Strong coupling and catenary field enhancement in the hybrid plasmonic metamaterial cavity and TMDC monolayers
作者机构：School of Engineering and TechnologyUniversity of New South Wales at CanberraNorthcott DriveCanberra ACT 2610Australia
出 版 物：《Opto-Electronic Advances》 (光电进展（英文）)
年 卷 期：2024年第7卷第5期
页 面：20-32页
核心收录：
学科分类：07[理学] 070204[理学-等离子体物理] 0702[理学-物理学]
基 金：supported by the Australian Research Council (DP200101353)
主 题：catenary-shaped field enhancement strong coupling plasmon exciton Rabi splitting
摘 要：Strong coupling between resonantly matched surface plasmons of metals and excitons of quantum emitters results in the formation of new plasmon-exciton hybridized energy *** plasmon-exciton strong coupling,plasmonic nanocavities play a significant role due to their ability to confine light in an ultrasmall ***,two-dimensional transition metal dichalcogenides(TMDCs) have a significant exciton binding energy and remain stable at ambient conditions,making them an excellent alternative for investigating light-matter *** a result,strong plasmon-exciton coupling has been reported by introducing a single metallic ***,single nanoparticles have lower spatial confinement of electromagnetic fields and limited tunability to match the excitonic ***,we introduce the concept of catenary-shaped optical fields induced by plasmonic metamaterial cavities to scale the strength of plasmon-exciton *** demonstrated plasmon modes of metallic metamaterial cavities offer high confinement and tunability and can match with the excitons of TMDCs to exhibit a strong coupling regime by tuning either the size of the cavity gap or *** calculated Rabi splitting of Au-MoSe_2 and Au-WSe_2 heterostructures strongly depends on the catenary-like field enhancement induced by the Au cavity,resulting in room-temperature Rabi splitting ranging between 77.86 and 320 me *** plasmonic metamaterial cavities can pave the way for manipulating excitons in TMDCs and operating active nanophotonic devices at ambient temperature.
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