. This talk will focus on imaging hyperbolic plasmon polaritons and hyperbolic localized plasmons supported by a novel vdW material, MoOCl2. These studies demonstrate that PEEM has broad prospects in the investigation of near-field optical modes beyond conventional metals.